Measurement of Localized Heating in the Focus of an Optical Trap
Applied Optics, Vol. 39, Issue 19, pp. 3396-3407 (2000)
http://dx.doi.org/10.1364/AO.39.003396
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Abstract
Localized heating in the focus of an optical trap operating in water can result in a temperature rise of several kelvins. We present spatially resolved measurements of the refractive-index distribution induced by the localized heating produced in an optical trap and infer the temperature distribution. We have determined a peak temperature rise in water of 4 K in the focus of a 985-nm-wavelength 55-mW laser beam. The localized heating is directly proportional to power and the absorption coefficient. The temperature distribution is in excellent agreement with a model based on the heat equation.
© 2000 Optical Society of America
OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
Citation
Peter M. Celliers and Jérôme Conia, "Measurement of Localized Heating in the Focus of an Optical Trap," Appl. Opt. 39, 3396-3407 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-19-3396
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