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9 March 2020 Investigation of 48 emitter DBR laser bars under nanosecond high-peak current excitation (Conference Presentation)
Heike Christopher, Andreas Klehr, Jörg Fricke, Armin Liero, Hans Wenzel, Andrea Knigge, Günther Tränkle
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Proceedings Volume 11301, Novel In-Plane Semiconductor Lasers XIX; 113010O (2020) https://doi.org/10.1117/12.2544165
Event: SPIE OPTO, 2020, San Francisco, California, United States
Abstract
We present a detailed experimental investigation of 48 emitter distributed Bragg reflector laser bars, developed for LIDAR applications, that emit nanosecond pulses under pulsed high current excitation round 905 nm. The in-house developed electrical interface provides nanosecond pulses with peak currents up to 900 A. The influence of chip length, active region design, and operation parameters are investigated. Experimental results including the optical pulse power, the spectral emission characteristics, and temporal characteristics will be presented. Peak optical pulse powers exceeding 440 W at >600 A and 650 W at >900 A for 2 ns and 10 ns long pulses, respectively, at 10 kHz and 25 °C can be achieved.
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Heike Christopher, Andreas Klehr, Jörg Fricke, Armin Liero, Hans Wenzel, Andrea Knigge, and Günther Tränkle "Investigation of 48 emitter DBR laser bars under nanosecond high-peak current excitation (Conference Presentation)", Proc. SPIE 11301, Novel In-Plane Semiconductor Lasers XIX, 113010O (9 March 2020); https://doi.org/10.1117/12.2544165
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KEYWORDS
Biomedical optics
Free space optics
Laser development
LIDAR
Pulsed laser operation
Surgery
Biology
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