Gain-Dependent Polarization Properties of Vertical-Cavity Lasers

Kent D. Choquette, Richard P. Schneider, Kevin L. Lear, Ronald E. Leibenguth

Research output: Contribution to journalArticlepeer-review


We show that the partitioning of power into the two orthogonal eigen polarizations of infra-red gain-guided vertical-cavity lasers depends upon the relative spectral overlap of the nondegenerate polarization cavity resonances with the laser gain spectrum. Furthermore, at the condition where the polarization resonances and the peak laser gain are aligned, abrupt switching of power between the eigen polarizations is observed as the gain sweeps through the polarization resonances. The gain-dependence of the polarization requires spectral splitting between the eigen polarizations, which is found to be strongly influenced by local strain. The polarization of the fundamental and higher-order spatial modes can be selected and maintained for all InGaAs vertical-cavity lasers in a wafer simply by employing a 20 nm or greater blue-shift offset of the peak laser gain relative to the cavity resonances.

Original languageEnglish (US)
Pages (from-to)661-666
Number of pages6
JournalIEEE Journal on Selected Topics in Quantum Electronics
Issue number2
StatePublished - Jun 1995
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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