High-efficiency LBO crystal for high-power Q-switched intracavity SHG Nd:YAG lasers

Gordon Gu; Clifford E. Morrow; Shixiong Chen

doi:10.1117/12.236147

25 March 1996 High-efficiency LBO crystal for high-power Q-switched intracavity SHG Nd:YAG lasers

Gordon Gu, Clifford E. Morrow, Shixiong Chen

Proceedings Volume 2698, Solid State Lasers V; (1996) https://doi.org/10.1117/12.236147
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

KTiOPO₄ (KTP) has been a frequent choice for second harmonic generation (SHG) of Nd:YAG laser applications. However for high power intracavity frequency doubled Nd:YAG laser systems, we have found it is very difficult to use because of the low damage threshold, smaller acceptance angle and higher birefringence (larger walk-off angle). In order to achieve high power (more than 80 watts) of 532 nm laser light from a single Nd:YAG laser cavity, we have studied the intracavity SHG of lithium triborate (LiB₃O₅ or LBO), a relatively new nonlinear optical crystal discovered in 1989. Both theoretical and experimental results are discussed in terms of the damage threshold, SHG conversion efficiency, acceptance and walk- off angles, as well as the techniques for both critical and non-critical phase-matching.

Citation Download Citation

Gordon Gu, Clifford E. Morrow, and Shixiong Chen "High-efficiency LBO crystal for high-power Q-switched intracavity SHG Nd:YAG lasers", Proc. SPIE 2698, Solid State Lasers V, (25 March 1996); https://doi.org/10.1117/12.236147

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