有振幅调制和相位畸变光束的远场光谱移动与光谱开关

Spectral shifts and spectral switches of laser beams with amplitude modulations and phase distortion in the far field

基于瑞利衍射公式,研究了被光阑衍射的具有振幅调制和相位畸变光束的远场光谱变化规律。结果表明,有振幅调制和相位畸变光束在远场也会出现光谱异变现象和光谱开关效应,光阑截断参数、光束的相位畸变参数、振幅调制参数、光强调制参数对远场光谱的跃迁量和光谱开关产生影响。通过数值计算结果分析讨论了光阑截断参数及光束各参数影响远场光谱的规律。

Based on the Raleigh diffraction integral,the spectrum of laser beams with amplitude modulation and phase distortion in the far field are studied.It is shown that,spectral shifts and spectral switches of laser beams with amplitude modulations and phase distortion may also take place in the far field.Spectral shifts and spectral switches depend on truncation parameter,phase distortion parameter,amplitude modulations parameter,and light intensity modulations parameter.Numerical calculation results are given to illuminate how the truncation parameter and each beams parameters.