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Longitudinal-mode control in integrated semiconductor laser phased arrays by phase velocity matchingThe spectrum of semiconductor-laser arrays with separate contacts is investigated. It is demonstrated that the individual laser currents can be selected such that the array operates in a single longitudinal mode, in contrast to the multimode nature of its individual constituents. Moreover, it is possible to tune the lasing frequency by varying the laser currents. Wavelength tuning range of about 50 A, with tuning rate of about 5 A per milliampere, is demonstrated. It is suggested that these spectral features, characteristic of lasers which are coupled in parallel, result from the strong frequency dependence of their spatial mode pattern near the phase-matching frequency of their coupled waveguides.
Document ID
19840040491
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kapon, E.
(California Inst. of Tech. Pasadena, CA, United States)
Margalit, S.
(California Inst. of Tech. Pasadena, CA, United States)
Yariv, A.
(California Institute of Technology Pasadena, CA, United States)
Katz, J.
(California Institute of Technology; Jet Propulsion Laboratory Pasadena, CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 15, 1984
Publication Information
Publication: Applied Physics Letters
Volume: 44
ISSN: 0003-6951
Subject Category
Lasers And Masers
Accession Number
84A23278
Distribution Limits
Public
Copyright
Other

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