Propagation characteristics of nanometer-level broadband chirped pulsein high power laser system

Liu Lanqin; Zhang Ying; Wang Wenyi; Huang Wanqing; Mo Lei; Guo Dan; Jing Feng

Volume 24 Issue 07

Jun. 2012

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(07): 1718-1722

cao bai ling, wu cheng jiu, rao rui zhong, et al. Atmospheric attenuation of the HF and DF laser radiation[J]. High Power Laser and Particle Beams, 2003, 15.

Citation:

Liu Lanqin, Zhang Ying, Wang Wenyi, et al. Propagation characteristics of nanometer-level broadband chirped pulsein high power laser system[J]. High Power Laser and Particle Beams, 2012, 24: 1718-1722.

cao bai ling, wu cheng jiu, rao rui zhong, et al. Atmospheric attenuation of the HF and DF laser radiation[J]. High Power Laser and Particle Beams, 2003, 15.

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Propagation characteristics of nanometer-level broadband chirped pulsein high power laser system

1.
Research Center of Laser Fusion,CAEP,P.O.Box 919-988,Mianyang 621900,China

Publish Date: 2012-07-15

Abstract

Abstract

High frequency spatial modulation induced by Fresnel diffraction of broadband nanosecond chirped laser pulse were studied. It shows that the hundreds-nm broadband pulse has some effects on Fresnel diffraction, while the tens-nm one has hardly any. Moreover, three B-integral expressions and the fast gain frequency of tens-nm broadband nanosecond chirped laser pulse were studied, and compared with the nonlinar experiments of narrowband pulse and chirped pulse stacking on Technical Intepration Lines facility. The results reveal that, the maximal B-integral or the weighted average B-integral can better reflect the nonlinear self-focusing phenomenon, and there are no distinct differences between the narrowband and the tens-nm broadband nanosecond laser pulses with respect to the fast gain frequency.
- broadband laser,
- chirped pulse,
- propagation characteristics,
- fresnel diffraction

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