High-power single-mode triple-ridge waveguide semiconductor laser based on supersymmetry

• Main Authors: Xiaolei Zhao, Siwei Zeng, Lance Sweatt, Lin Zhu
• Format: Article
• Language: English
• Published: AIP Publishing LLC 2021-09-01
• Series: AIP Advances
• Online Access: http://dx.doi.org/10.1063/5.0060287

To achieve a high-power single-transverse mode laser, we here propose a supersymmetry-based triple-ridge waveguide semiconductor laser structure, which is composed of an electrically pumped main broad-ridge waveguide located in the middle and a pair of lossy auxiliary partner waveguides. The auxiliary partner waveguides are designed to provide dissipative modes that can phase match and couple with the higher-order modes in the main waveguide. By appropriately manipulating the gain–loss discrimination of the modes in the laser cavity, one can effectively suppress all the undesired higher-order transverse modes while keeping the fundamental one almost unaffected, thereby ensuring stable single-mode operation with a larger emitting aperture and accordingly a higher output power than a conventional single-transverse-mode ridge waveguide diode laser.