Title :
Polarization control of vertical-cavity surface-emitting lasers by asymmetric oxide-aperture
Author :
Kyoung-Ho Ha ; Yong-Hee Lee
Author_Institution :
Dept. of Phys., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
fDate :
Aug. 30 1999-Sept. 3 1999
Abstract :
Commercial applications of vertical-cavity surface-emitting lasers (VCSEL) are beginning to show up owing to rapid improvement of the VCSEL major characteristics. Nevertheless, polarization sensitive applications such as the magneto-optic disk or coherence detection are restricted, because VCSELs have no preference for a specific polarization. We propose and demonstrate a simple and novel polarization control scheme which uses an asymmetric Al-oxide aperture. This polarization control mechanism is based on the expectation that the scattering losses along two orthogonal polarization directions are not exactly the same when electromagnetic waves pass through a narrow dielectric slit.
Keywords :
laser feedback; light polarisation; semiconductor lasers; surface emitting lasers; BPM calculation; asymmetric oxide-aperture; narrow dielectric slit; optical feedback; orthogonal polarization directions; polarization control; scattering losses; vertical-cavity surface-emitting lasers; Apertures; Electromagnetic wave polarization; Laser theory; Light scattering; Optical control; Optical polarization; Optical scattering; Particle scattering; Surface emitting lasers; Vertical cavity surface emitting lasers;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on
Conference_Location :
Seoul, South Korea
Print_ISBN :
0-7803-5661-6
DOI :
10.1109/CLEOPR.1999.817886