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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 10 — May. 15, 2010
  • pp: 1575–1577

Magnetic-field-induced optical bistability in multifunctional Gd 2 O 3 : Er 3 + Yb 3 + upconversion nanophosphor

Sunil K. Singh, Kaushal Kumar, Manish K. Srivastava, Devendra K. Rai, and Shyam B. Rai  »View Author Affiliations


Optics Letters, Vol. 35, Issue 10, pp. 1575-1577 (2010)
http://dx.doi.org/10.1364/OL.35.001575


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Abstract

The effect of an external magnetic field ( 0 1 T ) on the upconversion emission ( λ exc = 976 nm ) of Gd 2 O 3 : Er 3 + Yb 3 + nanocrystalline phosphor has been studied. Optical bistability (hysteresis behavior in the intensity of the optical emission) for different transitions of the Er 3 + ion has been observed for a complete cycle of the magnetic field between 0 and 1 T . The phosphor shows paramagnetic behavior, consistent with the presence of Gd 3 + ions, at room temperature. Interaction between induced magnetization in the Gd 2 O 3 host and the intrinsic magnetic moment of the nanosized clusters of Er 3 + and Yb 3 + ion pairs is proposed to be responsible for the hysteresis behavior.

© 2010 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(190.1450) Nonlinear optics : Bistability
(190.7220) Nonlinear optics : Upconversion

ToC Category:
Nonlinear Optics

History
Original Manuscript: January 13, 2010
Revised Manuscript: March 20, 2010
Manuscript Accepted: April 6, 2010
Published: May 5, 2010

Citation
Sunil K. Singh, Kaushal Kumar, Manish K. Srivastava, Devendra K. Rai, and Shyam B. Rai, "Magnetic-field-induced optical bistability in multifunctional Gd2O3:Er3+∕Yb3+ upconversion nanophosphor," Opt. Lett. 35, 1575-1577 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-10-1575

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