Demonstration of an ultraviolet ZnO-based optically pumped third order distributed feedback laser

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

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Abstract

The authors demonstrate an optically pumped ZnO distributed feedback laser operating at 383 nm. For a large temperature range between 10 and 270 K, the device lased in a single longitudinal mode. Mode selection was accomplished via a third order diffraction grating, which was dry etched into a 120 nm thick Si3 N4 layer deposited on the ZnO active region. They observed a spectral linewidth of 0.4 nm, a pump threshold intensity of 0.12 MW cm2, and a peak output power of 14 mW. From wavelength versus temperature measurements, they deduced a temperature tuning coefficient of the ZnO refractive index of 9× 10-5 K-1.

Original languageEnglish (US)
Article number111108
JournalApplied Physics Letters
Volume91
Issue number11
DOIs
StatePublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Hofstetter, D., Bonetti, Y., Giorgetta, F. R., El-Shaer, A. H., Bakin, A., Waag, A., Schmidt-Grund, R., Schubert, M., & Grundmann, M. (2007). Demonstration of an ultraviolet ZnO-based optically pumped third order distributed feedback laser. Applied Physics Letters, 91(11), [111108]. https://doi.org/10.1063/1.2783965