Phase and group indices for double heterostructure lasers
Phase and group indices for double heterostructure lasers
Various models for calculation of refractive indices in semiconductor laser materials are discussed and the results for GaInAsP compounds are compared. It is shown that the modified single-oscillator model appears to be the most reliable. The group index is also considered since it can be found easily from measurements of laser spectra. The value of the group index is more model sensitive than the refractive index, but it also a function of the active-layer thickness in double heterostructures as a consequence of waveguide dispersion. A simple formula connecting group and phase indices for a symmetrical dielectric slab waveguide derived and used to calculate the effective group index for double-heterostructure lasers.
189-195
Buus, J.
272c54db-e378-45bc-bb9a-88e561f3408e
Adams, M.J.
4a9df701-bc4d-492e-a54e-de6d526d3083
1979
Buus, J.
272c54db-e378-45bc-bb9a-88e561f3408e
Adams, M.J.
4a9df701-bc4d-492e-a54e-de6d526d3083
Buus, J. and Adams, M.J.
(1979)
Phase and group indices for double heterostructure lasers.
Solid State & Electron Devices, 3 (6), .
(doi:10.1049/ij-ssed:19790038).
Abstract
Various models for calculation of refractive indices in semiconductor laser materials are discussed and the results for GaInAsP compounds are compared. It is shown that the modified single-oscillator model appears to be the most reliable. The group index is also considered since it can be found easily from measurements of laser spectra. The value of the group index is more model sensitive than the refractive index, but it also a function of the active-layer thickness in double heterostructures as a consequence of waveguide dispersion. A simple formula connecting group and phase indices for a symmetrical dielectric slab waveguide derived and used to calculate the effective group index for double-heterostructure lasers.
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Published date: 1979
Identifiers
Local EPrints ID: 78681
URI: http://eprints.soton.ac.uk/id/eprint/78681
ISSN: 0143-7100
PURE UUID: 795a0ad3-42c8-4140-8740-2bc59585462a
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 00:20
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Author:
J. Buus
Author:
M.J. Adams
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