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Optics Letters


  • Vol. 14, Iss. 4 — Feb. 15, 1989
  • pp: 214–216

Time-resolved spectroscopy of laser emission from dye-doped droplets

A. Biswas, H. Latifi, R. L. Armstrong, and R. G. Pinnick  »View Author Affiliations

Optics Letters, Vol. 14, Issue 4, pp. 214-216 (1989)

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Micrometer-sized droplets of Rhodamine 6G solution in water and ethanol are irradiated by high-intensity nanosecond pulses from a frequency-doubled Nd:YAG laser. Coupling of the spontaneous fluorescence emission with natural resonant modes of the spherical droplets results in stimulated emission, with each droplet behaving like a laser cavity. Spectral observations suggest that droplet lasing emission is supported by resonances of a single mode order. The emission exhibits faster rise times and is shorter lived than corresponding bulk-liquid fluorescence. Lasing in droplets is generally initiated almost simultaneously with elastic scattering, unlike stimulated Raman scattering, which is significantly delayed.

© 1989 Optical Society of America

Original Manuscript: August 1, 1988
Manuscript Accepted: November 30, 1988
Published: February 15, 1989

A. Biswas, R. G. Pinnick, H. Latifi, and R. L. Armstrong, "Time-resolved spectroscopy of laser emission from dye-doped droplets," Opt. Lett. 14, 214-216 (1989)

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