TUNABLE OPTICAL-DETECTION AND GENERATION OF TERAHERTZ PHONONS IN CAF2 AND SRF2

被引：27

作者：

EISFELD, W

RENK, KF

机构：

[1] Institut für Angewandte Physik, Universität Regensburg

来源：

APPLIED PHYSICS LETTERS | 1979年 / 34卷 / 08期

关键词：

D O I：

10.1063/1.90855

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A new method for tunable detection and generation of terahertz phonons is reported. It is based on our observation that the lowest energy level of excited Eu2+ ions in CaF2 and SrF2 crystals can be split by uniaxial stress into two levels with a variable separation up to 2.4 THz. Phonons are generated by one-phonon relaxation between these levels and detected by phonon-induced fluorescence radiation from the upper level. The detector is applied to study the spectral distribution of phonons generated by the heat-pulse technique.

引用

页码：481 / 483

页数：3

共 17 条

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