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Boosting few-cycle soliton self-frequency shift using negative prechirp.
Optics Express ( IF 3.8 ) Pub Date : 2020-02-03 , DOI: 10.1364/oe.383014
Yuval Rosenberg , Jonathan Drori , David Bermudez , Ulf Leonhardt

Soliton self-frequency shifting of light pulses in fibers is used for versatile tunable light sources. Few-cycle pulses of high soliton number offer unique advantages, in particular the rate of Raman frequency shift is extremely fast. However, their dynamics is complicated, which makes the optimization of the frequency shifting difficult and sometimes counter-intuitive. We performed a systematic experimental study of the effects of initial prechirp for different pulse energies (for two different fibers). We found that a negative prechirp around C=-0.75 is the most effective (C being the chirp parameter). With such prechirping we managed to cross the severe OH absorption bands of nonlinear photonic crystal fibers. The mechanism behind the effectiveness of the prechirp appears to be the power distribution between the products of soliton fission.

中文翻译:

使用负预chi增强几周期孤子自频移。

光纤中光脉冲的孤子自频移用于多功能可调光源。高孤子数的几个周期脉冲具有独特的优势,特别是拉曼频移速率非常快。然而,它们的动力学很复杂,这使得移频的优化困难并且有时违反直觉。我们对不同脉冲能量(对于两种不同的光纤)的初始线性调频脉冲的影响进行了系统的实验研究。我们发现C = -0.75附近的负预线性调频最有效(C是线性调频参数)。通过这种预调频,我们设法克服了非线性光子晶体光纤的严重OH吸收带。预chi的有效性背后的机制似乎是孤子裂变产物之间的功率分布。
更新日期:2020-02-03
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