Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications (BUPT), Ministry of Education, P.O. Box 55, Beijing 100876, China.
Opt Lett. 2010 Dec 1;35(23):4042-4. doi: 10.1364/OL.35.004042.
The trapping of Cherenkov radiation by Raman solitons is an important process during supercontinuum generation and has been demonstrated as an effective way to extend the Cherenkov-radiation-based wavelength conversion toward the visible band. In this Letter we demonstrate that the existence of the self-steepening effect increases the energy of the Cherenkov radiation during the trap while reducing its frequency blueshift. The frequency and energy evolutions of Cherenkov radiation are analytically studied, and the predictions are consistent with the simulations based on the generalized nonlinear Schrödinger equation.
拉曼孤子对切伦科夫辐射的俘获是超连续谱产生过程中的一个重要过程，已被证明是将基于切伦科夫辐射的波长转换扩展到可见波段的有效方法。在这封信中，我们证明了自陡峭效应的存在会增加俘获过程中切伦科夫辐射的能量，同时减小其频率蓝移。我们对切伦科夫辐射的频率和能量演化进行了分析研究，预测结果与基于广义非线性薛定谔方程的模拟结果一致。
