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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 28 — Oct. 1, 2003
  • pp: 5684–5692

Dichroic ultraviolet light filters

Christoph Kocher, Christoph Weder, and Paul Smith  »View Author Affiliations


Applied Optics, Vol. 42, Issue 28, pp. 5684-5692 (2003)
http://dx.doi.org/10.1364/AO.42.005684


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Abstract

With the intention to produce dichroic filters for use in photoluminescent systems that rely on polarized UV light, we synthesized a number of linear, dichroic dyes, which absorb mainly in the near-UV range of the electromagnetic spectrum. These dyes were designed for compatibility with common thermoplastic polymers such as linear low-density poly(ethylene), poly(ethylene terephthalate), and polyamide-12. Films of these host polymers that consisted of 0.2% by weight of various dichroic UV dyes were produced by common melt-processing schemes. Uniaxial drawing of these films yielded highly dichroic UV filters with dichroic ratios in absorption that in some cases exceeded 100. The fact that these free-standing films display little or no coloration and are environmentally stable makes them useful for various applications that involve generation of polarized UV light.

© 2003 Optical Society of America

OCIS Codes
(120.2440) Instrumentation, measurement, and metrology : Filters
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(160.2540) Materials : Fluorescent and luminescent materials
(160.4670) Materials : Optical materials
(260.5430) Physical optics : Polarization
(300.6540) Spectroscopy : Spectroscopy, ultraviolet

History
Original Manuscript: February 14, 2003
Revised Manuscript: July 3, 2003
Published: October 1, 2003

Citation
Christoph Kocher, Christoph Weder, and Paul Smith, "Dichroic ultraviolet light filters," Appl. Opt. 42, 5684-5692 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-28-5684

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