Design of high brightness fiber-coupled green diode laser module

Ziming Liu; Wenbin Qin; Sitong Li; Qingxuan Li; Zhiyong Wang

doi:10.1117/12.2656027

16 December 2022 Design of high brightness fiber-coupled green diode laser module

Ziming Liu, Wenbin Qin, Sitong Li, Qingxuan Li, Zhiyong Wang

Proceedings Volume 12501, Seventeenth National Conference on Laser Technology and Optoelectronics; 125010L (2022) https://doi.org/10.1117/12.2656027
Event: Seventeenth National Conference on Laser Technology and Optoelectronics, 2022, Shanghai, China

Abstract

As a pump source for Ti: Sapphire solid-state lasers, the fiber-coupled green diode laser module is critical. However, existing study findings are insufficient to meet the demands of high brightness diode laser pump sources. In this paper, a high brightness green diode laser fiber-coupled system based on TO-can diode lasers is designed. The FACs are installed within the TO-can diode lasers. The optical step as the spatial beam combining system is made up of the HR mirror and the optical wedge. We discussed the relationship between the reflected beam deflection angle and the optical wedge surface inclination angle under the condition of different HR mirror inclination angles. After that, a strategy with appropriate heat dissipation effect is obtained through thermal simulation. Finally, the simulation results verify that couple 18 TO-can single emitters into a 50μm core diameter and 0.22 numerical aperture optical fiber with an output power of 16.9W, the fiber coupling efficiency is 98%. The brightness is 5.66 MW/(cm²·Sr) and the module dimension is L 220mm×W 80mm×H 45mm.

Citation Download Citation

Ziming Liu, Wenbin Qin, Sitong Li, Qingxuan Li, and Zhiyong Wang "Design of high brightness fiber-coupled green diode laser module", Proc. SPIE 12501, Seventeenth National Conference on Laser Technology and Optoelectronics, 125010L (16 December 2022); https://doi.org/10.1117/12.2656027

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KEYWORDS

Semiconductor lasers

Optical fibers

Mirrors

Collimation

Ray tracing

Laser systems engineering

Optical simulations

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