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

Journal Article · Tue Jun 01 00:00:00 EDT 1993 · IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/3.234451· OSTI ID:5614613

Dzurko, K M; Hardy, A; Scifres, D R; Welch, D F; Waarts, R G; Lang, R J ^[1]

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1. Spectra Diode Labs., San Jose, CA (United States)

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. This paper presents both analytic and experimental verification of single mode operation for active dimensions up to 368 [times] 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 4 [times] I[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.

• OSTI ID: 5614613
• Journal Information: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States) Vol. 29:6; ISSN 0018-9197; ISSN IEJQA7
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
APERTURES
CURRENTS
DATA
DESIGN
DIFFRACTION GRATINGS
ELECTRIC CURRENTS
EXPERIMENTAL DATA
GRATINGS
INFORMATION
LASERS
MODE SELECTION
NUMERICAL DATA
OPENINGS
PERFORMANCE
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
THEORETICAL DATA
THRESHOLD CURRENT
TUNING