Abstract

We report the first observations, to our knowledge, of lasing emission from a single, evaporating, layered, micrometer-sized droplet. The droplet consists of an ~7.9-μm-radius glass core covered by a liquid shell of an initial 3 × 10⁻⁴ M Rhodamine 6G dye-doped glycerin/water solution. After pumping by a doubled (532 nm) Nd:YAG pulsed laser, droplet lasing occurs over a range of shell thicknesses from ~14.5 to ~0.4 μm. At the smallest shell thickness, a dramatic increase in both the number and intensity of the lasing peaks occurs, in addition to a large (>40-nm) blue shift in the spectral bandwidth of lasing emission. A discussion of possible enhancement mechanisms responsible for these novel findings is given.

© 1993 Optical Society of America

Effects of submicrometer-sized particles on microdroplet lasing

R. L. Armstrong, J.-G. Xie, T. E. Ruekgauer, J. Gu, and R. G. Pinnick
Opt. Lett. 18(2) 119-121 (1993)

Suppression of lasing by stimulated Raman scattering in microdroplets

Alfred S. Kwok and Richard K. Chang
Opt. Lett. 18(19) 1597-1599 (1993)

Morphology-dependent dye lasing from a single microdroplet with double-layered dye doping

Hiroshi Taniguchi, Humihiro Tomisawa, and Sarjono
Opt. Lett. 19(6) 366-368 (1994)

Suppression of stimulated Raman scattering from microdroplets by seeding with nanometer-sized latex particles

J.-G. Xie, T. E. Ruekgauer, R. L. Armstrong, and R. G. Pinnick
Opt. Lett. 18(5) 340-342 (1993)

Energy-transfer-assisted lasing from microdroplets seeded with fluorescent sol

R. L. Armstrong, J.-G. Xie, T. E. Ruekgauer, and R. G. Pinnick
Opt. Lett. 17(13) 943-945 (1992)