SPACE-CHARGE FIELD FEEDBACK EFFECT ON CARRIER TRANSPORT IN PHOTOREFRACTIVE CDTEV

被引：9
|
作者：
JARASIUNAS, K [1 ]
DELAYE, P [1 ]
LAUNAY, JC [1 ]
ROOSEN, G [1 ]
机构：
[1] POLE RECH AQUITAIN MAT ESPACE,F-33165 ST MEDARD,FRANCE
来源：
OPTICS COMMUNICATIONS | 1992年 / 93卷 / 1-2期
关键词：
D O I：
10.1016/0030-4018(92)90129-F
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Laser induced picosecond transient gratings are used to study carrier transport via free carrier and photorefractive nonlinearities. Carrier lifetime (tau(R) = 1.7 ns), hole and ambipolar mobilities (mu(h) = 85 cm2 V-1 s-1 and mu(a) = 146 cm2 V-1 s-1) are measured directly, and electron mobility equal to 520 cm2 V-1 s-1 is calculated for CdTe:V at an impurity concentration of 10(19) cm-3. Feed-back effect of light induced space charge electric field is found responsible for diffracted beam intensity modulation during the grating recording and its decay.
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页码：59 / 65
页数：7
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