High-Efficiency Broad-Ridge Waveguide Lasers
| Autor: | Hans Wenzel, Peter Ressel, M. Wilkens, Günther Tränkle, Stephan Strohmaier, Götz Erbert, Andrea Knigge, Andre Maabdorf, Jörg Fricke |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Maximum power principle business.industry Energy conversion efficiency Mode (statistics) 02 engineering and technology 021001 nanoscience & nanotechnology Epitaxy Laser 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Power (physics) law 0103 physical sciences Ridge (meteorology) Optoelectronics Laser beam quality Electrical and Electronic Engineering 0210 nano-technology business |
| Zdroj: | IEEE Photonics Technology Letters. 30:545-548 |
| ISSN: | 1941-0174 1041-1135 |
| DOI: | 10.1109/lpt.2018.2801621 |
| Popis: | Highly efficient single-spatial mode lasers with wattlevel output power in the 9xx-nm wavelength range are of great interest for a variety of applications. We experimentally investigate the influence of the mesa widths on the electrooptical properties of ridge-waveguide lasers, based on an extreme double asymmetric epitaxial structure. These properties are, for example, the conversion efficiency and the maximum power of single-lateral mode operation (kink power). At an output power of almost 1 W, single-lateral mode operation with the highest efficiency of 60% was achieved with a 10-μm ridge-width laser. The highest peak efficiency of 62% and the highest output power of 2.7 W with still 59% efficiency were yielded by a laser with a ridge width of 15 μm, at the expense of a slightly deteriorated beam quality due to the involvement of a higher order lateral mode. The kink power of the 10-μm-ridge laser can be further increased by decreasing the front facet reflectivity from 2.5% to 0.5%. |
| Databáze: | OpenAIRE |
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