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Proceedings Paper

Optical recording in the mid-IR in photochromic polymers
Author(s): Victor Weiss; Asher A. Friesem; Valeri Krongauz
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Paper Abstract

Real-time recording of mid-infrared laser radiation in photochromic spiropyran-MMA copolymer materials is investigated. The laser radiation, derived from a CO2 laser, bleached pre-colored merocyanine, thereby converting it back to spiropyran. The exposure sensitivity at 50 percent of the initial merocyanine optical density was about 0.1 J/mm2 at 10.6 micrometers laser wavelength and 0.2 J/mm2 at 10.5 micrometers . The difference of sensitivity at the two laser wavelengths points to differences in thermal energy dissipation mechanisms. The characteristics and examples of imagery, recorded in these photochromics, are presented. A resolution equal or better than 40 lines/mm was achieved.

Paper Details

Date Published: 13 August 1993
PDF: 6 pages
Proc. SPIE 1972, 8th Meeting on Optical Engineering in Israel: Optoelectronics and Applications in Industry and Medicine, (13 August 1993); doi: 10.1117/12.151088
Show Author Affiliations
Victor Weiss, Weizmann Institute of Science (Israel)
Asher A. Friesem, Weizmann Institute of Science (Israel)
Valeri Krongauz, Weizmann Institute of Science (Israel)


Published in SPIE Proceedings Vol. 1972:
8th Meeting on Optical Engineering in Israel: Optoelectronics and Applications in Industry and Medicine

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