Femtosecond optical pulse generation using quasi-velocity-matched electrooptic phase modulator
Femtosecond optical pulse generation using quasi-velocity-matched electrooptic phase modulator
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DOI：
10.1109/2944.571749
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发表时间：
1996-09-01
影响因子：
4.9
通讯作者：
Kobayashi, T
中科院分区：
文献类型：
--
作者：
Kim, DS;Arisawa, M;Kobayashi, T
采用啁啾压缩方法，利用高效电光相位调制器，从连续窄线宽激光器中产生飞秒超短光脉冲，在产生飞秒脉冲之前，采用准速度匹配技术，制作了一种高调制指数电光调制器。在脉冲产生实验中，电光调制器和光栅对a的负群延迟色散元件用于514.5毫米连续Ar激光器。实验结果表明，该电光脉冲压缩方法不仅适用于负群延迟色散元件，也适用于正群延迟色散元件，其边带光谱的半高宽为2.0 THz，并成功地获得了重复频率为16.25 GHz、脉宽为560 fs的光脉冲。
Ultrashort optical pulses in the femtosecond range were generated from a continuous-wave (CW) narrow linewidth laser by using the chirping compression method with a highly efficient electrooptic phase modulator.Before the femtosecond pulse generation, a high modulation index electrooptic modulator specially designed was fabricated by employing the quasi-velocity-matching. In the pulse generation experiment, the electrooptic modulator and a grating pair a's a negative group delay dispersion element were used for a 514.5-mm CW Ar laser. As a result, the sideband spectrum of 2.0 THz full-width half-maximum (FWHM) was produced and 560-fs optical pulses with 16.25-GHz repetition rate was successfully obtained.For this electrooptic pulse compression method is applicable to the negative group delay dispersion element as well as the positive group delay dispersion.