Demonstrates enhanced output power and efficiency in Yb:YAG crystal lasers, suggesting improved technology for laser applications.
We demonstrate a high-power Innoslab amplifier based on a multi-segmented composite Yb:YAG crystal.A systematic comparison was performed of the laser amplification output performance of the multi-segmented and conventional Yb:YAG crystals to demonstrate the feasibility of using gain media with multiple doping concentrations in Innoslab laser amplifiers.We achieved an amplified output of 245 W based on the multi-segmented composite Yb:YAG crystal Innoslab amplifier, with a beam quality of M 2 = 1.21 1.25 and an optical-to-optical efficiency of 38.9%.Thanks to the unique doping structure of the composite crystal, compared to homogeneous dopant crystals, the average output power, optical-to-optical efficiency, and beam quality were significantly improved.Exceptional output power stability with an RMS fluctuation of 0.11% and pointing stability of ~7.5 rad were achieved.
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Huang et al. (2026) studied this question.
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