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8 February 2011 Mach-Zehnder interferometric measurement of laser heating/cooling in Yb3+: YAG
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Proceedings Volume 7951, Laser Refrigeration of Solids IV; 79510I (2011)
Event: SPIE OPTO, 2011, San Francisco, California, United States
A 915 nm T:Sapphire laser was used to excite luminescence from Yb3+ doped YAG crystal. The excited ions undergo nonradiative relaxation followed by strong emission at 1030 nm. The heating produced by the nonradiative relaxation increases the sample temperature. A Mach-Zehnder interferometer was setup with 514.5 nm Ar+ laser beam. Laser heating causes the interferometer fringes to move. A mathematical formula was developed to estimate the change in sample temperature from the fringe count. When 300mW Ti:Sapphire laser beam was focused through the YAG:Yb3+crystal its temperature increased by 6.9°C. This technique works equally well to measure the solid sample temperature changes in laser cooling studies.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Carlton Farley III and B. Rami Reddi "Mach-Zehnder interferometric measurement of laser heating/cooling in Yb3+: YAG", Proc. SPIE 7951, Laser Refrigeration of Solids IV, 79510I (8 February 2011);

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