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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. 29, Iss. 4 — Apr. 1, 2012
  • pp: 769–773

Observation of magneto-optical effect in extremely dilute ferrofluids under weak magnetic field

Jingjing Sun, Cheng Yin, Changping Zhu, Xianping Wang, Wen Yuan, Pingping Xiao, Xianfeng Chen, and Zhuangqi Cao  »View Author Affiliations


JOSA B, Vol. 29, Issue 4, pp. 769-773 (2012)
http://dx.doi.org/10.1364/JOSAB.29.000769


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Abstract

We propose a novel liquid-core waveguide using water-based ferrofluids as the guiding layer in a symmetrical metal-cladding waveguide structure to investigate the magneto-optical effect of extremely dilute ferrofluids. Owing to the high sensitivity of the ultra-high-order modes, the reflection intensity can be effectively tuned even by a weak magnetic field and the modulated reflectivity exhibits no threshold behavior. Furthermore, by properly adjusting the transmission axes of the polarizer, the detected laser intensity can be magnetic-field independent because the refractive indices for ordinary and extraordinary rays vary oppositely under the external field.

© 2012 Optical Society of America

OCIS Codes
(160.3820) Materials : Magneto-optical materials
(230.7390) Optical devices : Waveguides, planar
(310.6860) Thin films : Thin films, optical properties

ToC Category:
Materials

History
Original Manuscript: December 9, 2011
Revised Manuscript: January 17, 2012
Manuscript Accepted: January 18, 2012
Published: March 26, 2012

Citation
Jingjing Sun, Cheng Yin, Changping Zhu, Xianping Wang, Wen Yuan, Pingping Xiao, Xianfeng Chen, and Zhuangqi Cao, "Observation of magneto-optical effect in extremely dilute ferrofluids under weak magnetic field," J. Opt. Soc. Am. B 29, 769-773 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-4-769

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