Controlled shaping of ultrafast electric field transients in the mid-infrared spectral range.
Controlled shaping of ultrafast electric field transients in the mid-infrared spectral range.
复制标题
中红外光谱范围内超快电场瞬变的受控整形。
作者：
F. Eickemeyer;R. Kaindl;M. Woerner;T. Elsaesser;A. Weiner
我们实验证明飞秒中红外脉冲的振幅和相位整形的范围内为中心约14妈妈。利用液晶调制器对近红外脉冲进行整形，在GaSe晶体中进行相位匹配差频混频，产生了具有定制光学相位的单脉冲和锁相双脉冲。电场瞬态直接测量自由空间电光采样，产生的脉冲持续时间为200-300 fs。我们的数据是在良好的协议与模型，描述相位匹配的光学整流。
We experimentally demonstrate amplitude and phase shaping of femtosecond mid-infrared pulses in a range centered about 14 mum . Single pulses with a tailored optical phase and phase-locked double pulses are generated by phase-matched difference-frequency mixing in a GaSe crystal of near-infrared pulses shaped with a liquid-crystal modulator. The electric field transients are directly measured by free-space electro-optic sampling, yielding pulse durations of 200-300 fs. Our data are in good agreement with a model that describes phase-matched optical rectification.