Applied Physics B

, Volume 75, Issue 1, pp 85–90

Heavy-water-based solutions of rhodamine dyes: photophysical properties and laser operation

Authors

  • S. Sinha
    • Laser and Plasma Tech. Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
  • A.K. Ray
    • Laser and Plasma Tech. Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
  • S. Kundu
    • Laser and Plasma Tech. Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
  • S. Sasikumar
    • Laser and Plasma Tech. Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
  • K. Dasgupta
    • Laser and Plasma Tech. Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
Article

DOI: 10.1007/s00340-002-0932-6

Cite this article as:
Sinha, S., Ray, A., Kundu, S. et al. Appl Phys B (2002) 75: 85. doi:10.1007/s00340-002-0932-6
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Abstract.

Photophysical properties of heavy-water-based rhodamine dye solutions have been investigated, with a view to assess the suitability of heavy water as a solvent for high-power, high-repetition-rate dye lasers and amplifiers. We have measured the quantum yield of fluorescence of the commonly used dyes rhodamine-6G, rhodamine-B and kiton-red, dissolved in heavy water, ethanol and normal water. The performance of a heavy-water-based pulsed rhodamine-6G dye laser has been investigated in broadband, as well as in narrowband wavelength-tunable resonator configurations, yielding laser efficiencies comparable to those achieved with ethanolic solutions of the same dye. We have also studied the thermo-optic properties of normal and heavy water, using the Z-scan technique. Finally, photodegradation rates for laser dyes have been compared in heavy water, normal water and ethanol. Our results establish heavy water as a solvent superior to both ethanol and normal water, on account of the lower thermo-optic effects and the higher photostability of rhodamine dyes when dissolved in heavy water.

PACS: 42.55.Mv; 42.65.Jx; 61.80.Ba

Copyright information

© Springer-Verlag 2002