Unidirectional operation in a semiconductor ring diode laser

Journal Article · Mon Mar 15 04:00:00 EST 1993 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.108728· OSTI ID:6792146

Hohimer, J P; Vawter, G A; Craft, D C ^[1]

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1. Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)

We report the first demonstration of a unidirectional ring diode laser based on the use of an active crossover waveguide. The crossover waveguide introduces both a nonreciprocal loss and gain into the ring cavity to promote unidirectional lasing in the clockwise ring direction. Up to 95% of the continuous-wave lasing output of 3.5 mW (at 150 mA ring current) is emitted from this preferred lasing direction. Unidirectional operation of the ring diode laser is also shown to increase the linearity of the light-vs-current curves, eliminating kinks otherwise occurring from gain competition in the ring cavity.

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6792146
• Journal Information: Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 62:11; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
DESIGN
LASERS
PERFORMANCE
RING LASERS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
WAVEGUIDES