Effects of liquid crystals on diffractive coupling in a diode laser external cavity

J. Michael Finlan, Scott M. Hamilton, James R. Leger

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Using a seven-element gain-guided AlGaAs diode laser array, we have established an external cavity which relies on weak diffractive coupling for its operation. Collimation of the lasers is achieved using a binary-optics microlens array. A nematic liquid crystal phase modulator is placed in the image plane of the lenslet array to provide individual phase control of each laser stripe. We show that the liquid crystal phase modulator is capable of establishing partial coherence by independent adjustment of the laser optical path lengths.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsDan Botez, Luis Figueroa
PublisherPubl by Int Soc for Optical Engineering
Pages377-384
Number of pages8
ISBN (Print)0819402605
StatePublished - Dec 1 1990
EventLaser-Diode Technology and Applications II - Los Angeles, CA, USA
Duration: Jan 16 1990Jan 19 1990

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1219
ISSN (Print)0277-786X

Conference

ConferenceLaser-Diode Technology and Applications II
CityLos Angeles, CA, USA
Period1/16/901/19/90

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