High brightness nanosecond-pulse operation of 905 nm distributed Bragg reflector tapered-ridge-waveguide lasers with multiple active regions

Heike Christopher; Maximilian Beier; Jan-Philipp Koester; Jörg Fricke; Arnim Ginolas; Armin Liero; Andre Maaßdorf; Hans Wenzel; Andrea Knigge

doi:10.1117/12.3002273

12 March 2024 High brightness nanosecond-pulse operation of 905 nm distributed Bragg reflector tapered-ridge-waveguide lasers with multiple active regions

Heike Christopher, Maximilian Beier, Jan-Philipp Koester, Jörg Fricke, Arnim Ginolas, Armin Liero, Andre Maaßdorf, Hans Wenzel, Andrea Knigge

Author Affiliations +

Proceedings Volume 12867, High-Power Diode Laser Technology XXII; 1286703 (2024) https://doi.org/10.1117/12.3002273
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

We present weakly tapered ridge waveguide distributed Bragg reflector lasers with three active regions epitaxially stacked in a common waveguide emitting nanosecond pulses around 905nm for LIDAR. The vertical structure is optimized for pulsed operation and implementation of a surface Bragg grating for emission in the 2nd order vertical mode. 6mm long diode lasers with a 25μm output aperture, integrated in an inhouse high pulse current electronic driver, provide a pulse power ⪆20W, a beam propagation ratio M²~4.5, and a brightness of ~16W(mm mrad). The emission spectrum features a spectral bandwidth of ⪅0.3nm and a temperature-related shift of ⪅70pm/K.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Heike Christopher, Maximilian Beier, Jan-Philipp Koester, Jörg Fricke, Arnim Ginolas, Armin Liero, Andre Maaßdorf, Hans Wenzel, and Andrea Knigge "High brightness nanosecond-pulse operation of 905 nm distributed Bragg reflector tapered-ridge-waveguide lasers with multiple active regions", Proc. SPIE 12867, High-Power Diode Laser Technology XXII, 1286703 (12 March 2024); https://doi.org/10.1117/12.3002273

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