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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 14 — May. 10, 2006
  • pp: 3378–3381

Dynamic optical limiting experiments on vanadium dioxide and vanadium pentoxide thin films irradiated by a laser beam

Weiping Wang, Yongquan Luo, Dayong Zhang, and Fei Luo  »View Author Affiliations


Applied Optics, Vol. 45, Issue 14, pp. 3378-3381 (2006)
http://dx.doi.org/10.1364/AO.45.003378


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Abstract

Vanadium dioxide ( VO 2 ) and vanadium pentoxide ( V 2 O 5 ) thin films are irradiated by a near-infrared continuous-wave laser beam and the dynamic optical limiting performance is measured. The temperature varying with time of the films induced by a laser beam is also recorded by an IR thermal sensor. Under the irradiation of a laser beam with an intensity of 255 W / cm 2 and a spot diameter of 2   mm , the laser beam transmittance of the VO 2 film decreases from 47 % before phase transition to 28 % after phase transition, and the response time is 200   ms ; the laser beam transmittance of the V 2 O 5 film decreases from 51 % before phase transition to 24 % after phase transition, and the response time is 40   ms . The optical limiting is realized by this laser heating-induced phase transition.

© 2006 Optical Society of America

OCIS Codes
(120.6780) Instrumentation, measurement, and metrology : Temperature
(140.3360) Lasers and laser optics : Laser safety and eye protection
(140.6810) Lasers and laser optics : Thermal effects
(310.6860) Thin films : Thin films, optical properties

History
Original Manuscript: September 16, 2005
Revised Manuscript: November 3, 2005
Manuscript Accepted: December 2, 2005

Citation
Weiping Wang, Yongquan Luo, Dayong Zhang, and Fei Luo, "Dynamic optical limiting experiments on vanadium dioxide and vanadium pentoxide thin films irradiated by a laser beam," Appl. Opt. 45, 3378-3381 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-14-3378

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