University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Novel heterostructure design for increased spectral width of superluminescentdiodes and dual-wavelength laser diodes

Green, BC, Yu, S-Q, Sweeney, SJ, Ding, D and Zhang, Y-H (2008) Novel heterostructure design for increased spectral width of superluminescentdiodes and dual-wavelength laser diodes In: 66th DRC, 2008-06-23 - 2008-06-25, Santa Barbara, USA.

[img] PDF
Novel heterostructure design for increased spectral width of superluminescentdiodes and dual-wavelength laser diodes.pdf
Restricted to Repository staff only
Available under License : See the attached licence file.

Download (1MB)
[img] PDF (licence)
SRI_deposit_agreement.pdf
Restricted to Repository staff only

Download (33kB)

Abstract

Superluminescent diodes (SLDs) based on amplified spontaneous emission are used in numerous applications such as optical coherence tomography where the short coherence length due to the broad spectral width enables high resolution images. Multiple approaches have been made to broaden the spectrum of SLDs to reduce the coherence length further. These include multi-quantum well (MQW) designs with different effective band gaps formed either by different well widths or different well compositions. These MQWs forming the active region of the device are conventionally located within the intrinsic region of a p-i-n junction diode and have common quasi-Fermi levels determined by the current injection and carrier lifetime. The overall spectral width of these devices however narrows at high injection levels when the injection is increased to reach the desired output power. This spectral narrowing is due to the disproportionate increase in gain for different wavelengths as the injection is increased.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Authors :
AuthorsEmailORCID
Green, BCUNSPECIFIEDUNSPECIFIED
Yu, S-QUNSPECIFIEDUNSPECIFIED
Sweeney, SJUNSPECIFIEDUNSPECIFIED
Ding, DUNSPECIFIEDUNSPECIFIED
Zhang, Y-HUNSPECIFIEDUNSPECIFIED
Date : 2008
Identification Number : https://doi.org/10.1109/DRC.2008.4800853
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 14:11
Last Modified : 28 Mar 2017 14:11
URI: http://epubs.surrey.ac.uk/id/eprint/733531

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800