1 June 2004 Transient thermal tuning properties of single emitters in actively cooled high-power cm-bar arrays
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Proceedings Volume 5336, High-Power Diode Laser Technology and Applications II; (2004) https://doi.org/10.1117/12.528884
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States
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.
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Jens Wolfgang Tomm, Fritz Weik, Axel Gerhardt, Tien Quoc Tran, Jens Biesenbach, Holger Muntz, Gabriele Seibold, "Transient thermal tuning properties of single emitters in actively cooled high-power cm-bar arrays", Proc. SPIE 5336, High-Power Diode Laser Technology and Applications II, (1 June 2004); doi: 10.1117/12.528884; https://doi.org/10.1117/12.528884
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