A 123 W Nd:YVO₄ slab laser with high beam quality output

Abstract

The laser diode (LD) partially end-pumped slab laser with hybrid resonator is a kind of novel solid-state laser that can achieve high power with high beam quality. Using this configuration, taking Nd:YVO₄ as the slab gain media, a 123 W output was obtained when the pumping power was 265 W, and the optical-to-optical efficiency and slope efficiency were 46.4% and 52.4%, respectively. The beam quality M² factors in the unstable direction and the stable direction were 1.3 at the output power of 98 W.

Keywords

laser diode (LD) / slab laser / Nd:YVO₄ / hybrid resonator / 1064 nm laser

References

[1] Zhang H R, Gao M Y, Zheng Y, Yao J Q. High power diode-end-pumped Nd:YVO₄ laser. Chinese Journal of Lasers, 2004, 31(1): 19-21 (in Chinese)

[2] Minassian A, Thompson B A, Smith G, Damzen M J. High-power scaling (>100 W) of a diode-pumped TEM₀₀ Nd:GdVO₄ laser system. IEEE Journal of Selected Topics in Quantum Electronics, 2005, 11(3): 621-625

[3] Xiao L, Cheng X J, Xu J Q. High-Power Nd:YAG planar waveguide laser with YAG and Al₂O₃ claddings. Optics Communications, 2008, 281(14): 3781-3785

[4] Du K M, Wu N L, Xu J D, Giesekus J, Loosen P, Poprawe R. Partially end-pumped Nd:YAG slab laser with a hybrid resonator. Optics Letters, 1998, 23(5): 370-372

[5] Shi P, Li D J, Zhang H L, Wang Y D, Du K M. An 110 W Nd:YVO₄ slab laser with high beam quality output. Optics Communications, 2004, 229(1-6): 349-354

[6] Shi P, Li D J, Zhang H L, Du K M. High power partially end-pumped slab laser with hybrid resonator. Acta Optica Sinica, 2004, 24(4): 491-494 (in Chinese)

[7] Jin Q, Wei X Y, Gao J C, Wu N L. Diode end pumped hybrid cavity Nd:YVO₄ slab laser. Chinese Journal of Quantum Electronics, 2005, 22(4): 528-533 (in Chinese)

[8] Shao J, Li X L, Feng Y T, Lu Y T. LD-end-pumped Nd:YVO₄ slab laser and its thermal effects. Acta Optica Sinica, 2008, 28(3): 497-501 (in Chinese)

[9] Zhu P, Li D J, Hu P X, Schell A, Shi P, Haas C R, Wu N L, Du K M. High efficiency 165 W near-diffraction-limited Nd:YVO₄ slab oscillator pumped at 880 nm. Optics Letters, 2008, 33(17): 1930-1932

[10] Siegman A E. New developments in laser resonators. Proceedings of SPIE, 1990, 1224: 2-14

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg