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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 10 — May. 15, 2006
  • pp: 4374–4379

Levitated droplet dye laser

H. Azzouz, L. Alkhafadiji, S. Balslev, J. Johansson, N. A. Mortensen, S. Nilsson, and A. Kristensen  »View Author Affiliations

Optics Express, Vol. 14, Issue 10, pp. 4374-4379 (2006)

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We present the first observation, to our knowledge, of lasing from a levitated, dye droplet. The levitated droplets are created by computer controlled pico-liter dispensing into one of the nodes of a standing ultrasonic wave (100 kHz), where the droplet is trapped. The free hanging droplet forms a high quality optical resonator. Our 750 nL lasing droplets consist of Rhodamine 6G dissolved in ethylene glycol, at a concentration of 0.02 M. The droplets are optically pumped at 532 nm light from a pulsed, frequency doubled Nd:YAG laser, and the dye laser emission is analyzed by a fixed grating spectrometer. With this setup we have achieved reproducible lasing spectra in the visible wavelength range from 610 nm to 650 nm. The levitated droplet technique has previously successfully been applied for a variety of bio-analytical applications at single cell level. In combination with the lasing droplets, the capability of this high precision setup has potential applications within highly sensitive intra-cavity absorbance detection.

© 2006 Optical Society of America

OCIS Codes
(140.2050) Lasers and laser optics : Dye lasers
(140.4780) Lasers and laser optics : Optical resonators
(140.7300) Lasers and laser optics : Visible lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: March 23, 2006
Revised Manuscript: April 24, 2006
Manuscript Accepted: April 27, 2006
Published: May 15, 2006

Virtual Issues
Vol. 1, Iss. 6 Virtual Journal for Biomedical Optics

H. Azzouz, L. Alkhafadiji, S. Balslev, J. Johansson, N. A. Mortensen, S. Nilsson, and A. Kristensen, "Levitated droplet dye laser," Opt. Express 14, 4374-4379 (2006)

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