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Pressure dependence of intrapulse Raman scattering of single- and few-cycle pulses in gaseous deuterium

机译:气态氘中单周期和少周期脉冲的脉冲内拉曼散射的压力依赖性

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摘要

We studied the effect of pressure variation on intrapulse Raman scattering for a single-cycle and few-cycle pulses inna gas cell of a given length filled with gaseous deuterium, in the framework of a new model equation that goesnbeyond the slowly varying envelope approximation. We show that, for a single-cycle pulse, pressure variation doesnnot have any influence on the pulse spectrum. On the other hand, for a four-cycle pulse, an increase in pressurenconsiderably affects the pulse spectrum and leads to substantial broadening and blueshift of the outputnpulse spectrum. Also, with increasing pressure, more and more energy is transferred from the red to the bluencomponents.
机译:在超出缓慢变化的包络近似的新模型方程框架内,我们研究了在给定长度的气态氘气体电池中,单周期和几个周期脉冲的压力变化对脉冲内拉曼散射的影响。我们表明,对于单周期脉冲,压力变化对脉冲频谱没有任何影响。另一方面,对于四周期脉冲,压力的增加会极大地影响脉冲频谱,并导致输出脉冲频谱的大幅变宽和蓝移。而且,随着压力的增加,越来越多的能量从红色组分转移到蓝色组分。

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  • 来源
    《Optics Letters》 |2010年第12期|p.2019-2021|共3页
  • 作者单位

    Department of Physics, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India*Corresponding author: ajitk@physics.iitd.ac.in;

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