Title :
Spectral splitting of first higher order modes in rectangular oxide-apertured vertical cavity lasers
Author :
Chang, K.Y. ; Woodhead, J. ; Roberts, J.S. ; Robson, P.N.
Author_Institution :
Dept. of Electron. & Electr. Eng., Sheffield Univ., UK
fDate :
9/2/1999 12:00:00 AM
Abstract :
Geometric anisotropy in the oxide aperture shape of a VCSEL causes spectral splitting between the otherwise degenerate higher order TEM01 and TEM10 modes. For a given aperture thickness, the degree of splitting is dependent on the aperture aspect ratio and average size. This splitting can be calculated using a scalar variational method
Keywords :
laser modes; surface emitting lasers; variational techniques; VCSEL; anisotropy; aspect ratio; higher order mode; rectangular oxide aperture; scalar variational method; spectral splitting; vertical cavity laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19991025
