Investigation of polarization behavior in a vertical coupled-cavities surface-emitting laser

We report a novel three-contact coupled-vertical-cavity surface-emitting laser (VCSEL) for use in polarization-sensitive optical applications. The device consists in two vertical cavities, coupled by a common semitransparent mirror. We demonstrate that one can independently choose both the power of the output beam - through the current in the first cavity - and the polarization state - through the bias applied to the second cavity. The control of the polarization state is performed with a control of voltage required in the range -2V to 0V. Within this interval the structure exhibits a bistable behavior with respect to the bottom cavity bias. Several physical mechanisms to explain the polarization switch are discussed.


Published in:
Vcsels And Optical Interconnects, 4942, 363-369
Presented at:
Conference on VCSELs and Optical Interconnects, BRUGGE, BELGIUM, Oct 30-Nov 01, 2002
Year:
2003
Publisher:
SPIE
Keywords:
Laboratories:




 Record created 2010-10-13, last modified 2018-03-17


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