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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 15 — Aug. 1, 2008
  • pp: 1687–1689

Photochromism induced by infrared two-photon absorption

Mitsunori Saito and Yoshinori Takahashi  »View Author Affiliations

Optics Letters, Vol. 33, Issue 15, pp. 1687-1689 (2008)

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An IR laser of 940 nm wavelength induced photochromic reaction in acrylate that contained both spirobenzopyran and rare-earth doped oxide ( Gd 2 O 2 S : Yb Er ) . The rare-earth elements were excited by two 940 nm photons and emitted a 550 nm photon, which caused photochromic isomerization of spirobenzopyran. This acrylate turned to its original orange color by either thermal relaxation or ultraviolet irradiation, and was bleached again by IR laser irradiation.

© 2008 Optical Society of America

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(190.7220) Nonlinear optics : Upconversion
(260.3060) Physical optics : Infrared
(260.5130) Physical optics : Photochemistry

ToC Category:
Physical Optics

Original Manuscript: March 24, 2008
Manuscript Accepted: June 20, 2008
Published: July 24, 2008

Mitsunori Saito and Yoshinori Takahashi, "Photochromism induced by infrared two-photon absorption," Opt. Lett. 33, 1687-1689 (2008)

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