Compact, efficient, low-threshold 320 nm continuous-wave ultraviolet laser
Abstract
This paper reports a compact, efficient, low-threshold continuous-wave 320 nm ultraviolet laser based on a linear cavity with Pr:YLF and LiB3O5 (LBO) crystals. Thermal effects were analyzed via a three-dimensional temperature field model and thermal lens calculations, guiding the selection of crystal parameters that balance pump absorption and heat load. Using a 0.5 at. % doped Pr:YLF crystal of 8 mm length and a 12 mm long LBO crystal, the laser delivers 3.03 W of continuous-wave 320 nm output with a slope efficiency of 35.2% and a threshold power of 60 mW—the highest slope efficiency reported for a CW Pr:YLF laser at this wavelength. The compact linear cavity minimizes length and loss, offering a viable design for future highly integrated ultraviolet lasers using crystal bonding technology.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (11)
JinYuan Wu
State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 1 , Fuzhou, Fujian 350002,
Shengyuan Pan
State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 1 , Fuzhou, Fujian 350002,
Jinming Huang
State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 1 , Fuzhou, Fujian 350002,
Jiaxue Zhao
State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 1 , Fuzhou, Fujian 350002,
Ying Xie
Qingxuan Zhu
State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 1 , Fuzhou, Fujian 350002,
Wenbin Liao
State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 1 , Fuzhou, Fujian 350002,
Zhaojie Zhu
State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 1 , Fuzhou, Fujian 350002,
Zhenwei Ou
State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 1 , Fuzhou, Fujian 350002,
Bingxuan Li
State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 1 , Fuzhou, Fujian 350002,
Ge Zhang