Measurement of temperature-dependent polarization parameters in long-wavelength VCSELs

Quirce Teja, Ana; Valle Gutiérrez, Ángel; Pesquera Gonzalez, Luis; Thienpont, Hugo; Panajotov, Krassimir

doi:10.1109/JSTQE.2015.2410260

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Identificadores

URI: https://hdl.handle.net/10902/34915

DOI: 10.1109/JSTQE.2015.2410260

ISSN: 1077-260X

ISSN: 1558-4542

Fecha

2015-11

Derechos

©2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Publicado en

IEEE Journal of Selected Topics in Quantum Electronics, 2015, 21(6), 636-642

Editorial

Institute of Electrical and Electronics Engineers Inc.

Enlace a la publicación

https://doi.org/10.1109/JSTQE.2015.2410260

Palabras clave

Parameter estimation

Polarization switching

Vertical-cavity surface-emitting lasers (VCSELs)

Resumen/Abstract

Measurements of the polarization-resolved characteristics of a 1550-nm vertical-cavity surface-emitting laser (VCSEL) as a function of the temperature are presented. Type I (from the high-frequency to the low-frequency polarization mode) and Type II (from the low-frequency to the high-frequency polarization mode) polarization switchings (PS) are found in our device. Double PS (Type II followed by Type I and vice versa) are found when increasing the bias current for different device temperatures. Type II polarization switching to the gain disfavored mode is obtained. PS current, nonlinear dichroism, differential gain, and threshold current are measured as a function of the temperature. An expression relating these quantities to the spin-flip rate is derived. Using this expression, we have found large values of the spin-flip rate and its temperature dependence. The spin-flip rate increases with temperature except in a narrow temperature region in which a local minimum is observed. This behavior is mainly determined by the dependence of the inverse of the nonlinear dichroism on the temperature.