Title :
Polarisation anisotropy in asymmetric oxide aperture VCSELs
Author :
Ha, K.H. ; Lee, Y.-H. ; Shin, H.K. ; Lee, K.H. ; Whang, S.M.
Author_Institution :
Dept. of Phys., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
fDate :
7/9/1998 12:00:00 AM
Abstract :
Strong polarisation discrimination is observed from asymmetric oxide-aperture vertical cavity surface emitting lasers (VCSELs). The polarisation state perpendicular to the longer direction of the slit-shaped oxide aperture dominates when the aperture width is <4 μm. Generally, the mode size for TM polarisation is slightly less than that for TE polarisation, indicating polarisation-dependent scattering losses. A 1.4 μm oxide aperture VCSEL gives a polarisation extinction ratio (PER) of up to 184
Keywords :
light polarisation; surface emitting lasers; asymmetric oxide aperture VCSEL; mode size; polarisation anisotropy; polarisation extinction ratio; scattering loss; vertical cavity surface emitting laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19980972
