Observation and analysis of phase-locking in parabolic bow-tie laser arrays


Causa, F. and Masanotti, D., 2006. Observation and analysis of phase-locking in parabolic bow-tie laser arrays. IEEE Journal of Quantum Electronics, 42 (9-10), pp. 1016-1022.

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    This paper presents experimental and theoretical results to show that in-phase coherent coupling occurs in high-power arrays of parabolic bow-tie lasers. Such devices require simple and inexpensive device fabrication, thus providing a cost-effective highpower laser for high-brightness operation at 980 nm. The maximum brightness achieved was 318MW cm-2sr-1 at 20 times the threshold with far-field full-width at half-maximum less than 1.5 times the diffraction limit, measured without the use of external lenses under low-duty cycle (0.1%) pulsed operation. Results obtained from double-slit interference experiments show a clear distinction between phase-coherent arrays and corresponding arrays of independent emitters.


    Item Type Articles
    CreatorsCausa, F.and Masanotti, D.
    Uncontrolled Keywordslaser arrays, high-power, high-brightness, phase-locking, tapered geometry, index-guiding
    DepartmentsFaculty of Engineering & Design > Electronic & Electrical Engineering
    ID Code389
    Additional Information©2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.


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