Abstract

A single-mode output of 221 and 16 mW for the fundamental and second-harmonic light was obtained with the combination of a Nd:YVO4 microchip laser and an intracavity KTP crystal. It was found that the beam size and laser power in a plano–plano cavity were dependent on the absorption coefficient of the laser medium and that the material that had a higher absorption coefficient produced higher output power and smaller beam size in the laser cavity. This means that Nd:YVO4 is suitable not only for single-mode oscillation but also for efficient intracavity second-harmonic generation.

© 1991 Optical Society of America

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References

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  1. T. J. Kane, R. L. Byer, Opt. Lett. 10, 65 (1985).
    [Crossref] [PubMed]
  2. K. Wallmeroyh, P. Peuser, Electron. Lett. 24, 1086 (1988).
    [Crossref]
  3. J. J. Zayhowski, A. Mooradian, Opt. Lett. 14, 24 (1989).
    [Crossref] [PubMed]
  4. G. J. Kintz, T. Baer, IEEE J. Quantum Electron. 26, 1457 (1990).
    [Crossref]
  5. A. Siegman, Lasers (University Science Books, Mill Valley, Calif., 1986), p. 465.
  6. J. J. Zayhowski, IEEE J. Quantum Electron. 26, 2052 (1990).
    [Crossref]
  7. K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
    [Crossref]
  8. J. J. Zayhowski, in Digest of Meeting on Advanced Solid State Lasers (Optical Society of America, Washington, D.C., 1990), pp. 121–123.
  9. G. E. James, E. M. Harrell, C. Bracikowski, K. Wiesenfeld, R. Roy, Opt. Lett. 15, 1141 (1990).
    [Crossref] [PubMed]

1990 (4)

G. J. Kintz, T. Baer, IEEE J. Quantum Electron. 26, 1457 (1990).
[Crossref]

J. J. Zayhowski, IEEE J. Quantum Electron. 26, 2052 (1990).
[Crossref]

K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
[Crossref]

G. E. James, E. M. Harrell, C. Bracikowski, K. Wiesenfeld, R. Roy, Opt. Lett. 15, 1141 (1990).
[Crossref] [PubMed]

1989 (1)

1988 (1)

K. Wallmeroyh, P. Peuser, Electron. Lett. 24, 1086 (1988).
[Crossref]

1985 (1)

Baer, T.

G. J. Kintz, T. Baer, IEEE J. Quantum Electron. 26, 1457 (1990).
[Crossref]

Bracikowski, C.

Byer, R. L.

Harrell, E. M.

James, G. E.

Kanabe, T.

K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
[Crossref]

Kane, T. J.

Kintz, G. J.

G. J. Kintz, T. Baer, IEEE J. Quantum Electron. 26, 1457 (1990).
[Crossref]

Kuwano, Y.

K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
[Crossref]

Mooradian, A.

Nagamoto, K.

K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
[Crossref]

Naito, K.

K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
[Crossref]

Nakai, S.

K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
[Crossref]

Nakatsuka, M.

K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
[Crossref]

Peuser, P.

K. Wallmeroyh, P. Peuser, Electron. Lett. 24, 1086 (1988).
[Crossref]

Roy, R.

Saito, S.

K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
[Crossref]

Sasaki, T.

K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
[Crossref]

Siegman, A.

A. Siegman, Lasers (University Science Books, Mill Valley, Calif., 1986), p. 465.

Wallmeroyh, K.

K. Wallmeroyh, P. Peuser, Electron. Lett. 24, 1086 (1988).
[Crossref]

Wiesenfeld, K.

Yamanaka, M.

K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
[Crossref]

Yosida, K.

K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
[Crossref]

Zayhowski, J. J.

J. J. Zayhowski, IEEE J. Quantum Electron. 26, 2052 (1990).
[Crossref]

J. J. Zayhowski, A. Mooradian, Opt. Lett. 14, 24 (1989).
[Crossref] [PubMed]

J. J. Zayhowski, in Digest of Meeting on Advanced Solid State Lasers (Optical Society of America, Washington, D.C., 1990), pp. 121–123.

Electron. Lett. (1)

K. Wallmeroyh, P. Peuser, Electron. Lett. 24, 1086 (1988).
[Crossref]

IEEE J. Quantum Electron. (2)

G. J. Kintz, T. Baer, IEEE J. Quantum Electron. 26, 1457 (1990).
[Crossref]

J. J. Zayhowski, IEEE J. Quantum Electron. 26, 2052 (1990).
[Crossref]

Opt. Lett. (3)

Rev. Laser Eng. (1)

K. Nagamoto, M. Nakatsuka, K. Naito, M. Yamanaka, K. Yosida, T. Sasaki, T. Kanabe, S. Nakai, S. Saito, Y. Kuwano, Rev. Laser Eng. 18, 646 (1990) (in Japanese).
[Crossref]

Other (2)

J. J. Zayhowski, in Digest of Meeting on Advanced Solid State Lasers (Optical Society of America, Washington, D.C., 1990), pp. 121–123.

A. Siegman, Lasers (University Science Books, Mill Valley, Calif., 1986), p. 465.

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Figures (4)

Fig. 1
Fig. 1

Output power of Nd:YVO4 lasers at 1.064 μm as a function of absorbed pumping power. Circles and squares show cases of 2.02 and 1.1 at. % Nd-doped YAG lasers, respectively. The solid and dashed lines show output with single longitudinal mode and output with multimode, respectively.

Fig. 2
Fig. 2

Oscillating waist size in the cavity and output power as a function of absorption coefficients of laser materials. The pumping power was 825 mW, and the pumping spot size was 230 and 100 μm for directions parallel and perpendicular to junction of the laser diode, respectively. The solid and dashed lines show directions perpendicular and parallel to the junction of the laser diode, respectively. The circles and double circles show the case of cavity lengths of 5 mm, and the triangles and double triangles show the case of cavity lengths of 10 mm. The data at 8.5 cm−1 show the case of 1.1% Nd:YAG, whereas the other data show the case of Nd:YVO4.

Fig. 3
Fig. 3

Output as a function of waist size in the direction perpendicular to the junction of the laser diode. Reflectivity off the output mirror is 99.8%.

Fig. 4
Fig. 4

Dependence of SHG output power P2ω and fundamental output Pω(total) and Pω(C), which has a polarization parallel to the c axis of Nd:YVO4, on the temperature of the KTP crystal. The thickness of the KTP crystal is 4.3 mm.

Tables (1)

Tables Icon

Table 1 Nd Density, Absorption Coefficient (α) at the Pumping Wavelength (809 nm), and Absorption Depths (la) of the Laser Materials

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