๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

A picosecond cars study of librons in naphthalene

โœ Scribed by Koos Duppen; Ben M.M. Hesp; Douwe A. Wiersma

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
304 KB
Volume
79
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

Picosecond delayed CARS experunents have been used to measure the hfetunes of the lcwcr energy iibrons III naphthalene At 15 K llfetimes of 225 + 10 ps for the Bg liiron (57 5 cm-') and 141 f 10 ps for the Ag hiron (69 cm-') are obtamed. From the temperature dependence of the liiron hfetunes we conclude that cubtc anharmomc phonon mteractlons are responsible for the libron decay. The importance of phonon wave vector phase-matchmg m the decay process 1s tnferred from the much haher effiaency of phonon up-than down-conversion Fmally the possible role of stunulated BriJloum suttertng m del&ed CARS IS dlscksed

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