Title :
Prism-like folded cavity surface-emitting laser diode: electromagnetic-threshold analysis
Author_Institution :
Inst. of Electron Technol., Warsaw, Poland
fDate :
6/1/1998 12:00:00 AM
Abstract :
A novel structure for a surface-emitting laser diode with prism-like folded cavity is proposed. Walls of this cavity form a 90° corner with total internal reflection. As a result, only one output mirror (at the substrate side) is needed, allowing the cavity to be in proximity with the top contact and thus reducing device resistances. A method of technical realisation of the device is proposed briefly. Simple electromagnetic-threshold analysis predicts location of the cavity modes in the gain spectral range of the GaAs active medium, indicating conditions for single-mode operation. It is found that an optical-field distribution can be approximated as a (folded) wave with a plane wavefront inside the cavity of even and odd modes
Keywords :
III-V semiconductors; gallium arsenide; laser cavity resonators; laser modes; laser theory; optical prisms; semiconductor device models; semiconductor lasers; surface emitting lasers; 90° corner; GaAs; GaAs active medium; cavity modes location; device resistances; electromagnetic-threshold analysis; even modes; folded wave; gain spectral range; laser modes; odd modes; optical-field distribution; output mirror; prism-like folded cavity surface-emitting laser diode; single-mode operation; substrate side; surface-emitting laser diode; technical realisation; top contact; total internal reflection;
Journal_Title :
Optoelectronics, IEE Proceedings -
DOI :
10.1049/ip-opt:19981878
