CHARACTERIZATION OF PHOTOREFRACTIVE CDTE-V - HIGH 2-WAVE MIXING GAIN WITH AN OPTIMUM LOW-FREQUENCY PERIODIC EXTERNAL ELECTRIC-FIELD

被引：28

作者：

MOISAN, JY ^{[1
]}

WOLFFER, N ^{[1
]}

MOINE, O ^{[1
]}

GRAVEY, P ^{[1
]}

MARTEL, G ^{[1
]}

AOUDIA, A ^{[1
]}

REPKA, E ^{[1
]}

MARFAING, Y ^{[1
]}

TRIBOULET, R ^{[1
]}

机构：

[1] CNRS,LAB PHYS SOLIDES BELLEVUE,F-92195 MEUDON,FRANCE

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1994年 / 11卷 / 09期

关键词：

D O I：

10.1364/JOSAB.11.001655

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present two-wave mixing results obtained with CdTe:V photorefractive crystals under an external dc or low-frequency square-shaped periodic electric field. The majority photorefractive carriers are holes at 1.32 and 1.54 mum, whereas electrons dominate slightly at 1.048 mum. At this wavelength an intensity-dependent resonant gain enhancement is observed in the presence of a dc field. The effective trap densities are near 10(15) cm-3. The highest gains (to as high as 11 cm-1 for a field amplitude of 15 kV/cm at 1.32 mum) are obtained with a square-shaped periodic field at an optimum frequency F0. The dependence of F0 on the different experimental parameters is presented. A two-level model in which the secondary level has a thermal emission rate much larger than the principal one qualitatively describes this nonstandard frequency behavior.

引用

页码：1655 / 1667

页数：13

共 29 条

[1]

Bremond G., 1993, COMMUNICATION

[2] PHOTOREFRACTIVE PROPERTIES OF DOPED CADMIUM TELLURIDE [J].