標題: Polarization properties in the transition from below to above lasing threshold in broad-area vertical-cavity surface-emitting lasers
作者: Schulz-Ruhtenberg, M.
Babushkin, I. V.
Loiko, N. A.
Huang, K. F.
Ackemann, T.
電子物理學系
Department of Electrophysics
公開日期: 1-二月-2010
摘要: For highly divergent emission of broad-area vertical-cavity surface-emitting lasers, a rotation of the polarization direction by up to 90 degrees occurs when the pump rate approaches the lasing threshold. Well below threshold the polarization is parallel to the direction of the transverse wave vector and is determined by the transmissive properties of the Bragg reflectors that form the cavity mirrors. In contrast, near-threshold and above-threshold emission is more affected by the reflective properties of the reflectors and is predominantly perpendicular to the direction of transverse wave vectors. Two qualitatively different types of polarization transition are demonstrated: an abrupt transition, where the light polarization vanishes at the point of the transition, and a smooth transition, where it is significantly nonzero during the transition.
URI: http://dx.doi.org/10.1103/PhysRevA.81.023819
http://hdl.handle.net/11536/5856
ISSN: 1050-2947
DOI: 10.1103/PhysRevA.81.023819
期刊: PHYSICAL REVIEW A
Volume: 81
Issue: 2
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