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Noncircular refractive index profile and breakdown of mode degeneracy of vertical cavity surface emitting lasers

Li, M and Zhang, B and Chen, KP and Snoke, DW and Heberle, AP (2012) Noncircular refractive index profile and breakdown of mode degeneracy of vertical cavity surface emitting lasers. IEEE Journal of Quantum Electronics, 48 (8). 1065 - 1068. ISSN 0018-9197

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Abstract

Spatially and spectrally resolved near-field images of the transverse mode patterns of vertical cavity surface emitting lasers (VCSELs) are obtained by confocal microscopy with optical spectrum analyzer. A non-circular internal effective index profile of the VCSEL is inferred from the observed wavelength splitting of the degenerated modes. Using the mode intensity patterns associated with their spectral information, an elliptical parabolic profile superposed to a step-like refractive index profile is extracted by fitting the internal structural parameters of VCSEL. Wavelength splitting of the degenerated ${\rm LG} 01 modes is calculated from the fitting results, and is found to be in reasonable accord with our experiment results. © 2012 IEEE.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Li, M
Zhang, B
Chen, KPpec9@pitt.eduPEC9
Snoke, DWsnoke@pitt.eduSNOKE
Heberle, AP
Date: 25 June 2012
Date Type: Publication
Journal or Publication Title: IEEE Journal of Quantum Electronics
Volume: 48
Number: 8
Page Range: 1065 - 1068
DOI or Unique Handle: 10.1109/jqe.2012.2201697
Schools and Programs: Swanson School of Engineering > Electrical and Computer Engineering
Refereed: Yes
ISSN: 0018-9197
Date Deposited: 15 Oct 2014 20:39
Last Modified: 03 Feb 2019 04:55
URI: http://d-scholarship.pitt.edu/id/eprint/23230

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