Output characteristics of Pr:YAlO3 and Pr:YAG lasers pumped by high-power GaN laser diodes

Fujita Shogo; Tanaka Hiroki; Kannari Fumihiko

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Output characteristics of Pr:YAlO3 and Pr:YAG lasers pumped by high-power GaN laser diodes

机译：PR的输出特性：YALO3和PR：由大功率GaN激光二极管泵送的YAG激光器

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We investigated whether Pr:YAlO3 and Pr:Y3Al5O12 (YAG) can work as gain media for high-power visible lasers and replace trivalent praseodymium (Pr)-doped fluoride crystals, with particular focus on thermal loading resistivity. Pr:YAlO3 exhibits a high laser gain at 747 nm, and we obtained a maximum output power of 1.2 W and a slope efficiency of 26.7% with high-power GaN laser diode pumping. Excited state absorption and large phonon energy hinder laser oscillation of Pr:YAG at room temperature. We obtained 616 nm laser oscillation of PnYAG at 40 K. Furthermore, we achieved a visible laser with Pr:YAG ceramics for the first time. The maximum output power is similar to 30 mWwith a slope efficiency of similar to 0.7%. (C) 2020 Optical Society of America

机译：我们调查了PR：YALO3和Pr：Y3Al5O12（YAG）可以作为高功率可见激光器的增益介质，并替换三价镨（PR） - 掺杂氟化物晶体，特别关注热负载电阻率。 Pr：YALO3在747nm处表现出高激光增益，我们获得了1.2W的最大输出功率，高功率GaN激光二极管泵送为1.2W的最大输出功率和斜率效率为26.7％。激发的状态吸收和大声头能量阻碍Pr：YAG在室温下的激光振荡。我们在40 k处获得了616 nm激光振荡的pyAg。此外，我们首次使用Pr：YAG陶瓷的可见激光器。最大输出功率类似于30毫克的坡度效率，类似于0.7％。（c）2020美国光学学会

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《Applied optics》 |2020年第17期|共7页
作者
Fujita Shogo; Tanaka Hiroki; Kannari Fumihiko;
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Keio Univ Dept Elect &

Elect Engn Kohoku Ku 3-14-1 Hiyoshi Yokohama Kanagawa 2238522 Japan;

Leibniz Inst Kristallzuchtung IKZ Max Born Str 2 D-12489 Berlin Germany;

Keio Univ Dept Elect &

Elect Engn Kohoku Ku 3-14-1 Hiyoshi Yokohama Kanagawa 2238522 Japan;

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Output characteristics of Pr:YAlO3 and Pr:YAG lasers pumped by high-power GaN laser diodes

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