University of Illinois Urbana-Champaign

Electrical characterization of 1 X 2 coherent VASEL arrays

Hwang, Joseph

Content Files
ECE499-Sp2019-hwang.pdf

Permalink

https://hdl.handle.net/2142/104018

Description

Title
Electrical characterization of 1 X 2 coherent VASEL arrays
Author(s)
Hwang, Joseph
Contributor(s)
Choquette, Kent D.
Issue Date
2019-05
Keyword(s)
  • semiconductor lasers
  • photonics
  • VCSEL
  • laser arrays
  • electrical derivative analysis
  • coherently coupled arrays
Date of Ingest
2019-06-14T21:33:55Z
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.
Type of Resource
text
Genre of Resource
Other
Language
en
Permalink
http://hdl.handle.net/2142/104018

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