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Conferences > NLO > 2000 > WA > WA5

High Power Optical Parametric Oscillators for Optical Refrigeration in Solids

M. Sheik-Bahae, C. W. Hoyt, M. Ebrahimzadeh, R. I. Epstein, and B. C. Edwards

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Abstract

A high power singly resonant optical parametric oscillator based on periodically polled LiNbO3 (PPLN) is developed to produce >6 W cw signal power tunable in the λ= 1.7-2.1 μm range. This OPO was then used to observe net optical refrigeration in a thulium-doped solid for the first time. The OPO was synchronously pumped by a cw-modelocked (70 ps FWHM) Nd:YAG laser with Pave=18 W. The observed slope efficiency is more than 42%.

© 2000 Optical Society of America

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