Distributed Bragg reflector ring oscillators: A large aperture source of high single-mode optical power

Distributed-Bragg-reflector (DBR) ring oscillators are the first monolithic semiconductor lasers containing broad-area active regions which operate in a single mode to several times their threshold current. Orthogonally oriented diffraction gratings surrounding an unpatterned active region select a...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 1993-06, Vol.29 (6), p.1895-1905, Article 1895
Main Authors: Dzurko, K.M., Hardy, A., Scifres, D.R., Welch, D.F., Waarts, R.G., Lang, R.J.
Format: Article
Language:English
Subjects:
426002 - Engineering- Lasers & Masers- (1990-)
APERTURES
CURRENTS
DATA
DESIGN
Diffraction
DIFFRACTION GRATINGS
Distributed Bragg reflectors
ELECTRIC CURRENTS
ENGINEERING
Exact sciences and technology
EXPERIMENTAL DATA
Frequency
Fundamental areas of phenomenology (including applications)
GRATINGS
INFORMATION
Laser modes
Laser optical systems: design and operation
LASERS
MODE SELECTION
NUMERICAL DATA
OPENINGS
Optics
Physics
Power generation
Resonators, cavities, amplifiers, arrays, and rings
Ring lasers
Ring oscillators
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
Semiconductor lasers
laser diodes
SOLID STATE LASERS
THEORETICAL DATA
THRESHOLD CURRENT
TUNING
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Description
Summary:Distributed-Bragg-reflector (DBR) ring oscillators are the first monolithic semiconductor lasers containing broad-area active regions which operate in a single mode to several times their threshold current. Orthogonally oriented diffraction gratings surrounding an unpatterned active region select a single spatial and temporal mode of oscillation. The authors present both analytic and experimental verification of single mode operation for active dimensions up to 368 mu m*1000 mu m. Threshold current densities under 200 A/cm/sup 2/ and total differential efficiencies greater than 60% have been measured. DBR ring oscillators have demonstrated over 1 W of single frequency output power, 460 mW of spatially coherent, single frequency output power, and nearly circular diffraction limited output to 4xI/sub th/. The performance potential of these devices is enormous, considering that the output apertures are nearly two orders of magnitude wider than conventional single-mode sources which generate up to 0.2 W of coherent output.< >
ISSN:0018-9197
1558-1713
DOI:10.1109/3.234451