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Proceedings Paper

New design of multiple-active-region electrically pumped VCSELs and edge-emitting lasers
Author(s): Alexander N. Korshak; Zinovi S. Gribnikov; Vladimir V. Mitin
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Paper Abstract

A novel injection multi-active-region cascade laser with high output power, low threshold, small beam divergence, and high inter-modal discrimination is described. The cascade laser is formed by a periodic structure of stacked double- heterostructure diodes electrically connected by low- resistance tunnel junctions. The laser cavity is designed to match the nodes of the optical mode with the tunnel junctions and the antinodes-with the gain layers. We have considered both the cascade vertical-cavity surface-emitting laser (cascade VCSEL) and the cascade edge-emitting laser. In the multi-layer VCSEL with the multi-active-region cavity, the combined effect of increased net gain and distributed feedback allows an increased output from the Fabry-Perot resonator with mirrors of reduced reflectivity. The edge-emitting cascade laser represents a phase-locked laser array with a strong overall inter-element optical coupling. Maximum packing density of the active regions can be achieved in the common confinement cascade laser with weak optical confinement within a single array element. High inter-modal discrimination in the periodic laser structure with concentrated gain and absorption allows us to design a laser that operates in the in-phase mode with the tunnel junctions and gain layers placed in every second node and antinode of the mode, respectively.

Paper Details

Date Published: 29 April 1999
PDF: 10 pages
Proc. SPIE 3627, Vertical-Cavity Surface-Emitting Lasers III, (29 April 1999); doi: 10.1117/12.347100
Show Author Affiliations
Alexander N. Korshak, Wayne State Univ. (United States)
Zinovi S. Gribnikov, Wayne State Univ. (United States)
Vladimir V. Mitin, Wayne State Univ. (United States)

Published in SPIE Proceedings Vol. 3627:
Vertical-Cavity Surface-Emitting Lasers III
Kent D. Choquette; Chun Lei, Editor(s)

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