Research Of Diode-Pumped Cryogenic Yb:Yag Amplification At 10hz Repetition Rate
HIGH POWER LASERS FOR FUSION RESEARCH(2011)
Abstract
The spectrum characteristic of cryogenic has been investigated and the cryogenic Yb:YAG amplification has been developing. As the temperature decreases, the stimulated emission cross section increasing rapidly with the center wavelength becoming short and the gain spectrum bandwidth narrowed. A diode-pumped cryogenic Yb: YAG regenerative amplifier at 10Hz repetition rate has been carrying out. Temperature of the Yb: YAG crystal has been controlled between 185K and 190K. A similar to 100 pJ optical pulse with 10 ns time duration and 10 Hz repetition rate at 1030 nm wavelength is inject into the regenerative amplifier. similar to 10.5 mJ output energy at 10 Hz from the regenerative amplifier with a square-pulse distortion of similar to 1.5 and an output-pulse-energy fluctuation of 7% was achieved.
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Key words
regenerative amplifier, cryogenic Yb:YAG, diode pumped, Gain Spectrum, Optical cavity, Output Energy, output-pulse-energy fluctuation, SPD
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