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Thermal gratings and coherent phonons generated by periodic optical excitation in nematic MBBA

โœ Scribed by K. Ishikawa; Y. Takahashi; Y. Fukuda; T. Yabuzaki; T. Hashi


Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
509 KB
Volume
78
Category
Article
ISSN
0030-4018

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Excitation of the coherent optical phono
โœ S. A. Akhmanov; N. I. Koroteev; A. I. Kholodnykh ๐Ÿ“‚ Article ๐Ÿ“… 1974 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 458 KB

## Abstract The results of an experimental investigation of the twofold degenerate vibrations in calcite (__E__~__g__~โ€type; phonon frequency ฮฉ~__E__~/2ฯ€__c__ = 721 cm^โˆ’1^) by means of active spectroscopy method, including a new modification of this method are reported. Beating of a biharmonic pump