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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 36, Iss. 22 — Nov. 15, 2011
  • pp: 4431–4433

Superior optical limiting, stabilization, and spatio-temporal reshaping of ultrashort laser pulses in an opto-stable intrinsic polymer film

Guang S. He, Heong S. Oh, and Paras. N. Prasad  »View Author Affiliations


Optics Letters, Vol. 36, Issue 22, pp. 4431-4433 (2011)
http://dx.doi.org/10.1364/OL.36.004431


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Abstract

A chemically modified poly(fluorene-alt-benzothiadiazole) (PFBT) polymer film is reported to exhibit high two-photon absorbing capability and chemical/physical stability upon the action of high-power laser pulses of 780 nm wavelength and 160 fs duration. A nonlinear transmission measurement is conducted by varying the input intensity from 20 to 600 GW / cm 2 , the corresponding nonlinear transmission of a 70 μm thick film is reduced from 0.8 to 0.18, indicating a superior optical limiting behavior. In the meantime, intensity fluctuation of laser pulses can be significantly reduced after passing through the same film sample. Based on the intensity-dependent nonlinear attenuation mechanism, a straightforward optical reshaping effect on spatio-temporal profiles of the laser pulses has also been demonstrated.

© 2011 Optical Society of America

OCIS Codes
(190.4180) Nonlinear optics : Multiphoton processes
(320.2250) Ultrafast optics : Femtosecond phenomena

ToC Category:
Nonlinear Optics

History
Original Manuscript: August 4, 2011
Revised Manuscript: September 29, 2011
Manuscript Accepted: September 30, 2011
Published: November 15, 2011

Citation
Guang S. He, Heong S. Oh, and Paras. N. Prasad, "Superior optical limiting, stabilization, and spatio-temporal reshaping of ultrashort laser pulses in an opto-stable intrinsic polymer film," Opt. Lett. 36, 4431-4433 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-22-4431

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