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Thermal effects such as thermal lens and thermally induced birefringence are critical in solid-state lasers, degrading the beam quality and preventing higher-power operations. The composite lasers, which consist of laser-ion-doped and undoped materials, have been successful in supressing those thermal effects because the heat generated in the doped region can be effectively removed into the undoped...
We have developed a new structured wavelength-conversion device with stacked plates of β-BaB2O4 using the room-temperature-bonding technique. It generates higher ultraviolet power and improves the output beam quality compared with the conventional devices.
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