Abstract

This paper reports a diode-end-pumped continuous-wave (CW) Nd:YAG laser operating at 946-nm by utilizing the 4 F 3/2-4 I 9/2 transition. We demonstrated that at an incident pump power of 27.7 W, an output power of 8.3-W could be achieved with a slope efficiency of 33.5%. To the best of our knowledge, this is the highest CW output power at 946 nm generated by LD end-pumped Nd:YAG lasers. By using intracavity frequency doubling with an LBO crystal, we further obtained a 473-nm blue laser with an output power of 1.2 W, achieving an optical-to-optical conversion efficiency of 7.1% at a pump power of 16.9 W. The short-term power instability of the blue laser was less than 1 %.

© 2005 Optical Society of America

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References

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  1. T. Y. Fan, R. L. Byer, "Modeling and CW Operation of a Quasi-Three-Level 946 nm Nd:YAG laser," IEEE. J. Quantum Electron. 23, 605 (1987).
    [CrossRef]
  2. W. P. Risk, W. Length, "Room-temperature, continuous-wave, 946-nm Nd:YAG laser pumped by laserdiode arrays and intracavity frequency doubling to 473 nm," Opt. Lett. 12, 993 (1987).
    [CrossRef] [PubMed]
  3. G. J. Dixon, Z. M. Zhang, R. S. F. Chang, N. Djeu, "Efficient blue emission from an intracavity-doubled 946-nm Nd:YAG laser," Opt. Lett. 13, 137 (1988).
    [CrossRef] [PubMed]
  4. G. Hollemann, E. Peik, H. Walther, "Frequency-stabilized diode-pumped Nd:YAG laser at 946 nm with harmonics at 473 and 237 nm," Opt. Lett. 19, 192 (1994).
    [CrossRef] [PubMed]
  5. W. A. Clarkson, R. Koch, D. C. Hanna, "Room-temperature diode-bar-pumped Nd:YAG laser at 946 nm," Opt. Lett. 21,737 (1996).
    [CrossRef] [PubMed]
  6. T. Kellner, F. Heine, G. Huber, "Efficient laser performance of Nd:YAG at 946 nm and intracavity frequency doubling with LiJO3, â-BaB2O4, and LiB3O5," Appl. Phys. B 65, 789 (1997).
    [CrossRef]
  7. M. Pierrou, F. Laurell, H. Karlsson, T. Kellner, C. Czeranowsky, G. Huber, "Generation of 740 mW of blue light by intracavity frequency doubling with a first-order quasi-phase-matched KTiOPO4 crystal," Opt. Lett. 24, 205 (1999).
    [CrossRef]
  8. ZHOU Rui, ZHAO Shi-Yong, CAI Zhi-Qiang, ZHANG Qiang, WEN Wu-Qi, DING Xin, WANG Peng, DING Li-Li, YAO Jian-Quan, "High Power Diode-End-Pumped Nd:YAG 946-nm laser and its Efficient Frequency doubling," Chin. Phys. Lett. 22, 1413 (2005).
    [CrossRef]
  9. M. Abraham, A. Bar-Lev, H. Epshtein, A. Goldring, Y. Zimmermann, E. Lebiush, R. Lavi, "7.4W CW output power of Nd:YAG laser radiation at 946nm and 500mW of 473nm laser by extra cavity doubling using periodically poled KTP," In: Advanced Solid-State Lasers, OSA Technical Digest (Seattle, Washington, USA, 28-31 Jan 2001), 543 (2001)
  10. C. Czeranowsky, E. Heumann, G. Huber, "All-solid-state continuous-wave frequency-doubled Nd:YAGBiBO laser with 2.8-W output power at 473 nm," Opt. Lett. 28, 432 (2003).
    [CrossRef] [PubMed]
  11. A.K.Cousins, "Temperature and thermal stress scaling in finite-length end-pumped laser rods," IEEE J. Quantum Electron. 28, 1057 (1992).
    [CrossRef]

Appl. Phys. B (1)

T. Kellner, F. Heine, G. Huber, "Efficient laser performance of Nd:YAG at 946 nm and intracavity frequency doubling with LiJO3, â-BaB2O4, and LiB3O5," Appl. Phys. B 65, 789 (1997).
[CrossRef]

Chin. Phys. Lett. (1)

ZHOU Rui, ZHAO Shi-Yong, CAI Zhi-Qiang, ZHANG Qiang, WEN Wu-Qi, DING Xin, WANG Peng, DING Li-Li, YAO Jian-Quan, "High Power Diode-End-Pumped Nd:YAG 946-nm laser and its Efficient Frequency doubling," Chin. Phys. Lett. 22, 1413 (2005).
[CrossRef]

IEEE J. Quantum Electron. (1)

A.K.Cousins, "Temperature and thermal stress scaling in finite-length end-pumped laser rods," IEEE J. Quantum Electron. 28, 1057 (1992).
[CrossRef]

IEEE. J. Quantum Electron. (1)

T. Y. Fan, R. L. Byer, "Modeling and CW Operation of a Quasi-Three-Level 946 nm Nd:YAG laser," IEEE. J. Quantum Electron. 23, 605 (1987).
[CrossRef]

Opt. Let. (1)

W. A. Clarkson, R. Koch, D. C. Hanna, "Room-temperature diode-bar-pumped Nd:YAG laser at 946 nm," Opt. Lett. 21,737 (1996).
[CrossRef] [PubMed]

Opt. Lett. (5)

OSA Technical Digest (1)

M. Abraham, A. Bar-Lev, H. Epshtein, A. Goldring, Y. Zimmermann, E. Lebiush, R. Lavi, "7.4W CW output power of Nd:YAG laser radiation at 946nm and 500mW of 473nm laser by extra cavity doubling using periodically poled KTP," In: Advanced Solid-State Lasers, OSA Technical Digest (Seattle, Washington, USA, 28-31 Jan 2001), 543 (2001)

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Figures (4)

Fig. 1.
Fig. 1.

Schematic diagram of the high power diode-end-pumped 946-nm laser

Fig. 2.
Fig. 2.

Calculated and measured thermal focal lengths under different incident pump powers.

Fig. 3.
Fig. 3.

Measured output powers and beam qualities at 946 nm as a function of incident pump powers.

Fig. 4.
Fig. 4.

Measured output powers of the blue laser (473 nm) under different incident pump powers.

Equations (1)

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f th = 2 π K c ω p 2 ξ P abs [ d n d T + ( n 0 1 ) ( 1 + ν ) α T + n 0 3 α T C r ] 1 ,

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