Far-field patterns of quantum well, quantum dash, and quantum dot laser diodes

Y. H. Ding, C. L. Tan, V. Hongpinyo, C. E. Dimas, Y. Wang, C. Chen, H. S. Djie, Boon Ooi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We perform measurements of far field pattern of various quantum-confined heterostructures namely quantum well (QW), quantum dash (Qdash), and quantum dot (Qdot) lasers to study the effect of different active gain mediums of semiconductor lasers on the optical beam quality and coupling efficiency. The beam pattern profile of the Qdash laser is similar to that of the QW laser (FWHM ∼ 20°) while Qdot laser shows smaller divergence (FWHM ∼ 5°) and retain its intensity profile of single lobe Gaussian-shape at current injection up to two and half times threshold current.

Original languageEnglish (US)
Title of host publication2008 IEEE PhotonicsGlobal at Singapore, IPGC 2008
DOIs
StatePublished - Dec 1 2008
Event2008 IEEE PhotonicsGlobal at Singapore, IPGC 2008 - Singapore, Singapore
Duration: Dec 8 2008Dec 11 2008

Publication series

Name2008 IEEE PhotonicsGlobal at Singapore, IPGC 2008

Other

Other2008 IEEE PhotonicsGlobal at Singapore, IPGC 2008
CountrySingapore
CitySingapore
Period12/8/0812/11/08

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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