High power multiple wavelength diode laser stack for DPSSL application without temperature control

Dong Hou; Xia Yin; Jingwei Wang; Shi Chen; Yun Zhan; Xiaoning Li; Yingmin Fan; Xingsheng Liu

doi:10.1117/12.2291169

20 February 2018 High power multiple wavelength diode laser stack for DPSSL application without temperature control

Dong Hou, Xia Yin, Jingwei Wang, Shi Chen, Yun Zhan, Xiaoning Li, Yingmin Fan, Xingsheng Liu

Proceedings Volume 10513, Components and Packaging for Laser Systems IV; 1051311 (2018) https://doi.org/10.1117/12.2291169
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

High power diode laser stack is widely used in pumping solid-state laser for years. Normally an integrated temperature control module is required for stabilizing the output power of solid-state laser, as the output power of the solid-state laser highly depends on the emission wavelength and the wavelength shift of diode lasers according to the temperature changes. However the temperature control module is inconvenient for this application, due to its large dimension, high electric power consumption and extra adding a complicated controlling system. Furthermore, it takes dozens of seconds to stabilize the output power when the laser system is turned on. In this work, a compact hard soldered high power conduction cooled diode laser stack with multiple wavelengths is developed for stabilizing the output power of solid-state laser in a certain temperature range. The stack consists of 5 laser bars with the pitch of 0.43mm. The peak output power of each bar in the diode laser stack reaches as much as 557W and the combined lasing wavelength spectrum profile spans 15nm. The solidstate laser, structured with multiple wavelength diode laser stacks, allows the ambient temperature change of 65°C without suddenly degrading the optical performance.

Citation Download Citation

Dong Hou, Xia Yin, Jingwei Wang, Shi Chen, Yun Zhan, Xiaoning Li, Yingmin Fan, and Xingsheng Liu "High power multiple wavelength diode laser stack for DPSSL application without temperature control", Proc. SPIE 10513, Components and Packaging for Laser Systems IV, 1051311 (20 February 2018); https://doi.org/10.1117/12.2291169

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KEYWORDS

Semiconductor lasers

Absorption

Solid state lasers

Temperature metrology

Nd:YAG lasers

Crystals

Resistance

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