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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 2 — Jan. 28, 2013
  • pp: 2212–2219

The lifetime of the triplet excited state and modulation characteristics of all-optical switching in phenoxy-phthalocyanines liquid

Chengbao Yao, Yundong Zhang, Wenjun Sun, Changqiu Yu, Jin Li, and Ping Yuan  »View Author Affiliations

Optics Express, Vol. 21, Issue 2, pp. 2212-2219 (2013)

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We present our experimental results on the measurements of excited state dynamics in 2, 9, 16, 23-phenoxy-phthalocyanine (Pc1) and 2, 9, 16, 23-phenoxy-phthalocyanine-zinc (Pc2) using the pump-probe experiment. The results show that the lifetime of the first triplet excited state of the Pc2 longer than Pc1. The lifetimes of the triplet excited state for Pc2 and Pc1 are 12.8 μs and 10.1 μs at the same intensity, respectively. Moreover, analysis of modulation characteristics of all-optical switching (A-OS) shows that the stronger the light intensity of the pump light is, the smaller the normalized transmittance is, and the lower the A-OS response time is. The consequences of such short lifetimes are also discussed in view of the strong A-OS properties of these molecules.

© 2013 OSA

OCIS Codes
(160.4890) Materials : Organic materials
(190.0190) Nonlinear optics : Nonlinear optics
(230.1150) Optical devices : All-optical devices

ToC Category:
Nonlinear Optics

Original Manuscript: November 26, 2012
Revised Manuscript: January 9, 2013
Manuscript Accepted: January 10, 2013
Published: January 22, 2013

Chengbao Yao, Yundong Zhang, Wenjun Sun, Changqiu Yu, Jin Li, and Ping Yuan, "The lifetime of the triplet excited state and modulation characteristics of all-optical switching in phenoxy-phthalocyanines liquid," Opt. Express 21, 2212-2219 (2013)

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