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Proceedings Paper

Characterization of an optically pumped ZnO-based 3rd order distributed feedback laser
Author(s): Daniel Hofstetter; Yargo Bonetti; Esther Baumann; Fabrizio R. Giorgetta; Abdel-Hamid El-Shaer; Andrey Bakin; Andreas Waag; Rüdiger Schmidt-Grund; Marius Grundmann; Mathias Schubert
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Paper 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/cm2 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.

Paper Details

Date Published: 15 February 2008
PDF: 8 pages
Proc. SPIE 6895, Zinc Oxide Materials and Devices III, 68950J (15 February 2008); doi: 10.1117/12.762128
Show Author Affiliations
Daniel Hofstetter, Univ. of Neuchatel (Switzerland)
Yargo Bonetti, Univ. of Neuchatel (Switzerland)
Esther Baumann, Univ. of Neuchatel (Switzerland)
Fabrizio R. Giorgetta, Univ. of Neuchatel (Switzerland)
Abdel-Hamid El-Shaer, Technical Univ. of Braunschweig (Germany)
Andrey Bakin, Technical Univ. of Braunschweig (Germany)
Andreas Waag, Technical Univ. of Braunschweig (Germany)
Rüdiger Schmidt-Grund, Univ. of Leipzig (Germany)
Marius Grundmann, Univ. of Leipzig (Germany)
Mathias Schubert, Univ. of Nebraska, Lincoln (United States)

Published in SPIE Proceedings Vol. 6895:
Zinc Oxide Materials and Devices III
Ferechteh Hosseini Teherani; Cole W. Litton, Editor(s)

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