Blue-green optically pumped GaN-based vertical cavity surface emitting laser.

Authors :: Cai, L.-E.
Zhang, J.-Y.
Zhang, B.-P.
Li, S.-Q.
Wang, D.-X.
Shang, J.-Z.
Lin, F.
Lin, K.-C.
Yu, J.-Z.
Wang, Q.-M.
Source :: Electronics Letters (Institution of Engineering & Technology). 7/31/2008, Vol. 44 Issue 16, p972-974. 3p. 1 Diagram, 2 Graphs.
Publication Year :: 2008
Abstract: Blue-green GaN-based vertical cavity surface emitting lasers (VCSELs) were fabricated with two dielectric Ta2O5/ SiO2 distributed Bragg reflectors. Lasing action was observed at a wavelength of 498.8 nm at room temperature under optical pumping. Threshold energy density and emission linewidth were 189 mJ/cm2 and 0.15 nm, respectively. The result demonstrates that blue-green VCSELs can be realised using III-nitride semiconductors. [ABSTRACT FROM AUTHOR]