Spin-dependent terahertz nonlinearities at inter-valence-band absorption in p-Ge

被引：2
|
作者：
Ganichev, SD
Ketterl, H [1 ]
Beregulin, EV
Prettl, W
机构：
[1] Univ Regensburg, Inst Expt & Angew Phys, D-93040 Regensburg, Germany
[2] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia
来源：
PHYSICA B-CONDENSED MATTER | 1999年 / 272卷 / 1-4期
关键词：
far-infrared; multi-photon absorption; saturation; spin;
D O I：
10.1016/S0921-4526(99)00321-X
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Far-infrared absorption and photon drag effect have been investigated in p-type germanium as a function of intensity of a high-power pulsed far-infrared molecular laser. Optical transmission shows saturation independent of the state of polarization of the radiation whereas in the photon drag effect a pronounced linear-circular dichroism occurs. Linear-circular dichroism is caused by spin-selective excitations as a result of selection rules and, equally important, multiphoton transitions with a rate comparable to one-photon absorption. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：464 / 466
页数：3
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