High-power 1.55-μm laser diodes with integrated vertical mode expanders

Heonsu Jeon, Jean Marc Verdiell, Atul Mathur, Mehrdad Ziari, Thomas L. Koch

Research output: Contribution to journalConference articlepeer-review


A 1.55-μm multiple quantum well laser diode with a built-in vertical mode expander exhibits high single mode output power in a circular far-field beam pattern. The divergence angle FWHM of the tapered device is 16° and the single mode laser output power exceeded 90 mW in cw condition. The coupling efficiency of a tapered LD is enhanced by 2 dB over a nontapered reference device, and a fiber output exceeding 50 mW is also demonstrated.

Original languageEnglish (US)
Pages (from-to)155-156
Number of pages2
JournalConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
StatePublished - 1997
EventProceedings of the 1997 Conference on Lasers and Electro-Optics, CLEO - Baltimore, MD, USA
Duration: May 18 1997May 23 1997

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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