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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 11 — Jun. 1, 2012
  • pp: 1877–1879

Enhancement of ultrafast nonlinear optical response of silicon nanocrystals by boron-doping

Kenji Imakita, Masahiko Ito, Ryo Naruiwa, Minoru Fujii, and Shinji Hayashi  »View Author Affiliations


Optics Letters, Vol. 37, Issue 11, pp. 1877-1879 (2012)
http://dx.doi.org/10.1364/OL.37.001877


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Abstract

Nonlinear optical responses of boron (B)-doped silicon nanocrystals (Si-ncs) embedded in borosilicate glass were studied by z-scan and optical Kerr gate methods under femtosecond excitation at 780 nm. The nonlinear refractive index (n2) and the two photon absorption coefficients (β) of B-doped Si-ncs were found to be 3 times enhanced, compared to those of intrinsic Si-ncs. The response time was faster than 100 fs even at 5 K. The origin of the large nonlinear optical response was discussed, based on the experimental data of n2, electron spin resonance spectra, and linear absorption spectra.

© 2012 Optical Society of America

OCIS Codes
(190.4400) Nonlinear optics : Nonlinear optics, materials
(320.2250) Ultrafast optics : Femtosecond phenomena

ToC Category:
Nonlinear Optics

History
Original Manuscript: March 7, 2012
Revised Manuscript: April 3, 2012
Manuscript Accepted: April 5, 2012
Published: May 22, 2012

Citation
Kenji Imakita, Masahiko Ito, Ryo Naruiwa, Minoru Fujii, and Shinji Hayashi, "Enhancement of ultrafast nonlinear optical response of silicon nanocrystals by boron-doping," Opt. Lett. 37, 1877-1879 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-11-1877

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