We present a detailed analysis of the output beam of high-power edge-emitting angled tapered superluminescent LEDs (A-TSLEDs). A device model, including spontaneous and stimulated emission processes as well as the typical nonuniform carrier-density distribution due to current spreading and carrier diffusion, has been developed and used to interpret the experimentally obtained characteristics of inhouse-fabricated A-TSLEDs. The good match between measured and theoretical results indicates that the model reproduces the A-TSLED operation very satisfactorily and clearly explains the role of the collecting lens on the pronounced asymmetry of some of the measured optical intensity profiles.
© 2002 Optical Society of America
Original Manuscript: January 25, 2002
Revised Manuscript: February 6, 2002
Published: August 20, 2002
Federica Causa, Jayanta Sarma, and Sharina Yunus, "Characterization of angled tapered superluminescent LEDs," Appl. Opt. 41, 5045-5050 (2002)