PHONON FREQUENCY SPECTRA OF TRAVELING ACOUSTOELECTRIC DOMAINS IN CDS

被引：48

作者：

HAKKI, BW

DIXON, RW

机构：

[1] Bell Telephone Laboratories, Inc., Murray Hill

来源：

APPLIED PHYSICS LETTERS | 1969年 / 14卷 / 06期

关键词：

D O I：

10.1063/1.1652767

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optical beam probing using Bragg diffraction from traveling acoustic domains in CdS has revealed a direct correlation between the frequency of maximum phonon intensity and the total integrated acoustic intensity. At the point of initiation of the acoustic domain the frequency of maximum phonon intensity was equal to that for maximum small signal gain, but as the domain propagated towards the anode the total acoustic intensity T increased and the frequency fm of maximum phonon intensity decreased according to the relation T ∞ fm-4. After a sufficient distance of travel the acoustic intensity saturated and the peak phonon frequency became invariant. It is suggested that the drop in phonon frequency and its correlation with total phonon intensity are related to the trapping of free carriers by acoustic phonons. © 1969 The American Institute of Physics.

引用

页码：185 / +

页数：1

共 11 条

[1] ACOUSTIC BEAM PROBING USING OPTICAL TECHNIQUES [J].