Criticalities and Phase Transitions in the Polarization Switching of Vertical-Cavity Surface-Emitting Lasers

This letter reports on four criticalities observed in the polarization switching (PS) of vertical-cavity surface-emitting lasers (VCSELs). These are a critical slowing down nearing PS, a power law and scaling law of the relaxation time, and an adiabatic no-go, which indicates that the critical point...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 24; no. 24; pp. 2262 - 2264
Main Authors Kuo, Wang-Chuang, Wu, Yu-Heng, Li, Yueh-Chen, Yen, Tsu-Chiang
Format Journal Article
LanguageEnglish
Published IEEE 15.12.2012
Subjects
Criticalities
Laser modes
Laser transitions
Optical switches
phase transition
polarization switching (PS)
Vertical cavity surface emitting lasers
vertical-cavity surface-emitting lasers (VCSELs)
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Summary:This letter reports on four criticalities observed in the polarization switching (PS) of vertical-cavity surface-emitting lasers (VCSELs). These are a critical slowing down nearing PS, a power law and scaling law of the relaxation time, and an adiabatic no-go, which indicates that the critical point can not be reached adiabatically. The critical exponent of the relaxation time, \Delta , is measured about 2.3. To our knowledge, this is the first investigation of these criticalities in the VCSEL's PS (VPS). The phase transition characteristics of VPS are also discussed, including the possible connection with the quantum phase transitions.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2012.2226572