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Proceedings Paper

Transient thermal tuning properties of single emitters in actively cooled high-power cm-bar arrays
Author(s): Jens Wolfgang Tomm; Fritz Weik; Axel Gerhardt; Tien Quoc Tran; Jens Biesenbach; Holger Muntz; Gabriele Seibold
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Paper Abstract

Transient thermal properties of actively cooled InAlGaAs-based high-power diode laser arrays, so-called 'cm-bars', are investigated for 'low-frequency' pulsed operation with a repetition rate of 0.1-10 Hz. Under these operation conditions the devices experience almost complete thermal cycles between the temperature of the heat sink and the operation temperature typical for continuous wave operation. We analyze the thermal tuning behavior that is governed by the thermal bandgap shift (85%) but substantially modified by pure pressure tuning (15%). During operation further modification arises from inhomogeneous temperature distribution along the 'cm-bar.' Our results offer the possibility specifying optimum operation condition of 'low-frequency' pulsed operation resulting in improved reliability.

Paper Details

Date Published: 1 June 2004
PDF: 7 pages
Proc. SPIE 5336, High-Power Diode Laser Technology and Applications II, (1 June 2004); doi: 10.1117/12.528884
Show Author Affiliations
Jens Wolfgang Tomm, Max-Born-Institut fur Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Fritz Weik, Max-Born-Institut fur Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Axel Gerhardt, Max-Born-Institut fur Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Tien Quoc Tran, Max-Born-Institut fur Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Jens Biesenbach, DILAS Diodenlaser GmbH (Germany)
Holger Muntz, DILAS Diodenlaser GmbH (Germany)
Gabriele Seibold, DILAS Diodenlaser GmbH (Germany)


Published in SPIE Proceedings Vol. 5336:
High-Power Diode Laser Technology and Applications II
Mark S. Zediker, Editor(s)

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