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Proceedings Paper

Polarization characteristics, control, and modulation of vertical-cavity surface emitting lasers
Author(s): Kent D. Choquette; Kevin L. Lear; Richard P. Schneider; Ronald E. Leibenguth; Jeffrey J. Figiel; Sean P. Kilcoyne; Mary Hagerott Crawford; John C. Zolper
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Paper Abstract

The gain-dependent polarization properties of vertical-cavity surface emitting lasers and methods for polarization control and modulation are discussed. The partitioning of power between the two orthogonal eigen polarizations is shown to depend upon the relative spectral alignment of the nondegenerate polarization cavity resonances with the laser gain spectrum. A dominant polarization can thus be maintained by employing a blue-shifted offset of the peak laser gain relative to the cavity resonance wavelength. Alternatively, the polarization can be controlled through use of anisotropic transverse cavity geometries. The orthogonal eigen polarizations are also shown to enable polarization modulation. By exploiting polarization switching transitions in cruciform lasers, polarization modulation of the fundamental mode up to 50 MHz is demonstrated. At lower modulation frequencies, complementary digital polarized output or frequency doubling of the polarized output is obtained. Control and manipulation of vertical-cavity laser polarization may prove valuable for present and future applications.

Paper Details

Date Published: 28 April 1995
PDF: 12 pages
Proc. SPIE 2382, Laser Diodes and Applications, (28 April 1995); doi: 10.1117/12.208441
Show Author Affiliations
Kent D. Choquette, Sandia National Labs. (United States)
Kevin L. Lear, Sandia National Labs. (United States)
Richard P. Schneider, Sandia National Labs. (United States)
Ronald E. Leibenguth, AT&T Bell Labs. (United States)
Jeffrey J. Figiel, Sandia National Labs. (United States)
Sean P. Kilcoyne, Sandia National Labs. (United States)
Mary Hagerott Crawford, Sandia National Labs. (United States)
John C. Zolper, Sandia National Labs. (United States)

Published in SPIE Proceedings Vol. 2382:
Laser Diodes and Applications
Kurt J. Linden; Prasad R. Akkapeddi, Editor(s)

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