在掺碲的二硫化锡磷（Sn2P2S6:Te）中实现1.55微米电信波长的高速光折射。

High-speed photorefraction at telecommunication wavelength 1.55 microm in Sn2P2S6:Te.

作者信息

Mosimann Roger, Marty Patrick, Bach Tobias, Juvalta Flurin, Jazbinsek Mojca, Günter Peter, Grabar Alexander A

机构信息

Nonlinear Optics Laboratory, Swiss Federal Institute of Technology, ETH Zurich 8093 Zurich, Switzerland.

出版信息

Opt Lett. 2007 Nov 15;32(22):3230-2. doi: 10.1364/ol.32.003230.

DOI:10.1364/ol.32.003230

PMID:18026263

Abstract

We demonstrated for what is the first time to our knowledge photorefractive two-wave mixing in a bulk ferroelectric crystal using cw light at the telecommunication wavelength 1.55 microm. In the Te-doped ferroelectric semiconductor Sn2P2S6 with absorption constant <0.1 cm(-1) at 1.55 microm, grating recording times of 10 ms and a two-beam coupling gain of 2.8 cm(-1) have been measured at 350 mW power (intensity 440 W/cm(2)) without a necessity to apply an external electric field. With a moving grating technique, a maximal gain of 6.0 cm(-1) has been obtained.

摘要

据我们所知，我们首次展示了在块状铁电晶体中利用波长为1.55微米的连续波光进行光折变二波混频。在掺碲的铁电半导体Sn2P2S6中，在1.55微米处的吸收常数<0.1 cm(-1)，在350毫瓦功率（强度440 W/cm(2)）下，无需施加外部电场，已测得光栅记录时间为10毫秒，两束光耦合增益为2.8 cm(-1)。使用移动光栅技术，已获得最大增益6.0 cm(-1)。