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Volumn 20, Issue 17, 2008, Pages 3199-3203

Thick optical-quality films of substituted polyacetylenes with large, ultrafast third-order nonlinearities and application to image correlation

Author keywords

[No Author keywords available]

Indexed keywords

ABS RESINS; ACETYLENE; CORRELATION METHODS; MONOMERS; OPTICAL CORRELATION; POLYACETYLENES; POLYMERS; TELEVISION CAMERA TUBES;

EID: 54949138050     PISSN: 09359648     EISSN: None     Source Type: Journal    
DOI: 10.1002/adma.200800664     Document Type: Article
Times cited : (18)

References (43)
  • 23
    • 54949097077 scopus 로고    scopus 로고
    • The time to gelation was defined, somewhat arbitrarily, as the point after which the viscosity had increased to an extent that it was prohibitively difficult to transfer the polymerizing liquid mixture from the mixing vial to the glass substrate
    • The time to gelation was defined, somewhat arbitrarily, as the point after which the viscosity had increased to an extent that it was prohibitively difficult to transfer the polymerizing liquid mixture from the mixing vial to the glass substrate.
  • 24
    • 54949117270 scopus 로고
    • Ph.D. Thesis, California Institute of Technology
    • C. B. Gorman, Ph.D. Thesis, California Institute of Technology 1992.
    • (1992)
    • Gorman, C.B.1
  • 26
    • 54949091248 scopus 로고    scopus 로고
    • The optical quality of the films was gauged both by the optical losses observed in the Vis-NIR absorption spectra, specifically in the 1300-1550 nm regime, as well as the amount of distortion observed on a laser beam (operating in the same spectral region) after passing through the film. This provided some measure of both the optical scattering losses associated with crystallinity of the films as well as their overall morphology
    • The optical quality of the films was gauged both by the optical losses observed in the Vis-NIR absorption spectra, specifically in the 1300-1550 nm regime, as well as the amount of distortion observed on a laser beam (operating in the same spectral region) after passing through the film. This provided some measure of both the optical scattering losses associated with crystallinity of the films as well as their overall morphology.
  • 31
    • 54949095507 scopus 로고    scopus 로고
    • Polarization-dependent DFWM measurements as well as careful fitting to Z-scan data also support a non-resonant third-order nonlinearity. This is consistent with the large detuning of the excitation wavelengths from the lowest energy one-photon electronic resonance. Furthermore, the experimentally measured phase of χ(3) across the NIR is also relatively small, which is also consistent with two-photon resonances not being a major contributor to the nonlinear response
    • (3) across the NIR is also relatively small, which is also consistent with two-photon resonances not being a major contributor to the nonlinear response.
  • 32
    • 54949127239 scopus 로고    scopus 로고
    • It should be noted that larger third-order nonlinearities in this spectral region have been found for trans-polyacetylene prepared by the Shirakawa method (see ref. 10, However, these nonlinearities were determined via third-harmonic generation measurements and therefore reflect χ(3, 3ω;ω,ω,ω, This nonlinearity is known to be enhanced through both two- and three-photon resonance enhancement. These values would therefore be reduced accordingly for nonresonant values of χ(3, ω;ω,-ω,ω) as reported herein
    • (3)(-ω;ω,-ω,ω) as reported herein.
  • 33
    • 54949139314 scopus 로고    scopus 로고
    • 2) and the two-photon absorption coefficient (β) can be found in Ref. [1].
    • 2) and the two-photon absorption coefficient (β) can be found in Ref. [1].
  • 34
    • 0038528533 scopus 로고    scopus 로고
    • -1, respectively.
    • -1, respectively.
  • 41
    • 54949106316 scopus 로고    scopus 로고
    • E. W. Van Stryland, M. Sheik-Bahae, in Z-scan technique for nonlinear materials characterization, Characterization Techniques and Tabulations for Organic Nonlinear Materials, (Eds: M. G. Kuzyk, C. W. Dirk), Marcel Dekker, New York, NY 1998, pp. 655-692.
    • E. W. Van Stryland, M. Sheik-Bahae, in "Z-scan technique for nonlinear materials characterization", Characterization Techniques and Tabulations for Organic Nonlinear Materials, (Eds: M. G. Kuzyk, C. W. Dirk), Marcel Dekker, New York, NY 1998, pp. 655-692.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.