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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 21 — Oct. 21, 2013
  • pp: 25316–25323

UV laser interaction with a fluorescent dye solution studied using pulsed digital holography

Eynas Amer, Per Gren, and Mikael Sjödahl  »View Author Affiliations

Optics Express, Vol. 21, Issue 21, pp. 25316-25323 (2013)

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A frequency tripled Q-switched Nd-YAG laser (wavelength 355 nm, pulse duration 12 ns) has been used to pump Coumarin 153 dye solved in ethanol. Simultaneously, a frequency doubled pulse (532 nm) from the same laser is used to probe the solvent perpendicularly resulting in a gain through stimulated laser induced fluorescence (LIF) emission. The resulting gain of the probe beam is recorded using digital holography by blending it with a reference beam on the detector. Two digital holograms without and with the pump beam were recorded. Intensity maps were calculated from the recorded digital holograms and used to calculate the gain of the probe beam due to the stimulated LIF. In addition numerical data of the local temperature rise was calculated from the corresponding phase maps using Radon inversion. It was concluded that about 15% of the pump beam energy is transferred to the dye solution as heat while the rest is consumed in the radiative process. The results show that pulsed digital holography is a promising technique for quantitative study of fluorescent species.

© 2013 Optical Society of America

OCIS Codes
(300.2530) Spectroscopy : Fluorescence, laser-induced
(090.1995) Holography : Digital holography

ToC Category:

Original Manuscript: July 10, 2013
Revised Manuscript: September 20, 2013
Manuscript Accepted: October 3, 2013
Published: October 16, 2013

Eynas Amer, Per Gren, and Mikael Sjödahl, "UV laser interaction with a fluorescent dye solution studied using pulsed digital holography," Opt. Express 21, 25316-25323 (2013)

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