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Stimulated Stokes downconversion in liquid and solid parahydrogen

TitleStimulated Stokes downconversion in liquid and solid parahydrogen
Publication TypeJournal Article
Year of Publication2003
AuthorsMcCall, BJ, Huneycutt, AJ, Saykally, RJ, Lindsay, CM, Oka, T, Fushitani, M, Miyamoto, Y, Momose, T
JournalAPPLIED PHYSICS LETTERS
Volume82
Pagination1350-1352
Date PublishedMAR 3
ISSN0003-6951
Abstract

We report the results of our preliminary investigations into the suitability of condensed-phase parahydrogen as a Raman-shifting medium for infrared cavity ringdown laser absorption spectroscopy. We have observed the conversion of similar to10-ns pulses of 532-nm radiation into first-, second-, and third-order vibrational Stokes radiation in bulk liquid and solid parahydrogen after a single 11-cm pass. Unexpectedly, we find that liquid H-2 yields more efficient conversion than solid H-2 with certain focal geometries, and that in the case of the solid, a collimated or loosely focused pump geometry is more efficient than a tight focus. (C) 2003 American Institute of Physics.

DOI10.1063/1.1556560