Intracavity transient absorption effect on lasing of a dye-doped microspherical particle
✍ Scribed by Kenji Kamada; Keiji Sasaki; Hiroshi Masuhara
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 476 KB
- Volume
- 229
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
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(methy1 methacrylate) latex particle was greatly attenuated by transient absorption of 9, lo-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.