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

The authors demonstrate an optically pumped ZnO distributed feedback laser operating at 383nm. For a large temperature range between 10 and 270K, the device lased in a single longitudinal mode. Mode selection was accomplished via a third order diffraction grating, which was dry etched into a 120nm thick Si3N4 layer deposited on the ZnO active region. They observed a spectral linewidth of 0.4nm, a pump threshold intensity of 0.12MW∕cm2, and a peak output power of 14mW. From wavelength versus temperature measurements, they deduced a temperature tuning coefficient of the ZnO refractive index of 9×10−5K−1.

[1]  Michael Heuken,et al.  MBE growth of ZnO layers on sapphire employing hydrogen peroxide as an oxidant , 2006 .

[2]  F. H. Nicoll,et al.  ULTRAVIOLET ZnO LASER PUMPED BY AN ELECTRON BEAM , 1966 .

[3]  Robert P. H. Chang,et al.  Ultraviolet Lasing in High-Order Bands of Three-Dimensional ZnO Photonic Crystals , 2006 .

[4]  Mathias Schubert,et al.  Low temperature photoluminescence and infrared dielectric functions of pulsed laser deposited ZnO thin films on silicon , 2006 .

[5]  H. Kogelnik,et al.  Coupled‐Wave Theory of Distributed Feedback Lasers , 1972 .

[6]  E. Palik.  Handbook of Optical Constants of Solids , 1997 .

[7]  Marius Grundmann,et al.  Dielectric functions (1 to 5 eV) of wurtzite MgXZn1 -XO (x≤0.29) thin films , 2003 .

[8]  P. Perlin,et al.  Optically pumped GaN∕AlGaN separate-confinement heterostructure laser grown along the (112¯0) nonpolar direction , 2007 .

[9]  S. Ho,et al.  Optically-pumped ultraviolet microdisk laser on a silicon substrate , 2004, Conference on Lasers and Electro-Optics, 2004. (CLEO)..

[10]  Robert P. H. Chang,et al.  Random laser action in semiconductor powder , 1999 .

[11]  Daniel Hofstetter,et al.  Realization of a complex-coupled InGaN/GaN-based optically pumped multiple-quantum-well distributed-feedback laser , 2000 .

[12]  Masashi Kawasaki,et al.  Room-temperature ultraviolet laser emission from self-assembled ZnO microcrystallite thin films , 1998 .

[13]  Yiying Wu,et al.  Room-Temperature Ultraviolet Nanowire Nanolasers , 2001, Science.

[14]  Shu Ping Lau,et al.  High-temperature random lasing in ZnO nanoneedles , 2006 .