【摘 要】
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We demonstrate the spectroscopic and laser performance before and after 100 Mrad gamma-ray irradiation on an Er,Pr:GYSGG crystal grown by the Czochralski method
【机 构】
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The Key Laboratory of Photonic Devices and Materials, Anhui Province, Anhui Institute of Optics and
论文部分内容阅读
We demonstrate the spectroscopic and laser performance before and after 100 Mrad gamma-ray irradiation on an Er,Pr:GYSGG crystal grown by the Czochralski method.The additional absorption of Er,Pr∶GYSGG crystal is close to zero in the 968 nm pumping and 2.7-3 μm laser wavelength regions.The lifetimes of the upper and lower levels show faint decreases after gamma-ray irradiation.The maximum output powers of 542 and 526 mW with the slope efficiencies of 17.7％ and 17.0％ are obtained,respectively,on the GYSGG/Er,Pr∶GYSGG composite crystal before and after the gammaray irradiation.These results suggest that Er,Pr∶GYSGG crystal as a laser gain medium possesses a distinguished antiradiation ability for application in space and radiant environments.
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