基于冲击波作用于光子晶体实现光学频率变换方法的分析

Analysis on the Optical Frequency Conversion Technology Based on Photonic Crystals Compressed by Shock Wave

分析了光子晶体实现光学频率变化的方法。阐述了光子晶体光学频率变换的原理,用软件仿真了冲击波作用光子晶体的折射率变化和带隙变化,分析了冲击波速度和冲击波作用光子晶体时间的长短对光学频率变化的影响,结论表明,冲击波速度越大光学频率的变化量越大,冲击波作用光子晶体的时间越长光学频率的变化量越大。由于利用光子晶体的禁带特性,能够对落入光子晶体禁带中的光波实现全反射,故频率转换效率很高。此种方法在近几年发展起来的可调谐激光器有重要的应用,也是光子晶体一个新的研究领域。

The optical frequency shift technology based on photonic crystals is studied. The basic princi optical frequency shift is summarized firstly, the transformation of dielectric constants and band gap of pie of shock wave compressed photonic crystals are simulated by software, then, the influence of optical frequency shift, is correctly analyzed that is arised by shock wave velocity and functionary time. Finally, the conclusion indicates that the larger velocity of shock wave and longer functionary time bring about a bigger transformation. Frequency conversation efficiency is special high, because omni-directional can reflect in band gap region of photonic crystals. The method has important application in the development of tunable laser in recent years and a new research field of photonic crystals is also advanced.