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Title:Electrical characterization of 1 X 2 coherent VASEL arrays
Author(s):Hwang, Joseph
Contributor(s):Choquette, Kent D.
Subject(s):semiconductor lasers
photonics
VCSEL
laser arrays
electrical derivative analysis
coherently coupled arrays
Abstract:Two adjacent semiconductor vertical cavity surface-emitting lasers (VCSELs) can be tuned to coherent operation where optically-coupled VCSELs exhibit array “super-modes”, unique from individual laser cavity optical modes. Coherent VCSEL arrays have several important device properties for potential applications including increasing intensity modulation rate for high speed optical communications and all-optical beam-steering. Currently, however, coherently coupled operation is only recognized from far-field optical intensity distribution measurements. This thesis reports the investigation of both optical and electrical characteristics of 2 x 1 VCSEL arrays to identify an electrical “signature” or series resistance features in coupled lasers as a means for detecting and biasing to coherent operation. Measurement methods using two varying inputs for characterizing the VCSEL arrays are demonstrated and a voltage derivative analysis is presented.
Issue Date:2019-05
Genre:Other
Type:Text
Language:English
URI:http://hdl.handle.net/2142/104018
Date Available in IDEALS:2019-06-14


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