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基于光传输理论,获得了弱调制情况下光学元件"缺陷"分布功率谱密度 (power spectral density, PSD)与光束近场强度分布PSD之间的定量关系;通过数值模拟的方法,针对高功率固体激光装置的基本单元(线性介质、非线性介质以及空间滤波器)对获得的理论关系进行了具体的验证和讨论.研究结果表明,弱调制下,只存在振幅型或位相型"缺陷"分布时,光学元件"缺陷"分布PSD与光束近场强度分布PSD通过近场强度分布PSD的系统传输因子联系,传输因子与系统的构型和运行状态有关.研究结果为光学元件"缺陷"分布指标的获得提供了理论基础,对高功率固体激光装置负载能力的提升起到了一定的指导作用.Based on beam propagation theory, the quantitative relation between PSD (power spectral density) of "defects" distribution on optics and that of near field intensity was studied. Its validity was discussed on linear medium, nonlinear medium and spatial filter. The results show that PSD of "defects" distribution on optics and PSD of near field intensity are connected by a system propagation factor when the modulation is weak, which is determined by system architecture and operation state. These results provide a theoretical basis for specifications of "defects" distribution on optics, and also a guidance to enhancing the power of high power solid-state laser system.
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Keywords:
- "defects" distribution /
- power spectral density /
- optics /
- beam quality
[1] Simmons W W, Hunt J T, Warren W E 1981 IEEE J. Quantum Electron. 17 1727
[2] Zhou L D, Su J Q, Li P, Liu L Q, Wang W Y, Wang F, Mo L, Cheng W Y, Zhang X M 2009 Acta Phys. Sin. 58 6279(in Chinese)[周丽丹、粟敬钦、李 平、刘兰琴、王文义、王 方、莫 磊、程文雍、张小民 2009 58 6279]
[3] Peng Z T, Jing F, Liu L Q, Zhu Q H, Zhang B, Zhang K, Liu H, Zhang Q Q, Cheng X F, Jiang D B, Liu H J, Peng H S 2003 Acta Phys. Sin. 52 0087(in Chinese)[彭志涛、景 峰、刘兰琴、朱启华、张 波、张 昆、刘 华、张清泉、程晓峰、蒋东镔、刘红婕、彭翰生 2003 52 0087]
[4] Zhou L D, Su J Q, Liu L Q, Wang W Y, Wang F, Mo L, Li P, Zhang X M 2009 High Power Laser and Particle Beams 21 326(in Chinese)[周丽丹、粟敬钦、刘兰琴、王文义、王 方、莫 磊、李 平、张小民 2009 强激光与粒子束 21 326] 〖5] Su J Q 2003 Post Doctorate Dissertation (Mianyang, Sichuan: China Academy of Engineering Physical) (in Chinese) [粟敬钦 2003 博士后出站报告 (四川绵阳:中国工程物理研究院)]
[5] Bespalov V I, Talanov V I 1966 JETP Lett. 3 307
[6] Wen S C, Qian L J, Fan D Y 2003 Acta Phys. Sin.52 1640(in Chinese)[文双春、钱列加、范滇元 2003 52 1640]
[7] Williams W H, Renard P A, Manes K R 1996 UCRL-LR-105821-96-1
[8] Sacks R A, Henesian M A, Haney S W, Trenholme J B 1996 UCRL-LR-105821-96-4 207
[9] Fan D Y 1981 Acta Opt. Sin. 1 395[范滇元 1981 光学学报 1 395]
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[1] Simmons W W, Hunt J T, Warren W E 1981 IEEE J. Quantum Electron. 17 1727
[2] Zhou L D, Su J Q, Li P, Liu L Q, Wang W Y, Wang F, Mo L, Cheng W Y, Zhang X M 2009 Acta Phys. Sin. 58 6279(in Chinese)[周丽丹、粟敬钦、李 平、刘兰琴、王文义、王 方、莫 磊、程文雍、张小民 2009 58 6279]
[3] Peng Z T, Jing F, Liu L Q, Zhu Q H, Zhang B, Zhang K, Liu H, Zhang Q Q, Cheng X F, Jiang D B, Liu H J, Peng H S 2003 Acta Phys. Sin. 52 0087(in Chinese)[彭志涛、景 峰、刘兰琴、朱启华、张 波、张 昆、刘 华、张清泉、程晓峰、蒋东镔、刘红婕、彭翰生 2003 52 0087]
[4] Zhou L D, Su J Q, Liu L Q, Wang W Y, Wang F, Mo L, Li P, Zhang X M 2009 High Power Laser and Particle Beams 21 326(in Chinese)[周丽丹、粟敬钦、刘兰琴、王文义、王 方、莫 磊、李 平、张小民 2009 强激光与粒子束 21 326] 〖5] Su J Q 2003 Post Doctorate Dissertation (Mianyang, Sichuan: China Academy of Engineering Physical) (in Chinese) [粟敬钦 2003 博士后出站报告 (四川绵阳:中国工程物理研究院)]
[5] Bespalov V I, Talanov V I 1966 JETP Lett. 3 307
[6] Wen S C, Qian L J, Fan D Y 2003 Acta Phys. Sin.52 1640(in Chinese)[文双春、钱列加、范滇元 2003 52 1640]
[7] Williams W H, Renard P A, Manes K R 1996 UCRL-LR-105821-96-1
[8] Sacks R A, Henesian M A, Haney S W, Trenholme J B 1996 UCRL-LR-105821-96-4 207
[9] Fan D Y 1981 Acta Opt. Sin. 1 395[范滇元 1981 光学学报 1 395]
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