利用周期极化铌酸锂中的光折变光栅实现分布式反馈光学参量振荡。

Distributed-feedback optical parametric oscillation by use of a photorefractive grating in periodically poled lithium niobate.

作者信息

Chiang A C, Lin Y Y, Wang T D, Huang Y C, Shy J T

出版信息

Opt Lett. 2002;27(20):1815-7. doi: 10.1364/ol.27.001815.

DOI:10.1364/ol.27.001815

Abstract

We report a demonstration of distributed-feedback (DFB) optical parametric oscillation (OPO) by writing photorefractive gratings in periodically poled lithium niobate (PPLN). The photorefractive DFB structures were fabricated by illumination of PPLN with UV light through a photomask and by writing of PPLN with UV-light gated interfering laser beams at 532 nm. Evidence of OPO was observed from the spectral narrowing at the 1438.8- and the 619.3-nm signal wavelengths from 1064- and 532-nm-pumped PPLN crystals with the DFB grating periods phase matched to the 4084.5- and 3774-nm idler wavelengths, respectively.

摘要

我们报告了通过在周期性极化铌酸锂（PPLN）中写入光折变光栅来实现分布反馈（DFB）光学参量振荡（OPO）的演示。光折变DFB结构是通过用紫外光透过光掩模照射PPLN以及用532 nm的紫外光门控干涉激光束写入PPLN来制造的。在具有与4084.5 nm和3774 nm闲频波长分别相位匹配的DFB光栅周期的、由1064 nm和532 nm泵浦的PPLN晶体中，在1438.8 nm和619.3 nm信号波长处观察到光谱变窄，这证明了OPO的存在。