Validation of model of external-cavity semiconductor laser and extrapolation from five-element to multielement fiber-coupled high-power laser

Journal Article · Thu Jun 01 04:00:00 EDT 1989 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/3.29291· OSTI ID:5940673

Rediker, R H; Pang, L Y; Corcoran, C; Liew, S K

The model used to explain the operation of an external cavity containing five discrete AR-coated semiconductor lasers and a spatial filter to assure coherent output from the cavity has been experimentally validated. This model predicts that the external cavity will operate as a coherent source with a multitude of discrete individual lasers and/or monolithic arrays. Control by an external cavity of the series combination of an optical fiber and an AR-coated semiconductor laser has previously been demonstrated. For systems requiring high average-power operation, distributed AR-coated lasers that are fiber coupled into an external cavity provide a potential alternative to broad-area lasers or monolithic laser arrays with high density of power dissipation which must use thermoelectric or other cooling. In comparing these approaches, systems tradeoff should be made between the added complexity of the cooling system and the added complexity of the external cavity. An annular input to the external cavity from an array of fibers is proposed for high beam quality.

• Research Organization: Massachusetts Inst. of Tech., Cambridge, MA (USA). Dept. of Electrical Engineering and Computer Science; Massachusetts Inst. of Tech., Cambridge, MA (USA). Dept. of Physics; David Sarnoff Research Center, Princeton, NJ (USA)
• OSTI ID: 5940673
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 25:6; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ARGON
BEAM OPTICS
COATINGS
COHERENT RADIATION
COOLING
ELECTROMAGNETIC RADIATION
ELEMENTS
EXTRAPOLATION
FIBERS
FILTERS
FLUIDS
GASES
LASER CAVITIES
LASERS
NONMETALS
NUMERICAL SOLUTION
OPTICAL FIBERS
OPTICAL FILTERS
RADIATIONS
RARE GASES
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
TESTING
VALIDATION