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Recent Developments In Monolithic Phase-Locked Semiconductor Laser Arrays

Katz, J. and Kapon, E. and Margalit, S. and Yariv, A. (1984) Recent Developments In Monolithic Phase-Locked Semiconductor Laser Arrays. In: Spatial Light Modulators and Applications I. Proceedings of SPIE. No.465. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 176-180. ISBN 0892525002.

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Coherent combination of the power of several semiconductor lasers fabricated on the same substrate has been the subject of an intense research effort in recent years, the main motivation being to obtain higher power levels than those available from a single laser in a stable radiation pattern. Best results reported so far include 2.6 Watts cw emitted power and less than 10 far-field angle (in the array plane) in arrays where all the lasers are electrically connected in parallel. A different type of coherent array, where each element has a separate contact, has been recently demonstrated. While requiring the more complex two-level metallization technology, applying a separate contact to each laser provides an additional degree of freedom in the design and the operation of monolithic arrays. The separate contacts can be employed to tailor the near-field and far-field distributions and to compensate for device-to-device nonuniformities. Furthermore, the control of the currents of the array elements allows the performance of a variety of other functions, such as beam scanning, spectral mode control, wavelength tuning and control of the mutual coherence between array elements.

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Additional Information:© 1984 Society of Photo-Optical Instrumentation Engineers (SPIE). The research described in this paper was performed jointly by the Jet Propulsion Laboratory and the Applied Physics Department, California Institute of Technology, under contracts with the National Aeronautics and Space Administration, the Office of Naval Research and the National Science Foundation. E. Kapon would like to acknowledge the support of the Weizmann post-doctoral fellowship.
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Office of Naval Research (ONR)UNSPECIFIED
Weizmann Institute of ScienceUNSPECIFIED
Series Name:Proceedings of SPIE
Issue or Number:465
Record Number:CaltechAUTHORS:20200311-161941960
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Official Citation:J Katz, E Kapon, S Margalit, and A. Yariv "Recent Developments In Monolithic Phase-Locked Semiconductor Laser Arrays", Proc. SPIE 0465, Spatial Light Modulators and Applications I, (13 August 1984);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:101880
Deposited By: George Porter
Deposited On:16 Mar 2020 17:36
Last Modified:16 Nov 2021 18:06

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