Control of vertical-cavity laser polarization with anisotropic transverse cavity geometries

We show the two-fold polarization degeneracy of etched air-post vertical-cavity surface emitting laser diodes can be lifted and a dominant polarization state selected through use of anisotropic transverse laser cavity geometries. For lasers with rhombus-shaped cavities, fundamental mode lasing emiss...

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Veröffentlicht in:	IEEE photonics technology letters 1994-01, Vol.6 (1), p.40-42
Hauptverfasser:	Choquette, K.D., Leibenguth, R.E.
Format:	Artikel
Sprache:	eng
Schlagworte:	426002 - Engineering- Lasers & Masers- (1990-) Anisotropic magnetoresistance ANISOTROPY DESIGN Diode lasers ENGINEERING Etching Exact sciences and technology Fundamental areas of phenomenology (including applications) Geometrical optics LASER CAVITIES Laser modes LASERS Optical control Optics Physics POLARIZATION SEMICONDUCTOR DEVICES SEMICONDUCTOR LASERS Semiconductor lasers laser diodes SOLID STATE LASERS Surface emitting lasers Threshold current Vertical cavity surface emitting lasers
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Zusammenfassung:	We show the two-fold polarization degeneracy of etched air-post vertical-cavity surface emitting laser diodes can be lifted and a dominant polarization state selected through use of anisotropic transverse laser cavity geometries. For lasers with rhombus-shaped cavities, fundamental mode lasing emission linearly polarized along one specified crystal axis is obtained up to twice the threshold current. For dumbbell-shaped lasers, fundamental mode lasing emission linearly polarized along one specified crystal axis is maintained over the entire operating range of the device producing a maximum orthogonal polarization suppression ratio of 14 dB.< >
ISSN:	1041-1135 1941-0174
DOI:	10.1109/68.265883