Transverse mode stabilized AlGaAs/GaAs plano-convex waveguide laser made by a single-step liquid phase epitaxy
- 15 January 1980
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 36 (2), 121-123
- https://doi.org/10.1063/1.91401
Abstract
A new laser structure, the plano‐convex waveguide (PCW) laser is described. A thickness‐varied waveguide layer used for transverse mode stabilization was formed adjacent to the planar active layer. The laser structure was fabricated by a single‐step liquid phase epitaxialgrowth on a grooved substrate. With pulsed injection, stable fundamental transverse mode operation was observed up to 3.5 times threshold current, where power output was 36 mW/facet. At zero dc bias, single longitudinal mode was attained after 10 ns of the leading edge of the optical pulse. Far‐field beam divergences of about 10° and 50° were obtained in directions parallel and perpendicular to the junction plane, respectively.Keywords
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