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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 30, Iss. 8 — Apr. 15, 2005
  • pp: 875–877

Determination of optical Kerr nonlinearity of a photonic bandgap structure by Z-scan measurement

Jisoo Hwang and J. W. Wu  »View Author Affiliations


Optics Letters, Vol. 30, Issue 8, pp. 875-877 (2005)
http://dx.doi.org/10.1364/OL.30.000875


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Abstract

Through analysis of the dispersion relation in a photonic bandgap structure, the effective optical Kerr nonlinearity that determines a Z-scan profile particularly near the stop-band edges, is derived. Near and inside the stop band, the nonlinear optical phase change that originates from an off-resonant response is converted into a change in nonlinear optical intensity through Bragg reflection. The Z-scan measurement of a cholesteric liquid-crystal photonic bandgap structure confirmed that off-resonant Kerr nonlinearity is responsible for the characteristic open-aperture Z-scan profiles near the stop-band edges.

© 2005 Optical Society of America

OCIS Codes
(190.3270) Nonlinear optics : Kerr effect
(190.4400) Nonlinear optics : Nonlinear optics, materials

Citation
Jisoo Hwang and J. W. Wu, "Determination of optical Kerr nonlinearity of a photonic bandgap structure by Z-scan measurement," Opt. Lett. 30, 875-877 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-8-875

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