中国激光, 2014, 41 (9): 0902001, 网络出版: 2014-09-05  

基于MIIPS的相位调制参量优化选择研究

Research on Optimization Selection of Phase Modulation Parameters in MIIPS
作者单位
中国科学院上海光学精密机械研究所强场激光物理国家重点实验室, 上海 201800
摘要
国家自然科学基金(61178006,11274327)、上海市浦江人才计划(12PJ1409300)、国家青年计划
Abstract
A femtosecond pulse shaper is set up based on a liquid crystal spatial light modulator. The pulse shaper is driven by home-developed LabVIEW programs. The second harmonic generation (SHG) spectrum is recorded when the femtosecond laser pulse is modulated by a sinusoidal phase function. The multi-photon intra-pulse interference phase scan (MIIPS) trace is obtained with the parameter δ, witch is the initial phase of sinusoidal phase scanning, scanning from 0 to 4π. The effects of the sinusoidal phase′s amplitude and frequency (α and γ) are studied in detail for the optimization of MIIPS. The results not only provide a guidance for the phase measurement and compensation in MIIPS, but also supply a method for narrowing and shaping SHG spectrum, which will be useful in many fields, such as two-photon absorption spectroscopy, femtosecond chemistry and femtosecond biology.
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赵冠凯, 刘军, 李儒新. 基于MIIPS的相位调制参量优化选择研究[J]. 中国激光, 2014, 41(9): 0902001. Zhao Guankai, Liu Jun, Li Ruxin. Research on Optimization Selection of Phase Modulation Parameters in MIIPS[J]. Chinese Journal of Lasers, 2014, 41(9): 0902001.

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