Ultrashort polarization-tailored bichromatic fields
Ultrashort polarization-tailored bichromatic fields
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DOI：
10.1080/09500340.2016.1271151
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发表时间：
2017-01-01
影响因子：
1.3
通讯作者：
Wollenhaupt, Matthias
中科院分区：
文献类型：
--
作者：
Kerbstadt, Stefanie;Englert, Lars;Wollenhaupt, Matthias
提出了一种产生超短偏振双色激光场的新概念。该方案利用基于液晶空间光调制器的4f偏振脉冲整形器对飞秒激光脉冲进行独立的幅度和相位调制。通过在傅立叶平面中选择常规（p）或复合（p-s）偏振器，整形器设置使得能够产生平行线性和正交线性偏振双色场。在装置后面附加使用λ/4波片产生同向旋转和反向旋转的圆偏振双色场。该方案允许独立地控制输出场的光谱幅度、相位和偏振分布，提供了双色波形的巨大通用性。
We present a novel concept for the generation of ultrashort polarization-shaped bichromatic laser fields. The scheme utilizes a 4f polarization pulse shaper based on a liquid crystal spatial light modulator for independent amplitude and phase modulation of femtosecond laser pulses. By choice of either a conventional (p) or a composite (p-s) polarizer in the Fourier plane, the shaper setup enables the generation of parallel linearly and orthogonal linearly polarized bichromatic fields. Additional use of lambda/4 wave plate behind the setup yields co-rotating and counter-rotating circularly polarized bichromatic fields. The scheme allows to independently control the spectral amplitude, phase and polarization profile of the output fields, offering an enormous versatility of bichromatic waveforms.