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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 3 — Mar. 1, 2010
  • pp: 577–581

Laser-induced Bessel beams can realize fast all-optical switching in gold nanosol prepared by pulsed laser ablation

Santhi Ani Joseph, Gaurav Sharma, Misha Hari, S. Mathew, P. Radhakrishnan, and V. P.N. Nampoori  »View Author Affiliations


JOSA B, Vol. 27, Issue 3, pp. 577-581 (2010)
http://dx.doi.org/10.1364/JOSAB.27.000577


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Abstract

We demonstrate the possibility of realizing, all-optical switching in gold nanosol. Two overlapping laser beams are used for this purpose, due to which a low-power beam passing collinear to a high-power beam will undergo cross phase modulation and thereby distort the spatial profile. This is taken to advantage for performing logic operations. We have also measured the threshold pump power to obtain a NOT gate and the minimum response time of the device. Contrary to the general notion that the response time of thermal effects used in this application is of the order of milliseconds, we prove that short pump pulses can result in fast switching. Different combinations of beam splitters and combiners will lead to the formation of other logic functions too.

© 2010 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.6810) Lasers and laser optics : Thermal effects
(160.3380) Materials : Laser materials
(190.4870) Nonlinear optics : Photothermal effects
(350.6830) Other areas of optics : Thermal lensing
(160.4236) Materials : Nanomaterials
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 7, 2009
Revised Manuscript: January 22, 2010
Manuscript Accepted: January 26, 2010
Published: February 25, 2010

Citation
Santhi Ani Joseph, Gaurav Sharma, Misha Hari, S. Mathew, P. Radhakrishnan, and V. P. N. Nampoori, "Laser-induced Bessel beams can realize fast all-optical switching in gold nanosol prepared by pulsed laser ablation," J. Opt. Soc. Am. B 27, 577-581 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-3-577

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