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Optics Letters

Optics Letters


  • Vol. 36, Iss. 17 — Sep. 1, 2011
  • pp: 3431–3433

Tunable nonlinear absorption of hydrogenated nanocrystalline silicon

Y. J. Ma, J. I. Oh, D. Q. Zheng, W. A. Su, and W. Z. Shen  »View Author Affiliations

Optics Letters, Vol. 36, Issue 17, pp. 3431-3433 (2011)

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Nonlinear absorption (NLA) of hydrogenated nanocrystalline silicon (nc-Si:H) has been investigated through the open aperture Z-scan method for the photon energy of the incident irradiance slightly less than the bandgap of the sample. NLA responses have been observed to be highly sensitive to the wavelength and intensity of the incident irradiance as well as to the bandgap of the sample, indicating greatly tunable NLA of nc-Si:H. The band tail of nc-Si:H appears to play a crucial role in such NLA responses.

© 2011 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(230.1150) Optical devices : All-optical devices
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
(160.4236) Materials : Nanomaterials
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices

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Original Manuscript: July 5, 2011
Revised Manuscript: August 7, 2011
Manuscript Accepted: August 7, 2011
Published: August 29, 2011

Y. J. Ma, J. I. Oh, D. Q. Zheng, W. A. Su, and W. Z. Shen, "Tunable nonlinear absorption of hydrogenated nanocrystalline silicon," Opt. Lett. 36, 3431-3433 (2011)

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