Intracavity transient absorption effect on lasing of a dye-doped microspherical particle

Kenji Kamada*, Keiji Sasaki, Hiroshi Masuhara

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The effect of transient absorption on a lasing process occurring in a spherical particle was studied by use of a microspectroscopy system combined with a laser trapping technique. Stimulated emission of rhodamine B within a poly (methyl methacrylate) latex particle was greatly attenuated by transient absorption of 9,10-diphenylanthracene simultaneously doped in the particle. Compared with the absorption loss caused by a single path through the particle, the change in the lasing emission intensity was amplified by the optical resonance in a spherical microparticle by two orders of magnitude. The linearity of the emission intensity change with the intracavity transient absorption was also discussed. A new, sensitive method of transient absorption measurement based on the resonance effect is proposed for elucidating picosecond dynamics of a single microparticle.

Original languageEnglish
Pages (from-to)559-563
Number of pages5
JournalChemical Physics Letters
Volume229
Issue number4-5
DOIs
StatePublished - 4 Nov 1994

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