Characterization of an optically pumped ZnO-based 3rd order distributed feedback laser

Daniel Hofstetter, Yargo Bonetti, Esther Baumann, Fabrizio R. Giorgetta, Abdel Hamid El-Shaer, Andrey Bakin, Andreas Waag, Rüdiger Schmidt-Grund, Marius Grundmann, Mathias Schubert

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An optically pumped ZnO distributed feedback laser operating at 383 nm has been designed, fabricated and characterized. Single mode operation was observed for a wide temperature range between 10 and 270 K. In order to avoid technologically difficult etching of ZnO, a 3rd order diffraction grating was dry-etched into an additional 120 nm-thick Si3N4 layer deposited on the ZnO active region. The spectral linewidth of the laser emission was 0.4 nm, whereas an optical pump threshold intensity of 0.12 MW/cm 2 and a peak output power of 14 mW were seen. The temperature tuning coefficient of the ZnO refractive index was determined from wavelength vs. temperature measurements; a value of 9 × 10-5 K-1 was found, in good agreement with literature values.

Original languageEnglish (US)
Title of host publicationZinc Oxide Materials and Devices III
DOIs
StatePublished - 2008
EventZinc Oxide Materials and Devices III - San Jose, CA, United States
Duration: Jan 20 2008Jan 23 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6895
ISSN (Print)0277-786X

Other

OtherZinc Oxide Materials and Devices III
CountryUnited States
CitySan Jose, CA
Period1/20/081/23/08

Keywords

  • Distributed feedback laser
  • Optical pumping
  • Singlemode operation
  • ZnO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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