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Conference Paper/Proceeding/Abstract 23942 views

Characterisation of the influence of multi-quantum barrier reflectors within GaInP/AlGaInP quantum well lasers using near-field imaging techniques

Richard Cobley Orcid Logo

Applied Surface Science, Volume: 255, Issue: 3, Pages: 649 - 652

Swansea University Author: Richard Cobley Orcid Logo

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DOI (Published version): 10.1016/j.apsusc.2008.07.062

Abstract

<p>Using a near-field scanning optical microscope, near-field photocurrent and topographic imaging has measured the effect on intrinsic electric fields and photocurrent propagation resulting from inserting multi-quantum barrier (MQB) super-lattices into quantum well lasers. Measurements on dev...

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Published in: Applied Surface Science
Published: 2008
URI: https://cronfa.swan.ac.uk/Record/cronfa5731
first_indexed 2013-07-23T11:53:33Z
last_indexed 2018-12-06T19:09:19Z
id cronfa5731
recordtype SURis
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spelling 2018-12-06T15:56:40.1264078 v2 5731 2013-09-03 Characterisation of the influence of multi-quantum barrier reflectors within GaInP/AlGaInP quantum well lasers using near-field imaging techniques 2ce7e1dd9006164425415a35fa452494 0000-0003-4833-8492 Richard Cobley Richard Cobley true false 2013-09-03 ACEM <p>Using a near-field scanning optical microscope, near-field photocurrent and topographic imaging has measured the effect on intrinsic electric fields and photocurrent propagation resulting from inserting multi-quantum barrier (MQB) super-lattices into quantum well lasers. Measurements on devices at two different excitation wavelengths have highlighted the sensitivity of the near-field optical technique. Strong correlations were seen in the photocurrent response of the multi-quantum barrier regions when compared with simulations made on the electric field generated within the structure. As a result, photocurrent attenuation was attributed to carrier confinement in these barrier regions when compared to a control sample. The measurements illustrate the effectiveness of the MQB, in addition to the sensitivity and power of the near-field photocurrent technique.</p> Conference Paper/Proceeding/Abstract Applied Surface Science 255 3 649 652 31 12 2008 2008-12-31 10.1016/j.apsusc.2008.07.062 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University 2018-12-06T15:56:40.1264078 2013-09-03T06:19:17.0000000 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering Richard Cobley 0000-0003-4833-8492 1
title Characterisation of the influence of multi-quantum barrier reflectors within GaInP/AlGaInP quantum well lasers using near-field imaging techniques
spellingShingle Characterisation of the influence of multi-quantum barrier reflectors within GaInP/AlGaInP quantum well lasers using near-field imaging techniques
Richard Cobley
title_short Characterisation of the influence of multi-quantum barrier reflectors within GaInP/AlGaInP quantum well lasers using near-field imaging techniques
title_full Characterisation of the influence of multi-quantum barrier reflectors within GaInP/AlGaInP quantum well lasers using near-field imaging techniques
title_fullStr Characterisation of the influence of multi-quantum barrier reflectors within GaInP/AlGaInP quantum well lasers using near-field imaging techniques
title_full_unstemmed Characterisation of the influence of multi-quantum barrier reflectors within GaInP/AlGaInP quantum well lasers using near-field imaging techniques
title_sort Characterisation of the influence of multi-quantum barrier reflectors within GaInP/AlGaInP quantum well lasers using near-field imaging techniques
author_id_str_mv 2ce7e1dd9006164425415a35fa452494
author_id_fullname_str_mv 2ce7e1dd9006164425415a35fa452494_***_Richard Cobley
author Richard Cobley
author2 Richard Cobley
format Conference Paper/Proceeding/Abstract
container_title Applied Surface Science
container_volume 255
container_issue 3
container_start_page 649
publishDate 2008
institution Swansea University
doi_str_mv 10.1016/j.apsusc.2008.07.062
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering
document_store_str 0
active_str 0
description <p>Using a near-field scanning optical microscope, near-field photocurrent and topographic imaging has measured the effect on intrinsic electric fields and photocurrent propagation resulting from inserting multi-quantum barrier (MQB) super-lattices into quantum well lasers. Measurements on devices at two different excitation wavelengths have highlighted the sensitivity of the near-field optical technique. Strong correlations were seen in the photocurrent response of the multi-quantum barrier regions when compared with simulations made on the electric field generated within the structure. As a result, photocurrent attenuation was attributed to carrier confinement in these barrier regions when compared to a control sample. The measurements illustrate the effectiveness of the MQB, in addition to the sensitivity and power of the near-field photocurrent technique.</p>
published_date 2008-12-31T12:12:23Z
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score 11.080252

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