TY - GEN
T1 - Characterization of an optically pumped ZnO-based 3rd order distributed feedback laser
AU - Hofstetter, Daniel
AU - Bonetti, Yargo
AU - Baumann, Esther
AU - Giorgetta, Fabrizio R.
AU - El-Shaer, Abdel Hamid
AU - Bakin, Andrey
AU - Waag, Andreas
AU - Schmidt-Grund, Rüdiger
AU - Grundmann, Marius
AU - Schubert, Mathias
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
KW - Distributed feedback laser
KW - Optical pumping
KW - Singlemode operation
KW - ZnO
UR - http://www.scopus.com/inward/record.url?scp=42149118896&partnerID=8YFLogxK
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U2 - 10.1117/12.762128
DO - 10.1117/12.762128
M3 - Conference contribution
AN - SCOPUS:42149118896
SN - 9780819470706
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Zinc Oxide Materials and Devices III
T2 - Zinc Oxide Materials and Devices III
Y2 - 20 January 2008 through 23 January 2008
ER -