Abstract

A highly efficient and compact Nd:YVO4 laser is proposed. In cw operation, a single-longitudinal-mode output of 95 mW and a multilongitudinal-mode output of 435 mW have been observed at 1.06 μm with a 1-W diode laser. Using a KTP crystal in the short laser cavity, a green output of 105 mW was generated. A Q-switched pulse with a peak power of 230 W and a pulse width of 8 ns was obtained with the intracavity KTP crystal, which was used as both an electro-optic Q switch and a frequency doubler.

© 1995 Optical Society of America

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  1. T. Y. Fan, R. L. Byer, “Diode laser-pumped solid-state lasers,” IEEE J. Quantum Electron. 24, 895–912 (1988).
    [CrossRef]
  2. R. A. Fields, M. Birnbum, C. L. Fincher, “Highly efficient Nd:YVO4 diode-laser end-pumped laser,” Appl. Phys. Lett. 51, 1885–1886 (1987).
    [CrossRef]
  3. T. Taira, A. Mukai, Y. Nozawa, T. Kobayashi, “Single-mode oscillation of laser-diode-pumped Nd:YVO4 microchip lasers,” Opt. Lett. 16, 1955–1957 (1991).
    [CrossRef] [PubMed]
  4. R. Scheps, J. F. Myers, G. Mizell, K. Yates, “Internally folded Nd:YAG and Nd:YVO4 lasers pumped by laser diodes,” IEEE J. Quantum Electron. 30, 2132–2135 (1994).
    [CrossRef]
  5. G. J. Kintz, T. Baer, “Single-frequency operation in solid-state laser materials with short absorption depths,” IEEE J. Quantum Electron. 26, 1457–1459 (1990).
    [CrossRef]
  6. T. Sasaki, T. Kojima, A. Yokotani, O. Oguri, S. Nakai, “Single-longitudinal-mode operation and second-harmonic generation of Nd:YVO4 microchip lasers,” Opt. Lett. 16, 1665–1667 (1991).
    [CrossRef] [PubMed]
  7. J. -P. Meyn, G. Huber, “Intracavity frequency doubling of a continuous-wave, diode-laser-pumped neodymium lanthanum scandium borate laser,” Opt. Lett. 19, 1436–1438 (1994).
    [CrossRef] [PubMed]
  8. J. D. Bierlein, H. Vanherzeele, “Potassium titanyl phosphate: properties and new applications,” J. Opt. Soc. Am. B 6, 622–633 (1989).
    [CrossRef]
  9. H. H. Zenzie, P. F. Moulton, “Tunable optical parametric oscillations pumped by Ti:sapphire lasers,” Opt. Lett. 19, 963–965 (1994).
    [CrossRef] [PubMed]
  10. T. Chuang, A. D. Hays, H. R. Verdun, “Application of KTP as an electro-optic Q-switch,” in Advanced Solid-State Lasers, T. Y. Fan, B. H. T. Chai, eds., Vol. 20 of 1994 OSA Proceedings Series (Optical Society of America, Washington, D.C., 1994), pp. 314–318.
  11. C. A. Ebbers, Y. Toratani, K. Sato, K. Okada, “Thermally compensated KTP Q-switch for high average power lasers,” in Conference on Lasers and Electro-Optics, Vol. 8 of 1994 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1994), pp. 414–415.
  12. T. Taira, T. Sasaki, T. Kobayashi, “Polarization control of the Q-switch solid-state lasers with intra-cavity SHG crystals,” Trans. Inst. Electron. Eng. 74, 331–339 (1991); Electron. Commun. Jpn. 75, 1–12 (1992).
  13. T. Taira, H. Ogishi, O. Wakayama, T. Kobayashi, “Novel Q-switch and SHG composite device for microchip lasers,” in Extended Abstracts of the 39 Spring Meeting, 1992 (Japan Society of Applied Physics, Tokyo, Japan), p. 912.
  14. T. Taira, T. Kobayashi, “Q-switching and frequency doubling of solid-state lasers by a single intracavity KTP crystal,” IEEE J. Quantum Electron. 30, 800–804 (1994).
    [CrossRef]
  15. T. Taira, T. Kobayashi, “Frequency doubled and Q-switched Nd:YVO4 lasers,” in Compact Blue-Green Lasers, Vol. 1 of 1994 OSA Technical Digest Series (Optical Society of AmericaWashington, D.C., 1994), pp. 104–107.

1994

R. Scheps, J. F. Myers, G. Mizell, K. Yates, “Internally folded Nd:YAG and Nd:YVO4 lasers pumped by laser diodes,” IEEE J. Quantum Electron. 30, 2132–2135 (1994).
[CrossRef]

J. -P. Meyn, G. Huber, “Intracavity frequency doubling of a continuous-wave, diode-laser-pumped neodymium lanthanum scandium borate laser,” Opt. Lett. 19, 1436–1438 (1994).
[CrossRef] [PubMed]

H. H. Zenzie, P. F. Moulton, “Tunable optical parametric oscillations pumped by Ti:sapphire lasers,” Opt. Lett. 19, 963–965 (1994).
[CrossRef] [PubMed]

T. Taira, T. Kobayashi, “Q-switching and frequency doubling of solid-state lasers by a single intracavity KTP crystal,” IEEE J. Quantum Electron. 30, 800–804 (1994).
[CrossRef]

1991

1990

G. J. Kintz, T. Baer, “Single-frequency operation in solid-state laser materials with short absorption depths,” IEEE J. Quantum Electron. 26, 1457–1459 (1990).
[CrossRef]

1989

1988

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

1987

R. A. Fields, M. Birnbum, C. L. Fincher, “Highly efficient Nd:YVO4 diode-laser end-pumped laser,” Appl. Phys. Lett. 51, 1885–1886 (1987).
[CrossRef]

Baer, T.

G. J. Kintz, T. Baer, “Single-frequency operation in solid-state laser materials with short absorption depths,” IEEE J. Quantum Electron. 26, 1457–1459 (1990).
[CrossRef]

Bierlein, J. D.

Birnbum, M.

R. A. Fields, M. Birnbum, C. L. Fincher, “Highly efficient Nd:YVO4 diode-laser end-pumped laser,” Appl. Phys. Lett. 51, 1885–1886 (1987).
[CrossRef]

Byer, R. L.

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

Chuang, T.

T. Chuang, A. D. Hays, H. R. Verdun, “Application of KTP as an electro-optic Q-switch,” in Advanced Solid-State Lasers, T. Y. Fan, B. H. T. Chai, eds., Vol. 20 of 1994 OSA Proceedings Series (Optical Society of America, Washington, D.C., 1994), pp. 314–318.

Ebbers, C. A.

C. A. Ebbers, Y. Toratani, K. Sato, K. Okada, “Thermally compensated KTP Q-switch for high average power lasers,” in Conference on Lasers and Electro-Optics, Vol. 8 of 1994 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1994), pp. 414–415.

Fan, T. Y.

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

Fields, R. A.

R. A. Fields, M. Birnbum, C. L. Fincher, “Highly efficient Nd:YVO4 diode-laser end-pumped laser,” Appl. Phys. Lett. 51, 1885–1886 (1987).
[CrossRef]

Fincher, C. L.

R. A. Fields, M. Birnbum, C. L. Fincher, “Highly efficient Nd:YVO4 diode-laser end-pumped laser,” Appl. Phys. Lett. 51, 1885–1886 (1987).
[CrossRef]

Hays, A. D.

T. Chuang, A. D. Hays, H. R. Verdun, “Application of KTP as an electro-optic Q-switch,” in Advanced Solid-State Lasers, T. Y. Fan, B. H. T. Chai, eds., Vol. 20 of 1994 OSA Proceedings Series (Optical Society of America, Washington, D.C., 1994), pp. 314–318.

Huber, G.

Kintz, G. J.

G. J. Kintz, T. Baer, “Single-frequency operation in solid-state laser materials with short absorption depths,” IEEE J. Quantum Electron. 26, 1457–1459 (1990).
[CrossRef]

Kobayashi, T.

T. Taira, T. Kobayashi, “Q-switching and frequency doubling of solid-state lasers by a single intracavity KTP crystal,” IEEE J. Quantum Electron. 30, 800–804 (1994).
[CrossRef]

T. Taira, T. Sasaki, T. Kobayashi, “Polarization control of the Q-switch solid-state lasers with intra-cavity SHG crystals,” Trans. Inst. Electron. Eng. 74, 331–339 (1991); Electron. Commun. Jpn. 75, 1–12 (1992).

T. Taira, A. Mukai, Y. Nozawa, T. Kobayashi, “Single-mode oscillation of laser-diode-pumped Nd:YVO4 microchip lasers,” Opt. Lett. 16, 1955–1957 (1991).
[CrossRef] [PubMed]

T. Taira, H. Ogishi, O. Wakayama, T. Kobayashi, “Novel Q-switch and SHG composite device for microchip lasers,” in Extended Abstracts of the 39 Spring Meeting, 1992 (Japan Society of Applied Physics, Tokyo, Japan), p. 912.

T. Taira, T. Kobayashi, “Frequency doubled and Q-switched Nd:YVO4 lasers,” in Compact Blue-Green Lasers, Vol. 1 of 1994 OSA Technical Digest Series (Optical Society of AmericaWashington, D.C., 1994), pp. 104–107.

Kojima, T.

Meyn, J. -P.

Mizell, G.

R. Scheps, J. F. Myers, G. Mizell, K. Yates, “Internally folded Nd:YAG and Nd:YVO4 lasers pumped by laser diodes,” IEEE J. Quantum Electron. 30, 2132–2135 (1994).
[CrossRef]

Moulton, P. F.

Mukai, A.

Myers, J. F.

R. Scheps, J. F. Myers, G. Mizell, K. Yates, “Internally folded Nd:YAG and Nd:YVO4 lasers pumped by laser diodes,” IEEE J. Quantum Electron. 30, 2132–2135 (1994).
[CrossRef]

Nakai, S.

Nozawa, Y.

Ogishi, H.

T. Taira, H. Ogishi, O. Wakayama, T. Kobayashi, “Novel Q-switch and SHG composite device for microchip lasers,” in Extended Abstracts of the 39 Spring Meeting, 1992 (Japan Society of Applied Physics, Tokyo, Japan), p. 912.

Oguri, O.

Okada, K.

C. A. Ebbers, Y. Toratani, K. Sato, K. Okada, “Thermally compensated KTP Q-switch for high average power lasers,” in Conference on Lasers and Electro-Optics, Vol. 8 of 1994 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1994), pp. 414–415.

Sasaki, T.

T. Taira, T. Sasaki, T. Kobayashi, “Polarization control of the Q-switch solid-state lasers with intra-cavity SHG crystals,” Trans. Inst. Electron. Eng. 74, 331–339 (1991); Electron. Commun. Jpn. 75, 1–12 (1992).

T. Sasaki, T. Kojima, A. Yokotani, O. Oguri, S. Nakai, “Single-longitudinal-mode operation and second-harmonic generation of Nd:YVO4 microchip lasers,” Opt. Lett. 16, 1665–1667 (1991).
[CrossRef] [PubMed]

Sato, K.

C. A. Ebbers, Y. Toratani, K. Sato, K. Okada, “Thermally compensated KTP Q-switch for high average power lasers,” in Conference on Lasers and Electro-Optics, Vol. 8 of 1994 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1994), pp. 414–415.

Scheps, R.

R. Scheps, J. F. Myers, G. Mizell, K. Yates, “Internally folded Nd:YAG and Nd:YVO4 lasers pumped by laser diodes,” IEEE J. Quantum Electron. 30, 2132–2135 (1994).
[CrossRef]

Taira, T.

T. Taira, T. Kobayashi, “Q-switching and frequency doubling of solid-state lasers by a single intracavity KTP crystal,” IEEE J. Quantum Electron. 30, 800–804 (1994).
[CrossRef]

T. Taira, A. Mukai, Y. Nozawa, T. Kobayashi, “Single-mode oscillation of laser-diode-pumped Nd:YVO4 microchip lasers,” Opt. Lett. 16, 1955–1957 (1991).
[CrossRef] [PubMed]

T. Taira, T. Sasaki, T. Kobayashi, “Polarization control of the Q-switch solid-state lasers with intra-cavity SHG crystals,” Trans. Inst. Electron. Eng. 74, 331–339 (1991); Electron. Commun. Jpn. 75, 1–12 (1992).

T. Taira, T. Kobayashi, “Frequency doubled and Q-switched Nd:YVO4 lasers,” in Compact Blue-Green Lasers, Vol. 1 of 1994 OSA Technical Digest Series (Optical Society of AmericaWashington, D.C., 1994), pp. 104–107.

T. Taira, H. Ogishi, O. Wakayama, T. Kobayashi, “Novel Q-switch and SHG composite device for microchip lasers,” in Extended Abstracts of the 39 Spring Meeting, 1992 (Japan Society of Applied Physics, Tokyo, Japan), p. 912.

Toratani, Y.

C. A. Ebbers, Y. Toratani, K. Sato, K. Okada, “Thermally compensated KTP Q-switch for high average power lasers,” in Conference on Lasers and Electro-Optics, Vol. 8 of 1994 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1994), pp. 414–415.

Vanherzeele, H.

Verdun, H. R.

T. Chuang, A. D. Hays, H. R. Verdun, “Application of KTP as an electro-optic Q-switch,” in Advanced Solid-State Lasers, T. Y. Fan, B. H. T. Chai, eds., Vol. 20 of 1994 OSA Proceedings Series (Optical Society of America, Washington, D.C., 1994), pp. 314–318.

Wakayama, O.

T. Taira, H. Ogishi, O. Wakayama, T. Kobayashi, “Novel Q-switch and SHG composite device for microchip lasers,” in Extended Abstracts of the 39 Spring Meeting, 1992 (Japan Society of Applied Physics, Tokyo, Japan), p. 912.

Yates, K.

R. Scheps, J. F. Myers, G. Mizell, K. Yates, “Internally folded Nd:YAG and Nd:YVO4 lasers pumped by laser diodes,” IEEE J. Quantum Electron. 30, 2132–2135 (1994).
[CrossRef]

Yokotani, A.

Zenzie, H. H.

Appl. Phys. Lett.

R. A. Fields, M. Birnbum, C. L. Fincher, “Highly efficient Nd:YVO4 diode-laser end-pumped laser,” Appl. Phys. Lett. 51, 1885–1886 (1987).
[CrossRef]

IEEE J. Quantum Electron.

T. Taira, T. Kobayashi, “Q-switching and frequency doubling of solid-state lasers by a single intracavity KTP crystal,” IEEE J. Quantum Electron. 30, 800–804 (1994).
[CrossRef]

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

R. Scheps, J. F. Myers, G. Mizell, K. Yates, “Internally folded Nd:YAG and Nd:YVO4 lasers pumped by laser diodes,” IEEE J. Quantum Electron. 30, 2132–2135 (1994).
[CrossRef]

G. J. Kintz, T. Baer, “Single-frequency operation in solid-state laser materials with short absorption depths,” IEEE J. Quantum Electron. 26, 1457–1459 (1990).
[CrossRef]

J. Opt. Soc. Am. B

Opt. Lett.

Trans. Inst. Electron. Eng.

T. Taira, T. Sasaki, T. Kobayashi, “Polarization control of the Q-switch solid-state lasers with intra-cavity SHG crystals,” Trans. Inst. Electron. Eng. 74, 331–339 (1991); Electron. Commun. Jpn. 75, 1–12 (1992).

Other

T. Taira, H. Ogishi, O. Wakayama, T. Kobayashi, “Novel Q-switch and SHG composite device for microchip lasers,” in Extended Abstracts of the 39 Spring Meeting, 1992 (Japan Society of Applied Physics, Tokyo, Japan), p. 912.

T. Taira, T. Kobayashi, “Frequency doubled and Q-switched Nd:YVO4 lasers,” in Compact Blue-Green Lasers, Vol. 1 of 1994 OSA Technical Digest Series (Optical Society of AmericaWashington, D.C., 1994), pp. 104–107.

T. Chuang, A. D. Hays, H. R. Verdun, “Application of KTP as an electro-optic Q-switch,” in Advanced Solid-State Lasers, T. Y. Fan, B. H. T. Chai, eds., Vol. 20 of 1994 OSA Proceedings Series (Optical Society of America, Washington, D.C., 1994), pp. 314–318.

C. A. Ebbers, Y. Toratani, K. Sato, K. Okada, “Thermally compensated KTP Q-switch for high average power lasers,” in Conference on Lasers and Electro-Optics, Vol. 8 of 1994 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1994), pp. 414–415.

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Figures (5)

Fig. 1
Fig. 1

Schematic of the diode-laser-pumped Nd:YVO4 laser. A single KTP crystal functioned as the intracavity frequency doubler and the electro-optic Q switcher. H. V., high voltage.

Fig. 2
Fig. 2

cw input–output power characteristics of the fundamental wave (P ω) and the second-harmonic (SH) wave (P ) of Nd:YVO4 laser.

Fig. 3
Fig. 3

Polarization ratio (P) of the transmitted fundamental wave and relative SH power (P ) as a function of applied voltage for the type II KTP crystal (t = 1 mm, l = 5 mm).

Fig. 4
Fig. 4

Pulse shape of the SH output of the Q-switched laser. The delay time of the laser pulse from the high-voltage pulse was ~30 ns.

Fig. 5
Fig. 5

Peak SH output power (P p ) and pulse width (τ) of the Q-switched laser as a function of the pump power. The pulse repetition rate was 100 Hz.

Equations (2)

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P = ( I max - I min ) / ( I max + I min ) ,
P = cos ( δ 0 + π V c / V π ) ,

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