DETERMINATION OF INTERVALLEY SCATTERING TIME IN GERMANIUM BY SUBPICOSECOND TIME-RESOLVED RAMAN-SPECTROSCOPY

被引：32

作者：

TANAKA, K ^{[1
]}

OHTAKE, H ^{[1
]}

SUEMOTO, T ^{[1
]}

机构：

[1] SCI UNIV TOKYO,FAC SCI,DEPT APPL PHYS,NODA,CHIBA 278,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.71.1935

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Time-resolved Raman scattering measurements are made by using 110 fs laser pulses in germanium at the initial carrier density of 3 x 10(18) cm-3. Intensity build-up is clearly observed for the Raman scattering due to photoexcited electrons in L valleys and is quantitatively analyzed in terms of the theory on the electronic light scattering from a multicomponent electron gas. We show that photoexcited electrons initially created in the GAMMA valley are scattered into L valleys with a time constant of 1.2+/-0.1 ps.

引用

页码：1935 / 1938

页数：4

共 14 条

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