外文题目: Influence of phase mismatching on temporal waveform of pulse in the process of frequency conversion
作者: Cui, Zijian; Liu, Dean; Liu, Yaqun; Miao, Jie; Zhou, Shenlei; Zhu, Baoqiang; Zhu, Jianqiang
刊名: Proc.SPIE
来源图书: 2015 INTERNATIONAL CONFERENCE ON OPTICAL INSTRUMENTS AND TECHNOLOGY: ADVANCED LASERS AND APPLICATIONS
年: 2015 卷: 9621 文章编号：962107
会议名称: International Conference on Optical Instruments and Technology - Advanced Lasers and Applications
英文关键词:
nonlinear optics; high power laser; frequency conversion; phase mismatching; temporal waveform; pulse width
EFFICIENT 3RD-HARMONIC GENERATION; PARTIALLY DEUTERATED KDP; BROAD-BAND; HARMONIC-GENERATION; PICOSECOND PULSES; CRYSTALS
英文摘要:
The influence of phase mismatching on output pulse temporal waveform in the process of second and third harmonic generation at various power densities with different detuning angles is studied based on nonlinear coupled-wave equations. The rules of different frequencies pulse width vary with the detuning angle have been analyzed quantitatively in potassium dihydrogen phosphate (KDP) crystals. The results of numerical simulation show that in high power laser frequency conversion system, the changes of fundamental pulse width are more sensitive to the detuning angle than second harmonic in the process of doubling, and the maximum variation of the full-width at half-maximum (FWHM) of fundamental at different detuning angles is about 19.0%. For tripling, the output pulse width changes of fundamental and second harmonic are sensitive to the detuning angle at high power density, and the maximum variation of their FWHM at different detuning angles are about 19.0% and 19.2%, respectively. However, the SH pulse width is almost unchanged at low power density. The results of this study may provide a promising route to determine the best angle for phase matching in the angle adjusting process of experiment.


文献类型: 会议论文
正文语种: English
收录类别: ISTP
DOI: 10.1117/12.2191489


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