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首页> 外文期刊>Optics Letters >Cascaded four-wave mixing for broadband tunable laser sideband generation
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Cascaded four-wave mixing for broadband tunable laser sideband generation

机译:级联四波混频用于宽带可调谐激光器边带生成

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摘要

We demonstrate the versatile broadband wavelength tunability of frequency upconverted multicolor cascaded four-wave-mixing (CFWM) signals spanning the continuous wavelength range from UV to near IR in a thin type-I BBO crystal using 35 fs, 800 nm fundamental and chirped IR supercontinuum white light pulses. Two sets of spatially dispersed CFWM laser sidebands are concomitantly generated from two incident pulses as well as their second-harmonic-generation and sum-frequency-generation pulses in a crossing geometry. The tunable cascaded signals with ultrabroad bandwidth can be readily achieved via spatially rotating the BBO crystal to different phase-matching conditions and temporally varying the time delay between the two incident near-IR pulses.
机译:我们展示了薄型I BBO晶体中使用35 fs,800 nm基波和IR红外超连续谱的频率上转换多色级联四波混频(CFWM)信号的通用宽带波长可调性,该信号跨越从紫外到近红外的连续波长范围白光脉冲。两组空间分散的CFWM激光边带是由两个入射脉冲及其交叉几何中的第二谐波产生和总和频率产生的。通过将BBO晶体在空间上旋转到不同的相位匹配条件,并随时间改变两个入射近红外脉冲之间的时间延迟,可以轻松实现具有超宽带宽的可调级联信号。

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