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Proceedings Paper

Controlling diode laser bar temperature by micro channel liquid cooling
Author(s): Katrin Unger; Dietmar Mueller; Dirk Lorenzen; Franz X. Daiminger
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Paper 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.

Paper Details

Date Published: 15 September 1999
PDF: 12 pages
Proc. SPIE 3825, Microsystems Metrology and Inspection, (15 September 1999); doi: 10.1117/12.364306
Show Author Affiliations
Katrin Unger, Chemnitz Univ. of Technology (Germany)
Dietmar Mueller, Chemnitz Univ. of Technology (Germany)
Dirk Lorenzen, Jenoptik Laserdiode GmbH (Germany)
Franz X. Daiminger, Jenoptik Laserdiode GmbH (Germany)

Published in SPIE Proceedings Vol. 3825:
Microsystems Metrology and Inspection
Christophe Gorecki, Editor(s)

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