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Crystals and Optical Trickery

by

Richard Jarman
Professor of Chemistry
College of DuPage

Friday, January 19, 2007

Dr. Jarman will address features of crystals used for the generation, manipulation and conversion of optical radiation. He will also review the methods used for growth of large single crystals and describe some of the applications in miniaturized lasers and tunable infrared sources.

Bio Sketch
Dr. Jarman has earned his B.A., M.A., and D.Phil (Inorganic Chemistry) from Oxford University. He has 9 years experience as adjunct and full-time faculty in chemistry at the College of DuPage and Waubonsee Community College and over 20 years experience in scientific research and development at Amoco Technology Company and Exxon Research and Engineering Company. Research interests include structure-property relationships in solids, nonlinear optical and laser host materials, miniaturized lasers, processing of optical polymers, amorphous semiconductor devices, rechargeable battery cathode materials, electrochromic materials, zeolites and molecular sieves.

SMSI Minutes 19 Jan. 2007
Meeting again at the Mikuska’s home (which happens too rarely) Dorothy & Bill our most gracious host presented R.H. Jarman who brought crystal samples grown for laser development.

Bill mentioned a possible SMSI award winner for this year: Jeremy D. Pickett-Heaps who has researched diatoms, living cells and green algae.

Richard Jarman gave a brief outline of how lasers work and how new development is needed for diagnostics, missile countermeasures, wind shear detection, etc. Laser output is rigid and narrow. Crystals need to be developed which provide new ranges, have good mechanical properties (low loss and high damage resistance), phase matching, high nonlinear coefficient, sufficient birefringence and direction must have high precision.

From a box he showed samples of optical crystals on which he had worked and talked about problems and time required to make them.

Lithium neodymium tetraphosphate lasers pumped via close-coupling to high-power laser diode arrays.

GJ Dixon, LS Lingvay, RH Jarman - IEEE PHOTON. TECHNOL. LETT., 1989 - csa.com

Lithium neodymium tetraphosphate lasers pumped via close-coupling to high-power laser diode arrays. GJ Dixon, LS Lingvay, RH Jarman Type-II phase-matched KNbO3 optical parametric oscillator WR Bosenberg, RH Jarman - opticsinfobase.org

Optics InfoBase Published by The Optical Society of America. ... 1993

Go to scholar.google.com to see a long list of articles by this amazing researcher.

Jarman then discussed the Bridgeman and Czochralski methods of crystal growth. You had to be there.

Respectfully submitted, Stan Schmidt, Recording Secretary