Optically pumped GaN/AlGaN separate-confinement heterostructure laser grown along the (1120) nonpolar direction
- Institute of High Pressure Physics, Polish Academy of Sciences, ul. Sokolowska 29/37, 01-142 Warsaw (Poland)
This letter concerns experiments on optically pumped GaN/AlGaN separate-confinement heterostructure laser structures grown by plasma assisted molecular beam epitaxy. The structures were grown along the (1120) nonpolar crystallographic direction on a bulk GaN substrate. Different widths of GaN quantum wells were applied in the studied structures. Laser action is clearly demonstrated by the spontaneous emission saturation, abrupt line narrowing, and strong TE polarization of output light. A lasing threshold was reached at an excitation power density of 260 kW/cm{sup 2} for a 700-{mu}m-long cavity at room temperature.
- OSTI ID:
- 20971835
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 8 Vol. 90; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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