Controlling diode laser bar temperature by micro channel liquid cooling

Katrin Unger; Dietmar Mueller; Dirk Lorenzen; Franz X. Daiminger

doi:10.1117/12.364306

15 September 1999 Controlling diode laser bar temperature by micro channel liquid cooling

Katrin Unger, Dietmar Mueller, Dirk Lorenzen, Franz X. Daiminger

Proceedings Volume 3825, Microsystems Metrology and Inspection; (1999) https://doi.org/10.1117/12.364306
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

Abstract

In this paper investigations of temperature control of micro channel cooled high power diode lasers are presented. After a short motivation the theoretical background of a complete liquid cooling system is introduced and the simulation results are compared to the behavior of a real-world system. Because of the nonlinear dependence of the thermal resistance on the water flux modern control algorithms are required to achieve a sufficient control quality and robustness. Their design and characterization are presented as well. Based on the results of diode laser temperature control the potentials to realize a highly efficient wavelength control are discussed. To support future system integration and to realize the controller with minimal hardware expenditure an application specific integrated circuit (ASIC) was developed.

Citation Download Citation

Katrin Unger, Dietmar Mueller, Dirk Lorenzen, and Franz X. Daiminger "Controlling diode laser bar temperature by micro channel liquid cooling", Proc. SPIE 3825, Microsystems Metrology and Inspection, (15 September 1999); https://doi.org/10.1117/12.364306

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