光学学报, 2012, 32 (6): 0614003, 网络出版: 2012-04-16
种子注入环形腔人眼安全KTP参变振荡器的研究
Investigation on Eye-Safe Ring-Cavity KTP Optical Parametric Oscillator with Seed Injection
激光器 人眼安全激光 光参变振荡器 磷酸氧钛钾 环形腔 种子注入 lasers eye-safe laser optical parametric oscillator KTP ring cavity seed injection
摘要
利用电光调Q的Nd:YAG激光器抽运非临界相位匹配(θ=90°,φ=0°)环形腔KTP光学参变振荡器(OPO),实现了高能量人眼安全波段的1.57 μm激光输出。理论与实验结果表明,减小谐振腔长度和注入种子源激光可以有效降低阈值,提高输出能量。当Nd:YAG激光器抽运能量为88 mJ时,注入种子源功率由0 mW增加到6 mW,输出能量由8.8 mJ增加到14 mJ。当抽运能量为167.7 mJ,注入种子源功率达到6 mW时,最大输出能量达到46 mJ,峰值功率7.44 MW。
Abstract
An eye-safe laser source at 1.57 μm is demonstrated by using a non-critically phase-matched (θ=90°, φ=0°) ring cavity optical parametric oscillator pumped by an electro-optic Q-switched Nd:YAG laser. Theoretical and experimental results show that reducing the cavity length and injection of seed laser can effectively reduce the threshold, and increase the output energy. When the Nd:YAG laser energy is 88 mJ and the injected signal power changes from 0 to 6 mW, the output energy is enhanced from 8.8 to 14 mJ. When the pump energy is 167.7 mJ and the injected signal power is 6 mW, the maximum output energy of 46 mJ is obtained, corresponding to the peak power of 7.44 MW.
龙启强, 钟凯, 洪光烈. 种子注入环形腔人眼安全KTP参变振荡器的研究[J]. 光学学报, 2012, 32(6): 0614003. Long Qiqiang, Zhong Kai, Hong Guanglie. Investigation on Eye-Safe Ring-Cavity KTP Optical Parametric Oscillator with Seed Injection[J]. Acta Optica Sinica, 2012, 32(6): 0614003.