TY - JOUR
T1 - Lasing and thermal characteristics of Yb:YAG/YAG composite with atomic diffusion bonding
AU - Nagisetty, Siva Sankar
AU - Severova, Patricie
AU - Miura, Taisuke
AU - Smrž, Martin
AU - Kon, Hitoe
AU - Uomoto, Miyuki
AU - Shimatsu, Takehito
AU - Kawasaki, Masato
AU - Higashiguchi, Takeshi
AU - Endo, Akira
AU - Mocek, Tomáš
N1 - Funding Information:
This research was supported by the state budget of the Czech Republic (projects LM2015086, LO1602) and by the Czech Academy of Sciences (project JSPS 16-13).
Publisher Copyright:
© 2016 Astro Ltd.
PY - 2017/1
Y1 - 2017/1
N2 - We demonstrated the laser performance of an Yb:YAG/YAG composite ceramic laser medium mounted on an aluminium heatsink via atomic diffusion bonding (ADB) technique using nanocrystalline metal films at room temperature in air. The surface temperature rise of the ADB bonded laser medium was linear with 57 °C lower than that of the commercially available soldered Yb:YAG thin disk at the pump power of 280 W. Moreover, the ADB disk was pumped 1.5 times higher (7.3 kW cm-2) than the typical damage threshold of the soldered disk without any sign of damage. The undoped capping may be effective for the suppression of ASE heating; however, according to the in situ OPD measurement it induces strong thermal lensing. The CW laser output power of 177 W was obtained at the pump power of 450 W with the optical-to-optical efficiency of 40% using V-shape cavity.
AB - We demonstrated the laser performance of an Yb:YAG/YAG composite ceramic laser medium mounted on an aluminium heatsink via atomic diffusion bonding (ADB) technique using nanocrystalline metal films at room temperature in air. The surface temperature rise of the ADB bonded laser medium was linear with 57 °C lower than that of the commercially available soldered Yb:YAG thin disk at the pump power of 280 W. Moreover, the ADB disk was pumped 1.5 times higher (7.3 kW cm-2) than the typical damage threshold of the soldered disk without any sign of damage. The undoped capping may be effective for the suppression of ASE heating; however, according to the in situ OPD measurement it induces strong thermal lensing. The CW laser output power of 177 W was obtained at the pump power of 450 W with the optical-to-optical efficiency of 40% using V-shape cavity.
KW - atomic diffusion bonding
KW - composite Yb:YAG ceramic
KW - thermal effects
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U2 - 10.1088/1612-202X/14/1/015001
DO - 10.1088/1612-202X/14/1/015001
M3 - Article
AN - SCOPUS:85006493356
SN - 1612-2011
VL - 14
JO - Laser Physics Letters
JF - Laser Physics Letters
IS - 1
M1 - 015001
ER -