Semiconductor laser mode engineering via waveguide index structuring

Semiconductor Diode Lasers;Lasers;Dielectric Waveguide;Waveguide Modes;Laser Modes;Helmholtz Equation;Finite Difference Method;Modal Discrimination;Modal Selection;Mode Engineering;Beam Engineering;Beam Brightness

Strzebonski, Pawel Jakub ; Choquette ; Kent D.

关键词: Semiconductor Diode Lasers;    Lasers;    Dielectric Waveguide;    Waveguide Modes;    Laser Modes;    Helmholtz Equation;    Finite Difference Method;    Modal Discrimination;    Modal Selection;    Mode Engineering;    Beam Engineering;    Beam Brightness;   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/102511/STRZEBONSKI-THESIS-2018.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

Semiconductor laser diodes are used in many applications, and their performance is often strongly influenced by the optical mode properties. In this work, dielectric waveguides and their guided modes have been simulated and analyzed as relevant to semiconductor diode lasers. The transverse refractive index structure of waveguides determines the modal field profiles and modal properties. By engineering the transverse index structure we show that it is possible to increase modal discrimination and impart modal selection. We further show that we can engineer the modal field profile itself for the purpose of engineering the properties of the laser beam, such as far-field brightness. Therefore waveguide engineering using index structuring may be beneficial to enhancing semiconductor laser performance.