Optimizing and calibrating a mode-mismatched thermal lens experiment for low absorption measurement
JOSA B, Vol. 23, Issue 7, pp. 1408-1413 (2006)
http://dx.doi.org/10.1364/JOSAB.23.001408
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Abstract
We describe a calibrated two-beam mode-mismatched thermal lens experiment aimed at determination of the absorption coefficient and the photothermal parameters of a nearly transparent material. The use of a collimated probe beam in the presence of a focused excitation beam optimizes the thermal lens experiment. The signal becomes independent from the Rayleigh parameters and waist positions of the beams. We apply this method to determine the absolute value of the thermal diffusivity and absorption coefficient of distilled water at
© 2006 Optical Society of America
OCIS Codes
(190.4870) Nonlinear optics : Photothermal effects
(190.5940) Nonlinear optics : Self-action effects
(350.5340) Other areas of optics : Photothermal effects
(350.6830) Other areas of optics : Thermal lensing
ToC Category:
Physical Optics
History
Original Manuscript: September 1, 2005
Revised Manuscript: December 16, 2005
Manuscript Accepted: January 11, 2005
Citation
Arístides Marcano, Humberto Cabrera, Mayamaru Guerra, Renato A. Cruz, Carlos Jacinto, and Tomaz Catunda, "Optimizing and calibrating a mode-mismatched thermal lens experiment for low absorption measurement," J. Opt. Soc. Am. B 23, 1408-1413 (2006)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-23-7-1408
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