1-W single-mode edge-emitting DBR ring oscillators

• Published in: IEEE photonics technology letters Vol. 5; no. 4; pp. 369 - 371
• Main Authors: Dzurko, K.M., Welch, D.F., Scifres, D.R., Hardy, A.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.04.1993; Institute of Electrical and Electronics Engineers
• Subjects: 426002 - Engineering- Lasers & Masers- (1990-); APERTURES; BRAGG REFLECTION; CURRENT DENSITY; DESIGN; Diffraction; DIFFRACTION GRATINGS; Distributed Bragg reflectors; EFFICIENCY; ENGINEERING; Exact sciences and technology; FABRICATION; Frequency; Fundamental areas of phenomenology (including applications); GRATINGS; Laser beams; LASERS; OPENINGS; OPERATION; Optical amplifiers; Optics; Physics; POWER; Power generation; Pulse amplifiers; QUANTUM EFFICIENCY; REFLECTION; RING LASERS; Ring oscillators; SEMICONDUCTOR DEVICES; SEMICONDUCTOR LASERS; Semiconductor lasers; laser diodes; SOLID STATE LASERS; Single mode laser; Injection laser; Distributed Bragg reflection; Edge; Ring laser; Semiconductor laser
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/68.212667

The distributed Bragg reflector (DBR) ring oscillator, a class of single-mode diode laser that emits high-power, spatially coherent, single-frequency output from a large aperture, is discussed. Specifically an edge-emitting DBR ring oscillator that exhibits single frequency operation to 1 W output from a single facet is discussed. From a second device, the far field radiation pattern is a 0.20 degrees diffraction-limited beam which remains stable and stationary up to 460 mW, measured from an uncoated facet. This device produces over 2.5 W of coherent power into four equal beams and has a threshold current density of 177 A/cm/sup 2/ and a differential quantum efficiency of 63%.< >