Abstract

We report a diode-pumped continuous wave (cw) orthogonally polarized dual-wavelength laser at 1339 and 1341 nm with a single b-cut Nd:YAlO3 (Nd:YAP) crystal. By adjusting the tilt angle of the uncoated glass plate inserted in the laser cavity, we can control the cavity losses of two polarized directions. The output wavelengths are 1339 nm in a-axis polarization and 1341 nm in c-axis polarization, respectively, which are orthogonal to each other. At an incident pump power of 17.3 W, the cw output power obtained at 1339 and 1341 nm is 1.6 and 2.3 W, respectively. Furthermore, intracavity sum-frequency mixing at 1339 and 1341 nm was then realized in a KTiOPO4 (KTP) crystal to reach the red range. To our knowledge, this is the first work realizing an orthogonally polarized dual-wavelength Nd:YAP laser based on the F43/24I13/2 transition. Such a dual-wavelength laser would be especially valuable as a compact laser source to generate terahertz emission because the frequency difference between 1339 and 1341 nm is about 0.9 THz.

© 2014 Optical Society of America

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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  29. R. Zhou, E. B. Li, B. G. Zhang, X. Ding, Z. Q. Cai, W. Q. Wen, P. Wang, and J. Q. Yao, “Simultaneous dual-wavelength CW operation using 4F3/2-4I13/2 transitions in Nd:YVO4 crystal,” Opt. Commun. 260, 641–644 (2006).
    [CrossRef]
  30. J. L. He, J. Du, J. Sun, S. Liu, Y. X. Fan, H. T. Wang, L. H. Zhang, and Y. Hang, “High efficiency single- and dual-wavelength Nd:GdVO4 lasers pumped by a fiber-coupled diode,” Appl. Phys. B 79, 301–304 (2004).
    [CrossRef]
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    [CrossRef]
  32. T. Y. Fan and R. L. Byer, “Diode laser-pumped solid-state lasers,” IEEE J. Quantum Electron. 24, 895–912 (1988).
    [CrossRef]
  33. K. Lünstedt, N. Pavel, K. Petermann, and G. Huber, “Continuous-wave simultaneous dual-wavelength operation at 912 and 1063 nm in Nd:GdVO4,” Appl. Phys. B 86, 65–70 (2007).
    [CrossRef]
  34. M. Born and E. Wolf, Principles of Optics: Electromagnetic Theory of Propagation, Interference and Diffraction of Light, 7th ed. (Cambridge University, 1999).
  35. H. Y. Zhu, G. Zhang, C. H. Huang, Y. Wei, L. X. Huang, and Z. Q. Chen, “8.1 W/670.7  nm and 5.1 W/669.6  nm cw red light outputs by intracavity frequency doubling of a Nd:YAP laser with LBO,” Appl. Phys. B 91, 433–436 (2008).
    [CrossRef]

2012 (2)

2011 (1)

J. B. Baxter and G. W. Guglietta, “Terahertz spectroscopy,” Anal. Chem. 83, 4342–4368 (2011).
[CrossRef]

2010 (4)

C. B. Reid, E. Pickwell-MacPherson, J. G. Laufer, A. P. Gibson, J. C. Hebden, and V. P. Wallace, “Accuracy and resolution of THz reflection spectroscopy for medical imaging,” Phys. Med. Biol. 55, 4825–4838 (2010).
[CrossRef]

S. L. Zhang, Y. D. Tan, and Y. Li, “Orthogonally polarized dual frequency lasers and applications in self-sensing metrology,” Meas. Sci. Technol. 21, 054016 (2010).
[CrossRef]

B. M. Walsh, “Dual wavelength lasers,” Laser Phys. 20, 622–634 (2010).
[CrossRef]

N. Pavel, “Simultaneous dual-wavelength emission at 0.90 and 1.06  μm in Nd-doped laser crystals,” Laser Phys. 20, 215–221 (2010).
[CrossRef]

2009 (2)

Y. Wei, G. Zhang, C. H. Huang, H. Y. Zhu, L. X. Huang, X. J. Ou-Yang, and G. F. Wang, “A single wavelength 1339  nm Nd: YAP pulsed laser,” Opt. Commun. 282, 4397–4400 (2009).
[CrossRef]

B. Wu, P. P. Jiang, D. Z. Yang, T. Chen, J. Kong, and Y. H. Shen, “Compact dual-wavelength Nd:GdVO4 laser working at 1063 and 1065  nm,” Opt. Express 17, 6004–6009 (2009).
[CrossRef]

2008 (1)

H. Y. Zhu, G. Zhang, C. H. Huang, Y. Wei, L. X. Huang, and Z. Q. Chen, “8.1 W/670.7  nm and 5.1 W/669.6  nm cw red light outputs by intracavity frequency doubling of a Nd:YAP laser with LBO,” Appl. Phys. B 91, 433–436 (2008).
[CrossRef]

2007 (4)

K. Lünstedt, N. Pavel, K. Petermann, and G. Huber, “Continuous-wave simultaneous dual-wavelength operation at 912 and 1063 nm in Nd:GdVO4,” Appl. Phys. B 86, 65–70 (2007).
[CrossRef]

A. Li, H. Zhu, G. Zhang, C. Huang, Y. Wei, L. Huang, and Z. Chen, “Diode side-pumped 1.3414  μm Nd:YAP laser in Q-switched mode,” Appl. Opt. 46, 8002–8006 (2007).
[CrossRef]

L. G. Fei and S. L. Zhang, “The discovery of nanometer fringes in laser self-mixing interference,” Opt. Commun. 273, 226–230 (2007).
[CrossRef]

H. Zhu, C. Huang, G. Zhang, Y. Wei, L. Huang, J. Chen, and Z. Chen, “High-power CW diode-side-pumped 1341  nm Nd:YAP laser,” Opt. Commun. 270, 296–300 (2007).
[CrossRef]

2006 (3)

Y. Y. Lin, S. Y. Chen, A. C. Chiang, R. Y. Tu, and Y. C. Huang, “Single-longitudinal-mode, tunable dual wavelength, CW Nd:YVO4 laser,” Opt. Express 14, 5329–5334 (2006).
[CrossRef]

Y. Lu, B. G. Zhang, E. B. Li, D. G. Xu, R. Zhou, X. Zhao, F. Ji, T. L. Zhang, P. Wang, and J. Q. Yao, “High power simultaneous dual-wavelength emission of an end-pumped Nd:YAG laser using the quasi-three-level and the four-level transition,” Opt. Commun. 262, 241–245 (2006).
[CrossRef]

R. Zhou, E. B. Li, B. G. Zhang, X. Ding, Z. Q. Cai, W. Q. Wen, P. Wang, and J. Q. Yao, “Simultaneous dual-wavelength CW operation using 4F3/2-4I13/2 transitions in Nd:YVO4 crystal,” Opt. Commun. 260, 641–644 (2006).
[CrossRef]

2005 (2)

E. Herault, F. Balembois, and P. Georges, “491  nm generation by sum-frequency mixing of diode pumped neodymium lasers,” Opt. Express 13, 5653–5661 (2005).
[CrossRef]

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications—explosives, weapons and drugs,” Semicond. Sci. Technol. 20, S266–S280 (2005).
[CrossRef]

2004 (1)

J. L. He, J. Du, J. Sun, S. Liu, Y. X. Fan, H. T. Wang, L. H. Zhang, and Y. Hang, “High efficiency single- and dual-wavelength Nd:GdVO4 lasers pumped by a fiber-coupled diode,” Appl. Phys. B 79, 301–304 (2004).
[CrossRef]

2003 (1)

Y. Ding, S. Zhang, Y. Li, J. Zhu, W. Du, and R. Suo, “Displacement sensors based on feedback effect of orthogonally polarized lights of frequency-split HeNe lasers,” Opt. Eng. 42, 2225–2228 (2003).
[CrossRef]

2002 (1)

2000 (1)

Y. F. Chen, “cw dual-wavelength operation of a diode-end-pumped Nd:YVO4 laser,” Appl. Phys. B 70, 475–478 (2000).
[CrossRef]

1992 (1)

1991 (2)

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Simultaneous multiple wavelength laser action in various neodymium host crystals,” IEEE J. Quantum Electron. 27, 2315–2318 (1991).
[CrossRef]

A. E. Siegman, M. W. Sasnett, and T. F. Johnston, “Choice of clip levels for beam width measurements using knife-edge techniques,” IEEE J. Quantum Electron. 27, 1098–1104 (1991).
[CrossRef]

1990 (2)

S. Zhang, M. Wu, and G. Jin, “Birefringent tuning double frequency He–Ne laser,” Appl. Opt. 29, 1265–1267 (1990).
[CrossRef]

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Comparison of simultaneous multiple wavelength lasing in various neodymium host crystals at transitions from 4F3/2-4I11/2 and 4F3/2-4I13/2,” Appl. Phys. Lett. 56, 1937–1938 (1990).
[CrossRef]

1989 (1)

H. Y. Shen, T. Q. Lian, R. R. Zeng, Y. P. Zhou, and G. F. Yu, “Measurement of the stimulated emission cross section for the 4F3/2-4I13/2 transition of Nd3+ in YAlO3 crystal,” IEEE J. Quantum Electron. 25, 144–146 (1989).
[CrossRef]

1988 (2)

T. Y. Fan and R. L. Byer, “Diode laser-pumped solid-state lasers,” IEEE J. Quantum Electron. 24, 895–912 (1988).
[CrossRef]

S. Zhang and D. Li, “Using beat frequency lasers to measure micro-displacement and gravity: a discussion,” Appl. Opt. 27, 20–21 (1988).
[CrossRef]

1971 (2)

M. J. Weber and T. E. Varitimos, “Optical spectra and intensities of Nd3+ in YAlO3,” J. Appl. Phys. 42, 4996–5005 (1971).
[CrossRef]

G. A. Massey and J. M. Yarborough, “High average power operation and nonlinear optical generation with the Nd:YAlO3 laser,” Appl. Phys. Lett. 18, 576–579 (1971).
[CrossRef]

1970 (1)

G. A. Massey, “Criterion for selection of cw laser host materials to increase available power in the fundamental mode, “Appl. Phys. Lett. 17, 213–215 (1970).
[CrossRef]

Balembois, F.

Barat, R.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications—explosives, weapons and drugs,” Semicond. Sci. Technol. 20, S266–S280 (2005).
[CrossRef]

Baxter, J. B.

J. B. Baxter and G. W. Guglietta, “Terahertz spectroscopy,” Anal. Chem. 83, 4342–4368 (2011).
[CrossRef]

Born, M.

M. Born and E. Wolf, Principles of Optics: Electromagnetic Theory of Propagation, Interference and Diffraction of Light, 7th ed. (Cambridge University, 1999).

Byer, R. L.

T. Y. Fan and R. L. Byer, “Diode laser-pumped solid-state lasers,” IEEE J. Quantum Electron. 24, 895–912 (1988).
[CrossRef]

Cai, Z. Q.

R. Zhou, E. B. Li, B. G. Zhang, X. Ding, Z. Q. Cai, W. Q. Wen, P. Wang, and J. Q. Yao, “Simultaneous dual-wavelength CW operation using 4F3/2-4I13/2 transitions in Nd:YVO4 crystal,” Opt. Commun. 260, 641–644 (2006).
[CrossRef]

Chen, J.

H. Zhu, C. Huang, G. Zhang, Y. Wei, L. Huang, J. Chen, and Z. Chen, “High-power CW diode-side-pumped 1341  nm Nd:YAP laser,” Opt. Commun. 270, 296–300 (2007).
[CrossRef]

Chen, S. Y.

Chen, T.

Chen, Y. F.

Chen, Z.

H. Zhu, C. Huang, G. Zhang, Y. Wei, L. Huang, J. Chen, and Z. Chen, “High-power CW diode-side-pumped 1341  nm Nd:YAP laser,” Opt. Commun. 270, 296–300 (2007).
[CrossRef]

A. Li, H. Zhu, G. Zhang, C. Huang, Y. Wei, L. Huang, and Z. Chen, “Diode side-pumped 1.3414  μm Nd:YAP laser in Q-switched mode,” Appl. Opt. 46, 8002–8006 (2007).
[CrossRef]

Chen, Z. Q.

H. Y. Zhu, G. Zhang, C. H. Huang, Y. Wei, L. X. Huang, and Z. Q. Chen, “8.1 W/670.7  nm and 5.1 W/669.6  nm cw red light outputs by intracavity frequency doubling of a Nd:YAP laser with LBO,” Appl. Phys. B 91, 433–436 (2008).
[CrossRef]

Chiang, A. C.

Cho, C. Y.

Ding, X.

R. Zhou, E. B. Li, B. G. Zhang, X. Ding, Z. Q. Cai, W. Q. Wen, P. Wang, and J. Q. Yao, “Simultaneous dual-wavelength CW operation using 4F3/2-4I13/2 transitions in Nd:YVO4 crystal,” Opt. Commun. 260, 641–644 (2006).
[CrossRef]

Ding, Y.

Y. Ding, S. Zhang, Y. Li, J. Zhu, W. Du, and R. Suo, “Displacement sensors based on feedback effect of orthogonally polarized lights of frequency-split HeNe lasers,” Opt. Eng. 42, 2225–2228 (2003).
[CrossRef]

Ding, Y. J.

Du, J.

J. L. He, J. Du, J. Sun, S. Liu, Y. X. Fan, H. T. Wang, L. H. Zhang, and Y. Hang, “High efficiency single- and dual-wavelength Nd:GdVO4 lasers pumped by a fiber-coupled diode,” Appl. Phys. B 79, 301–304 (2004).
[CrossRef]

Du, W.

Y. Ding, S. Zhang, Y. Li, J. Zhu, W. Du, and R. Suo, “Displacement sensors based on feedback effect of orthogonally polarized lights of frequency-split HeNe lasers,” Opt. Eng. 42, 2225–2228 (2003).
[CrossRef]

Fan, T. Y.

T. Y. Fan and R. L. Byer, “Diode laser-pumped solid-state lasers,” IEEE J. Quantum Electron. 24, 895–912 (1988).
[CrossRef]

Fan, Y. X.

J. L. He, J. Du, J. Sun, S. Liu, Y. X. Fan, H. T. Wang, L. H. Zhang, and Y. Hang, “High efficiency single- and dual-wavelength Nd:GdVO4 lasers pumped by a fiber-coupled diode,” Appl. Phys. B 79, 301–304 (2004).
[CrossRef]

Federici, J. F.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications—explosives, weapons and drugs,” Semicond. Sci. Technol. 20, S266–S280 (2005).
[CrossRef]

Fei, L. G.

L. G. Fei and S. L. Zhang, “The discovery of nanometer fringes in laser self-mixing interference,” Opt. Commun. 273, 226–230 (2007).
[CrossRef]

Feng, T.

Fernelius, N.

Fu, X. H.

Gary, D.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications—explosives, weapons and drugs,” Semicond. Sci. Technol. 20, S266–S280 (2005).
[CrossRef]

Georges, P.

Gibson, A. P.

C. B. Reid, E. Pickwell-MacPherson, J. G. Laufer, A. P. Gibson, J. C. Hebden, and V. P. Wallace, “Accuracy and resolution of THz reflection spectroscopy for medical imaging,” Phys. Med. Biol. 55, 4825–4838 (2010).
[CrossRef]

Guglietta, G. W.

J. B. Baxter and G. W. Guglietta, “Terahertz spectroscopy,” Anal. Chem. 83, 4342–4368 (2011).
[CrossRef]

Hang, Y.

J. L. He, J. Du, J. Sun, S. Liu, Y. X. Fan, H. T. Wang, L. H. Zhang, and Y. Hang, “High efficiency single- and dual-wavelength Nd:GdVO4 lasers pumped by a fiber-coupled diode,” Appl. Phys. B 79, 301–304 (2004).
[CrossRef]

He, J. L.

J. L. He, J. Du, J. Sun, S. Liu, Y. X. Fan, H. T. Wang, L. H. Zhang, and Y. Hang, “High efficiency single- and dual-wavelength Nd:GdVO4 lasers pumped by a fiber-coupled diode,” Appl. Phys. B 79, 301–304 (2004).
[CrossRef]

Hebden, J. C.

C. B. Reid, E. Pickwell-MacPherson, J. G. Laufer, A. P. Gibson, J. C. Hebden, and V. P. Wallace, “Accuracy and resolution of THz reflection spectroscopy for medical imaging,” Phys. Med. Biol. 55, 4825–4838 (2010).
[CrossRef]

Herault, E.

Huang, C.

H. Zhu, C. Huang, G. Zhang, Y. Wei, L. Huang, J. Chen, and Z. Chen, “High-power CW diode-side-pumped 1341  nm Nd:YAP laser,” Opt. Commun. 270, 296–300 (2007).
[CrossRef]

A. Li, H. Zhu, G. Zhang, C. Huang, Y. Wei, L. Huang, and Z. Chen, “Diode side-pumped 1.3414  μm Nd:YAP laser in Q-switched mode,” Appl. Opt. 46, 8002–8006 (2007).
[CrossRef]

Huang, C. H.

Y. Wei, G. Zhang, C. H. Huang, H. Y. Zhu, L. X. Huang, X. J. Ou-Yang, and G. F. Wang, “A single wavelength 1339  nm Nd: YAP pulsed laser,” Opt. Commun. 282, 4397–4400 (2009).
[CrossRef]

H. Y. Zhu, G. Zhang, C. H. Huang, Y. Wei, L. X. Huang, and Z. Q. Chen, “8.1 W/670.7  nm and 5.1 W/669.6  nm cw red light outputs by intracavity frequency doubling of a Nd:YAP laser with LBO,” Appl. Phys. B 91, 433–436 (2008).
[CrossRef]

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Simultaneous multiple wavelength laser action in various neodymium host crystals,” IEEE J. Quantum Electron. 27, 2315–2318 (1991).
[CrossRef]

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Comparison of simultaneous multiple wavelength lasing in various neodymium host crystals at transitions from 4F3/2-4I11/2 and 4F3/2-4I13/2,” Appl. Phys. Lett. 56, 1937–1938 (1990).
[CrossRef]

Huang, F.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications—explosives, weapons and drugs,” Semicond. Sci. Technol. 20, S266–S280 (2005).
[CrossRef]

Huang, L.

H. Zhu, C. Huang, G. Zhang, Y. Wei, L. Huang, J. Chen, and Z. Chen, “High-power CW diode-side-pumped 1341  nm Nd:YAP laser,” Opt. Commun. 270, 296–300 (2007).
[CrossRef]

A. Li, H. Zhu, G. Zhang, C. Huang, Y. Wei, L. Huang, and Z. Chen, “Diode side-pumped 1.3414  μm Nd:YAP laser in Q-switched mode,” Appl. Opt. 46, 8002–8006 (2007).
[CrossRef]

Huang, L. X.

Y. Wei, G. Zhang, C. H. Huang, H. Y. Zhu, L. X. Huang, X. J. Ou-Yang, and G. F. Wang, “A single wavelength 1339  nm Nd: YAP pulsed laser,” Opt. Commun. 282, 4397–4400 (2009).
[CrossRef]

H. Y. Zhu, G. Zhang, C. H. Huang, Y. Wei, L. X. Huang, and Z. Q. Chen, “8.1 W/670.7  nm and 5.1 W/669.6  nm cw red light outputs by intracavity frequency doubling of a Nd:YAP laser with LBO,” Appl. Phys. B 91, 433–436 (2008).
[CrossRef]

Huang, Y. C.

Huang, Y. J.

Huang, Y. P.

Huber, G.

K. Lünstedt, N. Pavel, K. Petermann, and G. Huber, “Continuous-wave simultaneous dual-wavelength operation at 912 and 1063 nm in Nd:GdVO4,” Appl. Phys. B 86, 65–70 (2007).
[CrossRef]

Ji, F.

Y. Lu, B. G. Zhang, E. B. Li, D. G. Xu, R. Zhou, X. Zhao, F. Ji, T. L. Zhang, P. Wang, and J. Q. Yao, “High power simultaneous dual-wavelength emission of an end-pumped Nd:YAG laser using the quasi-three-level and the four-level transition,” Opt. Commun. 262, 241–245 (2006).
[CrossRef]

Jiang, P. P.

Jin, G.

Johnston, T. F.

A. E. Siegman, M. W. Sasnett, and T. F. Johnston, “Choice of clip levels for beam width measurements using knife-edge techniques,” IEEE J. Quantum Electron. 27, 1098–1104 (1991).
[CrossRef]

Kong, J.

Laufer, J. G.

C. B. Reid, E. Pickwell-MacPherson, J. G. Laufer, A. P. Gibson, J. C. Hebden, and V. P. Wallace, “Accuracy and resolution of THz reflection spectroscopy for medical imaging,” Phys. Med. Biol. 55, 4825–4838 (2010).
[CrossRef]

Li, A.

Li, D.

Li, E. B.

Y. Lu, B. G. Zhang, E. B. Li, D. G. Xu, R. Zhou, X. Zhao, F. Ji, T. L. Zhang, P. Wang, and J. Q. Yao, “High power simultaneous dual-wavelength emission of an end-pumped Nd:YAG laser using the quasi-three-level and the four-level transition,” Opt. Commun. 262, 241–245 (2006).
[CrossRef]

R. Zhou, E. B. Li, B. G. Zhang, X. Ding, Z. Q. Cai, W. Q. Wen, P. Wang, and J. Q. Yao, “Simultaneous dual-wavelength CW operation using 4F3/2-4I13/2 transitions in Nd:YVO4 crystal,” Opt. Commun. 260, 641–644 (2006).
[CrossRef]

Li, S. T.

Li, Y.

S. L. Zhang, Y. D. Tan, and Y. Li, “Orthogonally polarized dual frequency lasers and applications in self-sensing metrology,” Meas. Sci. Technol. 21, 054016 (2010).
[CrossRef]

Y. Ding, S. Zhang, Y. Li, J. Zhu, W. Du, and R. Suo, “Displacement sensors based on feedback effect of orthogonally polarized lights of frequency-split HeNe lasers,” Opt. Eng. 42, 2225–2228 (2003).
[CrossRef]

Lian, T. Q.

H. Y. Shen, T. Q. Lian, R. R. Zeng, Y. P. Zhou, and G. F. Yu, “Measurement of the stimulated emission cross section for the 4F3/2-4I13/2 transition of Nd3+ in YAlO3 crystal,” IEEE J. Quantum Electron. 25, 144–146 (1989).
[CrossRef]

Lin, Y. Y.

Liu, S.

J. L. He, J. Du, J. Sun, S. Liu, Y. X. Fan, H. T. Wang, L. H. Zhang, and Y. Hang, “High efficiency single- and dual-wavelength Nd:GdVO4 lasers pumped by a fiber-coupled diode,” Appl. Phys. B 79, 301–304 (2004).
[CrossRef]

Lu, Y.

Y. Lu, B. G. Zhang, E. B. Li, D. G. Xu, R. Zhou, X. Zhao, F. Ji, T. L. Zhang, P. Wang, and J. Q. Yao, “High power simultaneous dual-wavelength emission of an end-pumped Nd:YAG laser using the quasi-three-level and the four-level transition,” Opt. Commun. 262, 241–245 (2006).
[CrossRef]

Lü, Y. F.

Lünstedt, K.

K. Lünstedt, N. Pavel, K. Petermann, and G. Huber, “Continuous-wave simultaneous dual-wavelength operation at 912 and 1063 nm in Nd:GdVO4,” Appl. Phys. B 86, 65–70 (2007).
[CrossRef]

Massey, G. A.

G. A. Massey and J. M. Yarborough, “High average power operation and nonlinear optical generation with the Nd:YAlO3 laser,” Appl. Phys. Lett. 18, 576–579 (1971).
[CrossRef]

G. A. Massey, “Criterion for selection of cw laser host materials to increase available power in the fundamental mode, “Appl. Phys. Lett. 17, 213–215 (1970).
[CrossRef]

Oliveira, F.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications—explosives, weapons and drugs,” Semicond. Sci. Technol. 20, S266–S280 (2005).
[CrossRef]

Ou-Yang, X. J.

Y. Wei, G. Zhang, C. H. Huang, H. Y. Zhu, L. X. Huang, X. J. Ou-Yang, and G. F. Wang, “A single wavelength 1339  nm Nd: YAP pulsed laser,” Opt. Commun. 282, 4397–4400 (2009).
[CrossRef]

Pavel, N.

N. Pavel, “Simultaneous dual-wavelength emission at 0.90 and 1.06  μm in Nd-doped laser crystals,” Laser Phys. 20, 215–221 (2010).
[CrossRef]

K. Lünstedt, N. Pavel, K. Petermann, and G. Huber, “Continuous-wave simultaneous dual-wavelength operation at 912 and 1063 nm in Nd:GdVO4,” Appl. Phys. B 86, 65–70 (2007).
[CrossRef]

Petermann, K.

K. Lünstedt, N. Pavel, K. Petermann, and G. Huber, “Continuous-wave simultaneous dual-wavelength operation at 912 and 1063 nm in Nd:GdVO4,” Appl. Phys. B 86, 65–70 (2007).
[CrossRef]

Pickwell-MacPherson, E.

C. B. Reid, E. Pickwell-MacPherson, J. G. Laufer, A. P. Gibson, J. C. Hebden, and V. P. Wallace, “Accuracy and resolution of THz reflection spectroscopy for medical imaging,” Phys. Med. Biol. 55, 4825–4838 (2010).
[CrossRef]

Reid, C. B.

C. B. Reid, E. Pickwell-MacPherson, J. G. Laufer, A. P. Gibson, J. C. Hebden, and V. P. Wallace, “Accuracy and resolution of THz reflection spectroscopy for medical imaging,” Phys. Med. Biol. 55, 4825–4838 (2010).
[CrossRef]

Sasnett, M. W.

A. E. Siegman, M. W. Sasnett, and T. F. Johnston, “Choice of clip levels for beam width measurements using knife-edge techniques,” IEEE J. Quantum Electron. 27, 1098–1104 (1991).
[CrossRef]

Schulkin, B.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications—explosives, weapons and drugs,” Semicond. Sci. Technol. 20, S266–S280 (2005).
[CrossRef]

Shen, H. Y.

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Simultaneous multiple wavelength laser action in various neodymium host crystals,” IEEE J. Quantum Electron. 27, 2315–2318 (1991).
[CrossRef]

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Comparison of simultaneous multiple wavelength lasing in various neodymium host crystals at transitions from 4F3/2-4I11/2 and 4F3/2-4I13/2,” Appl. Phys. Lett. 56, 1937–1938 (1990).
[CrossRef]

H. Y. Shen, T. Q. Lian, R. R. Zeng, Y. P. Zhou, and G. F. Yu, “Measurement of the stimulated emission cross section for the 4F3/2-4I13/2 transition of Nd3+ in YAlO3 crystal,” IEEE J. Quantum Electron. 25, 144–146 (1989).
[CrossRef]

Shen, Y. H.

Shi, W.

Siegman, A. E.

A. E. Siegman, M. W. Sasnett, and T. F. Johnston, “Choice of clip levels for beam width measurements using knife-edge techniques,” IEEE J. Quantum Electron. 27, 1098–1104 (1991).
[CrossRef]

Sun, J.

J. L. He, J. Du, J. Sun, S. Liu, Y. X. Fan, H. T. Wang, L. H. Zhang, and Y. Hang, “High efficiency single- and dual-wavelength Nd:GdVO4 lasers pumped by a fiber-coupled diode,” Appl. Phys. B 79, 301–304 (2004).
[CrossRef]

Suo, R.

Y. Ding, S. Zhang, Y. Li, J. Zhu, W. Du, and R. Suo, “Displacement sensors based on feedback effect of orthogonally polarized lights of frequency-split HeNe lasers,” Opt. Eng. 42, 2225–2228 (2003).
[CrossRef]

Tan, Y. D.

S. L. Zhang, Y. D. Tan, and Y. Li, “Orthogonally polarized dual frequency lasers and applications in self-sensing metrology,” Meas. Sci. Technol. 21, 054016 (2010).
[CrossRef]

Tu, R. Y.

Varitimos, T. E.

M. J. Weber and T. E. Varitimos, “Optical spectra and intensities of Nd3+ in YAlO3,” J. Appl. Phys. 42, 4996–5005 (1971).
[CrossRef]

Vodopyanov, K.

Wallace, V. P.

C. B. Reid, E. Pickwell-MacPherson, J. G. Laufer, A. P. Gibson, J. C. Hebden, and V. P. Wallace, “Accuracy and resolution of THz reflection spectroscopy for medical imaging,” Phys. Med. Biol. 55, 4825–4838 (2010).
[CrossRef]

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[CrossRef]

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Y. Wei, G. Zhang, C. H. Huang, H. Y. Zhu, L. X. Huang, X. J. Ou-Yang, and G. F. Wang, “A single wavelength 1339  nm Nd: YAP pulsed laser,” Opt. Commun. 282, 4397–4400 (2009).
[CrossRef]

Wang, H. T.

J. L. He, J. Du, J. Sun, S. Liu, Y. X. Fan, H. T. Wang, L. H. Zhang, and Y. Hang, “High efficiency single- and dual-wavelength Nd:GdVO4 lasers pumped by a fiber-coupled diode,” Appl. Phys. B 79, 301–304 (2004).
[CrossRef]

Wang, P.

Y. Lu, B. G. Zhang, E. B. Li, D. G. Xu, R. Zhou, X. Zhao, F. Ji, T. L. Zhang, P. Wang, and J. Q. Yao, “High power simultaneous dual-wavelength emission of an end-pumped Nd:YAG laser using the quasi-three-level and the four-level transition,” Opt. Commun. 262, 241–245 (2006).
[CrossRef]

R. Zhou, E. B. Li, B. G. Zhang, X. Ding, Z. Q. Cai, W. Q. Wen, P. Wang, and J. Q. Yao, “Simultaneous dual-wavelength CW operation using 4F3/2-4I13/2 transitions in Nd:YVO4 crystal,” Opt. Commun. 260, 641–644 (2006).
[CrossRef]

Weber, M. J.

M. J. Weber and T. E. Varitimos, “Optical spectra and intensities of Nd3+ in YAlO3,” J. Appl. Phys. 42, 4996–5005 (1971).
[CrossRef]

Wei, Y.

Y. Wei, G. Zhang, C. H. Huang, H. Y. Zhu, L. X. Huang, X. J. Ou-Yang, and G. F. Wang, “A single wavelength 1339  nm Nd: YAP pulsed laser,” Opt. Commun. 282, 4397–4400 (2009).
[CrossRef]

H. Y. Zhu, G. Zhang, C. H. Huang, Y. Wei, L. X. Huang, and Z. Q. Chen, “8.1 W/670.7  nm and 5.1 W/669.6  nm cw red light outputs by intracavity frequency doubling of a Nd:YAP laser with LBO,” Appl. Phys. B 91, 433–436 (2008).
[CrossRef]

A. Li, H. Zhu, G. Zhang, C. Huang, Y. Wei, L. Huang, and Z. Chen, “Diode side-pumped 1.3414  μm Nd:YAP laser in Q-switched mode,” Appl. Opt. 46, 8002–8006 (2007).
[CrossRef]

H. Zhu, C. Huang, G. Zhang, Y. Wei, L. Huang, J. Chen, and Z. Chen, “High-power CW diode-side-pumped 1341  nm Nd:YAP laser,” Opt. Commun. 270, 296–300 (2007).
[CrossRef]

Wen, W. Q.

R. Zhou, E. B. Li, B. G. Zhang, X. Ding, Z. Q. Cai, W. Q. Wen, P. Wang, and J. Q. Yao, “Simultaneous dual-wavelength CW operation using 4F3/2-4I13/2 transitions in Nd:YVO4 crystal,” Opt. Commun. 260, 641–644 (2006).
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M. Born and E. Wolf, Principles of Optics: Electromagnetic Theory of Propagation, Interference and Diffraction of Light, 7th ed. (Cambridge University, 1999).

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Xu, D. G.

Y. Lu, B. G. Zhang, E. B. Li, D. G. Xu, R. Zhou, X. Zhao, F. Ji, T. L. Zhang, P. Wang, and J. Q. Yao, “High power simultaneous dual-wavelength emission of an end-pumped Nd:YAG laser using the quasi-three-level and the four-level transition,” Opt. Commun. 262, 241–245 (2006).
[CrossRef]

Yang, D. Z.

Yao, J. Q.

R. Zhou, E. B. Li, B. G. Zhang, X. Ding, Z. Q. Cai, W. Q. Wen, P. Wang, and J. Q. Yao, “Simultaneous dual-wavelength CW operation using 4F3/2-4I13/2 transitions in Nd:YVO4 crystal,” Opt. Commun. 260, 641–644 (2006).
[CrossRef]

Y. Lu, B. G. Zhang, E. B. Li, D. G. Xu, R. Zhou, X. Zhao, F. Ji, T. L. Zhang, P. Wang, and J. Q. Yao, “High power simultaneous dual-wavelength emission of an end-pumped Nd:YAG laser using the quasi-three-level and the four-level transition,” Opt. Commun. 262, 241–245 (2006).
[CrossRef]

Yarborough, J. M.

G. A. Massey and J. M. Yarborough, “High average power operation and nonlinear optical generation with the Nd:YAlO3 laser,” Appl. Phys. Lett. 18, 576–579 (1971).
[CrossRef]

Ye, Q. J.

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Simultaneous multiple wavelength laser action in various neodymium host crystals,” IEEE J. Quantum Electron. 27, 2315–2318 (1991).
[CrossRef]

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Comparison of simultaneous multiple wavelength lasing in various neodymium host crystals at transitions from 4F3/2-4I11/2 and 4F3/2-4I13/2,” Appl. Phys. Lett. 56, 1937–1938 (1990).
[CrossRef]

Yu, G. F.

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Simultaneous multiple wavelength laser action in various neodymium host crystals,” IEEE J. Quantum Electron. 27, 2315–2318 (1991).
[CrossRef]

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Comparison of simultaneous multiple wavelength lasing in various neodymium host crystals at transitions from 4F3/2-4I11/2 and 4F3/2-4I13/2,” Appl. Phys. Lett. 56, 1937–1938 (1990).
[CrossRef]

H. Y. Shen, T. Q. Lian, R. R. Zeng, Y. P. Zhou, and G. F. Yu, “Measurement of the stimulated emission cross section for the 4F3/2-4I13/2 transition of Nd3+ in YAlO3 crystal,” IEEE J. Quantum Electron. 25, 144–146 (1989).
[CrossRef]

Zeng, R. R.

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Simultaneous multiple wavelength laser action in various neodymium host crystals,” IEEE J. Quantum Electron. 27, 2315–2318 (1991).
[CrossRef]

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Comparison of simultaneous multiple wavelength lasing in various neodymium host crystals at transitions from 4F3/2-4I11/2 and 4F3/2-4I13/2,” Appl. Phys. Lett. 56, 1937–1938 (1990).
[CrossRef]

H. Y. Shen, T. Q. Lian, R. R. Zeng, Y. P. Zhou, and G. F. Yu, “Measurement of the stimulated emission cross section for the 4F3/2-4I13/2 transition of Nd3+ in YAlO3 crystal,” IEEE J. Quantum Electron. 25, 144–146 (1989).
[CrossRef]

Zeng, Z. D.

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Simultaneous multiple wavelength laser action in various neodymium host crystals,” IEEE J. Quantum Electron. 27, 2315–2318 (1991).
[CrossRef]

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Comparison of simultaneous multiple wavelength lasing in various neodymium host crystals at transitions from 4F3/2-4I11/2 and 4F3/2-4I13/2,” Appl. Phys. Lett. 56, 1937–1938 (1990).
[CrossRef]

Zhai, P.

Zhang, B. G.

Y. Lu, B. G. Zhang, E. B. Li, D. G. Xu, R. Zhou, X. Zhao, F. Ji, T. L. Zhang, P. Wang, and J. Q. Yao, “High power simultaneous dual-wavelength emission of an end-pumped Nd:YAG laser using the quasi-three-level and the four-level transition,” Opt. Commun. 262, 241–245 (2006).
[CrossRef]

R. Zhou, E. B. Li, B. G. Zhang, X. Ding, Z. Q. Cai, W. Q. Wen, P. Wang, and J. Q. Yao, “Simultaneous dual-wavelength CW operation using 4F3/2-4I13/2 transitions in Nd:YVO4 crystal,” Opt. Commun. 260, 641–644 (2006).
[CrossRef]

Zhang, G.

Y. Wei, G. Zhang, C. H. Huang, H. Y. Zhu, L. X. Huang, X. J. Ou-Yang, and G. F. Wang, “A single wavelength 1339  nm Nd: YAP pulsed laser,” Opt. Commun. 282, 4397–4400 (2009).
[CrossRef]

H. Y. Zhu, G. Zhang, C. H. Huang, Y. Wei, L. X. Huang, and Z. Q. Chen, “8.1 W/670.7  nm and 5.1 W/669.6  nm cw red light outputs by intracavity frequency doubling of a Nd:YAP laser with LBO,” Appl. Phys. B 91, 433–436 (2008).
[CrossRef]

A. Li, H. Zhu, G. Zhang, C. Huang, Y. Wei, L. Huang, and Z. Chen, “Diode side-pumped 1.3414  μm Nd:YAP laser in Q-switched mode,” Appl. Opt. 46, 8002–8006 (2007).
[CrossRef]

H. Zhu, C. Huang, G. Zhang, Y. Wei, L. Huang, J. Chen, and Z. Chen, “High-power CW diode-side-pumped 1341  nm Nd:YAP laser,” Opt. Commun. 270, 296–300 (2007).
[CrossRef]

Zhang, J.

Zhang, L. H.

J. L. He, J. Du, J. Sun, S. Liu, Y. X. Fan, H. T. Wang, L. H. Zhang, and Y. Hang, “High efficiency single- and dual-wavelength Nd:GdVO4 lasers pumped by a fiber-coupled diode,” Appl. Phys. B 79, 301–304 (2004).
[CrossRef]

Zhang, S.

Zhang, S. L.

S. L. Zhang, Y. D. Tan, and Y. Li, “Orthogonally polarized dual frequency lasers and applications in self-sensing metrology,” Meas. Sci. Technol. 21, 054016 (2010).
[CrossRef]

L. G. Fei and S. L. Zhang, “The discovery of nanometer fringes in laser self-mixing interference,” Opt. Commun. 273, 226–230 (2007).
[CrossRef]

Zhang, T. L.

Y. Lu, B. G. Zhang, E. B. Li, D. G. Xu, R. Zhou, X. Zhao, F. Ji, T. L. Zhang, P. Wang, and J. Q. Yao, “High power simultaneous dual-wavelength emission of an end-pumped Nd:YAG laser using the quasi-three-level and the four-level transition,” Opt. Commun. 262, 241–245 (2006).
[CrossRef]

Zhang, W. J.

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Simultaneous multiple wavelength laser action in various neodymium host crystals,” IEEE J. Quantum Electron. 27, 2315–2318 (1991).
[CrossRef]

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Comparison of simultaneous multiple wavelength lasing in various neodymium host crystals at transitions from 4F3/2-4I11/2 and 4F3/2-4I13/2,” Appl. Phys. Lett. 56, 1937–1938 (1990).
[CrossRef]

Zhao, X.

Y. Lu, B. G. Zhang, E. B. Li, D. G. Xu, R. Zhou, X. Zhao, F. Ji, T. L. Zhang, P. Wang, and J. Q. Yao, “High power simultaneous dual-wavelength emission of an end-pumped Nd:YAG laser using the quasi-three-level and the four-level transition,” Opt. Commun. 262, 241–245 (2006).
[CrossRef]

Zhou, R.

Y. Lu, B. G. Zhang, E. B. Li, D. G. Xu, R. Zhou, X. Zhao, F. Ji, T. L. Zhang, P. Wang, and J. Q. Yao, “High power simultaneous dual-wavelength emission of an end-pumped Nd:YAG laser using the quasi-three-level and the four-level transition,” Opt. Commun. 262, 241–245 (2006).
[CrossRef]

R. Zhou, E. B. Li, B. G. Zhang, X. Ding, Z. Q. Cai, W. Q. Wen, P. Wang, and J. Q. Yao, “Simultaneous dual-wavelength CW operation using 4F3/2-4I13/2 transitions in Nd:YVO4 crystal,” Opt. Commun. 260, 641–644 (2006).
[CrossRef]

Zhou, Y. P.

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Simultaneous multiple wavelength laser action in various neodymium host crystals,” IEEE J. Quantum Electron. 27, 2315–2318 (1991).
[CrossRef]

H. Y. Shen, R. R. Zeng, Y. P. Zhou, G. F. Yu, C. H. Huang, Z. D. Zeng, W. J. Zhang, and Q. J. Ye, “Comparison of simultaneous multiple wavelength lasing in various neodymium host crystals at transitions from 4F3/2-4I11/2 and 4F3/2-4I13/2,” Appl. Phys. Lett. 56, 1937–1938 (1990).
[CrossRef]

H. Y. Shen, T. Q. Lian, R. R. Zeng, Y. P. Zhou, and G. F. Yu, “Measurement of the stimulated emission cross section for the 4F3/2-4I13/2 transition of Nd3+ in YAlO3 crystal,” IEEE J. Quantum Electron. 25, 144–146 (1989).
[CrossRef]

Zhu, H.

H. Zhu, C. Huang, G. Zhang, Y. Wei, L. Huang, J. Chen, and Z. Chen, “High-power CW diode-side-pumped 1341  nm Nd:YAP laser,” Opt. Commun. 270, 296–300 (2007).
[CrossRef]

A. Li, H. Zhu, G. Zhang, C. Huang, Y. Wei, L. Huang, and Z. Chen, “Diode side-pumped 1.3414  μm Nd:YAP laser in Q-switched mode,” Appl. Opt. 46, 8002–8006 (2007).
[CrossRef]

Zhu, H. Y.

Y. Wei, G. Zhang, C. H. Huang, H. Y. Zhu, L. X. Huang, X. J. Ou-Yang, and G. F. Wang, “A single wavelength 1339  nm Nd: YAP pulsed laser,” Opt. Commun. 282, 4397–4400 (2009).
[CrossRef]

H. Y. Zhu, G. Zhang, C. H. Huang, Y. Wei, L. X. Huang, and Z. Q. Chen, “8.1 W/670.7  nm and 5.1 W/669.6  nm cw red light outputs by intracavity frequency doubling of a Nd:YAP laser with LBO,” Appl. Phys. B 91, 433–436 (2008).
[CrossRef]

Zhu, J.

Y. Ding, S. Zhang, Y. Li, J. Zhu, W. Du, and R. Suo, “Displacement sensors based on feedback effect of orthogonally polarized lights of frequency-split HeNe lasers,” Opt. Eng. 42, 2225–2228 (2003).
[CrossRef]

Zimdars, D.

J. F. Federici, B. Schulkin, F. Huang, D. Gary, R. Barat, F. Oliveira, and D. Zimdars, “THz imaging and sensing for security applications—explosives, weapons and drugs,” Semicond. Sci. Technol. 20, S266–S280 (2005).
[CrossRef]

Anal. Chem. (1)

J. B. Baxter and G. W. Guglietta, “Terahertz spectroscopy,” Anal. Chem. 83, 4342–4368 (2011).
[CrossRef]

Appl. Opt. (4)

Appl. Phys. B (4)

H. Y. Zhu, G. Zhang, C. H. Huang, Y. Wei, L. X. Huang, and Z. Q. Chen, “8.1 W/670.7  nm and 5.1 W/669.6  nm cw red light outputs by intracavity frequency doubling of a Nd:YAP laser with LBO,” Appl. Phys. B 91, 433–436 (2008).
[CrossRef]

J. L. He, J. Du, J. Sun, S. Liu, Y. X. Fan, H. T. Wang, L. H. Zhang, and Y. Hang, “High efficiency single- and dual-wavelength Nd:GdVO4 lasers pumped by a fiber-coupled diode,” Appl. Phys. B 79, 301–304 (2004).
[CrossRef]

K. Lünstedt, N. Pavel, K. Petermann, and G. Huber, “Continuous-wave simultaneous dual-wavelength operation at 912 and 1063 nm in Nd:GdVO4,” Appl. Phys. B 86, 65–70 (2007).
[CrossRef]

Y. F. Chen, “cw dual-wavelength operation of a diode-end-pumped Nd:YVO4 laser,” Appl. Phys. B 70, 475–478 (2000).
[CrossRef]

Appl. Phys. Lett. (3)

G. A. Massey and J. M. Yarborough, “High average power operation and nonlinear optical generation with the Nd:YAlO3 laser,” Appl. Phys. Lett. 18, 576–579 (1971).
[CrossRef]

G. A. Massey, “Criterion for selection of cw laser host materials to increase available power in the fundamental mode, “Appl. Phys. Lett. 17, 213–215 (1970).
[CrossRef]

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Figures (8)

Fig. 1.
Fig. 1.

Energy structure of a Nd:YAP crystal.

Fig. 2.
Fig. 2.

Experimental setups for (a) orthogonally polarized dual-wavelength Nd:YAP laser at 1341 and 1339 nm and (b) their sum-frequency mixing.

Fig. 3.
Fig. 3.

Output power versus the incident pump power for the 1341 nm emission. Inset: optical spectrum of the 1341 nm emission at the maximum output power.

Fig. 4.
Fig. 4.

Dependence of the losses for s and p waves on the incident angle for dual-wavelength operation.

Fig. 5.
Fig. 5.

Dependence of the relative output powers at 1339 and 1341 nm on the incident pump power.

Fig. 6.
Fig. 6.

Optical spectrum of dual-wavelength operation at the maximum output power.

Fig. 7.
Fig. 7.

Dependence of the relative dual-wavelength output powers at 1339 and 1341 nm on the incident pump power.

Fig. 8.
Fig. 8.

Dependence of the relative output powers at 670 nm at the maximum pump power and the pump laser thresholds on the tilt angle θ of the glass plate.

Equations (1)

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γ=Pth,2Pth,1=ln(1/R2)+L2ln(1/R1)+L1η1f1σ1η2f2σ21exp(2ωp2/ω12)1exp(2ωp2/ω22),

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