Title :
Directional light output from photonic-wire microcavity semiconductor lasers
Author :
Zhang, J.P. ; Chu, D.Y. ; Wu, S.L. ; Bi, W.G. ; Tiberio, R.C. ; Tu, C.W. ; Ho, S.T.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Northwestern Univ., Evanston, IL, USA
Abstract :
We have obtained directional light output from a recently realized InGaAsP photonic-wire microcavity ring lasers. The output was achieved by fabricating a 0.45-μm-wide U-shape waveguide next to a 10-μm diameter microcavity ring laser. The laser has a threshold pump power of around 124 μW when optically pumped at 514 nm. It is comparable to the former structure without output coupling. The output coupling efficiency can be controlled carefully by choosing the spacing between the laser cavity and the waveguide.
Keywords :
III-V semiconductors; gallium arsenide; gallium compounds; indium compounds; laser cavity resonators; optical couplers; optical pumping; quantum well lasers; ring lasers; semiconductor quantum wires; 0.45 mum; 10 mum; 124 muW; 514 nm; InGaAsP; InGaAsP photonic-wire microcavity ring lasers; U-shape waveguide; directional light output; laser cavity; microcavity ring laser; optically pumped; output coupling; output coupling efficiency; photonic-wire microcavity semiconductor lasers; quantum well lasers; threshold pump power; Laser excitation; Microcavities; Optical pumping; Optical waveguides; Power lasers; Pump lasers; Ring lasers; Semiconductor lasers; Semiconductor waveguides; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
