Stimulated emission from ZnO thin films with high optical gain and low loss
A.-S. GadallahDepartment of Laser Sciences and Interactions, National Institute of Laser Enhanced Sciences 2 , Cairo University, Giza, EgyptK. NomenyoLaboratoire de Nanotechnologie et d'Instrumentation Optique, Institut Charles Delaunay 1 , CNRS UMR 6279, , 12 rue Marie Curie, BP 2060, 10010 Troyes Cedex, FranceC. CouteauCINTRA, CNRS-NTU-Thales UMI 3288 3 , Research Techno Plaza, 50 Nanyang Drive, Border X Block, Level 6, Singapore 637553, SingaporeD. J. RogersG. LérondelLaboratoire de Nanotechnologie et d'Instrumentation Optique, Institut Charles Delaunay 1 , CNRS UMR 6279, , 12 rue Marie Curie, BP 2060, 10010 Troyes Cedex, France
2013en
ABI
Аннотация
Stimulated surface- and edge-emissions were investigated for ZnO thin films grown epitaxially by pulsed laser deposition. The lasing threshold was 0.32 MW/cm2 for surface pumping and 0.5 MW/cm2 for edge pumping, which is significantly lower than thresholds observed previously. A modified variable stripe length method was used to measure the gain, which was 1369 cm−1 for the N-band emission. Losses were measured using the shifting excitation spot method and values of 6.2 cm−1 and 6.3 cm−1 were found for the N-band and P-band, respectively. The measured gain and loss were the highest and lowest (respectively) ever reported for ZnO films.
Перевод пока недоступен
Идентификаторы
Цитирования и источники
Цитирований: 2Использованных источников: 0