Title :
Emission of coherent "black beams" from coupled VCSEL arrays
Author :
Scheuer, J. ; Gross, Y. ; Yadin, Y. ; Orenstein, R.
Author_Institution :
Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
Abstract :
We present experimentally and theoretically coupled VCSELs arrays with novel emission patterns, in which each VCSEL element is emitting an optical vortex (or several vortices). The coupled vortices emission is carrying more information (the vortices "charge"), more robust and in addition the vortex "charge" removes the anti-phase coupling obstacle. This added flexibility may assist in broadening the use of coherent laser arrays for interconnection applications. We examined the transverse intensity patterns emerging from coherent arrays of proton implanted, medium area VCSELs. The active layer consisted of three 8 nm InGaAs wells.
Keywords :
III-V semiconductors; gallium arsenide; indium compounds; optical interconnections; quantum well lasers; semiconductor laser arrays; vortices; 8 nm; InGaAs; InGaAs MQW lasers; VCSEL element; active layer; anti-phase coupling obstacle; coherent arrays; coherent black beam emission; coherent laser arrays; coupled VCSEL arrays; coupled VCSELs arrays; emission patterns; medium area VCSEL; optical interconnection; optical vortex; proton implanted; transverse intensity patterns; Interference; Laser mode locking; Noise measurement; Optical arrays; Optical coupling; Optical vortices; Phase measurement; Phased arrays; Stimulated emission; Vertical cavity surface emitting lasers;
Conference_Titel :
Nanostructures and Quantum Dots/WDM Components/VCSELs and Microcavaties/RF Photonics for CATV and HFC Systems, 1999 Digest of the LEOS Summer Topical Meetings
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-5633-0
DOI :
10.1109/LEOSST.1999.794720
