Modal analysis of large spot size, low output beam divergence quantum-dot lasers

Brian Corbett; Paul Lambkin; James O'Callaghan; Stefan Deubert; Wolfgang Kaiser; Johann Peter Reithmaier; Alfred Forchel

doi:10.1109/LPT.2007.897569

Modal analysis of large spot size, low output beam divergence quantum-dot lasers

Brian Corbett
, Paul Lambkin
, James O'Callaghan
, Stefan Deubert
, Wolfgang Kaiser
, Johann Peter Reithmaier
, Alfred Forchel

Research output: Contribution to journal › Article › peer-review

Abstract

Large spot size ridge waveguide lasers utilizing a low modal gain single quantum dot layer emitting at 925 nm were designed and fabricated. Ridge waveguides with width <3 μm emit in a single transverse mode with a low transverse full-width at half-maximum divergence of 20°. Wider ridges initially lase in the first-order transverse mode before collapsing to the fundamental mode. This characteristic is explained by a thermally induced increase in the refractive index of the waveguide core. All lasers operate in a single lateral mode.

Original language	English
Pages (from-to)	916-918
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	19
Issue number	12
DOIs	https://doi.org/10.1109/LPT.2007.897569
Publication status	Published - 15 Jun 2007

Keywords

Large optical cavity (LOC)
Low divergence
Quantum-dot (QD) lasers

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10.1109/LPT.2007.897569

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title = "Modal analysis of large spot size, low output beam divergence quantum-dot lasers",

abstract = "Large spot size ridge waveguide lasers utilizing a low modal gain single quantum dot layer emitting at 925 nm were designed and fabricated. Ridge waveguides with width <3 μm emit in a single transverse mode with a low transverse full-width at half-maximum divergence of 20°. Wider ridges initially lase in the first-order transverse mode before collapsing to the fundamental mode. This characteristic is explained by a thermally induced increase in the refractive index of the waveguide core. All lasers operate in a single lateral mode.",

keywords = "Large optical cavity (LOC), Low divergence, Quantum-dot (QD) lasers",

author = "Brian Corbett and Paul Lambkin and James O'Callaghan and Stefan Deubert and Wolfgang Kaiser and Reithmaier, \{Johann Peter\} and Alfred Forchel",

year = "2007",

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doi = "10.1109/LPT.2007.897569",

language = "English",

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T1 - Modal analysis of large spot size, low output beam divergence quantum-dot lasers

AU - Corbett, Brian

AU - Lambkin, Paul

AU - O'Callaghan, James

AU - Deubert, Stefan

AU - Kaiser, Wolfgang

AU - Reithmaier, Johann Peter

AU - Forchel, Alfred

PY - 2007/6/15

Y1 - 2007/6/15

N2 - Large spot size ridge waveguide lasers utilizing a low modal gain single quantum dot layer emitting at 925 nm were designed and fabricated. Ridge waveguides with width <3 μm emit in a single transverse mode with a low transverse full-width at half-maximum divergence of 20°. Wider ridges initially lase in the first-order transverse mode before collapsing to the fundamental mode. This characteristic is explained by a thermally induced increase in the refractive index of the waveguide core. All lasers operate in a single lateral mode.

AB - Large spot size ridge waveguide lasers utilizing a low modal gain single quantum dot layer emitting at 925 nm were designed and fabricated. Ridge waveguides with width <3 μm emit in a single transverse mode with a low transverse full-width at half-maximum divergence of 20°. Wider ridges initially lase in the first-order transverse mode before collapsing to the fundamental mode. This characteristic is explained by a thermally induced increase in the refractive index of the waveguide core. All lasers operate in a single lateral mode.

KW - Large optical cavity (LOC)

KW - Low divergence

KW - Quantum-dot (QD) lasers

UR - https://www.scopus.com/pages/publications/34249930519

U2 - 10.1109/LPT.2007.897569

DO - 10.1109/LPT.2007.897569

M3 - Article

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SP - 916

EP - 918

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 12

ER -

Modal analysis of large spot size, low output beam divergence quantum-dot lasers

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Keywords

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