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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 1, Iss. 7 — Nov. 1, 2011
  • pp: 1307–1318

Spectral linewidth narrowing and intensity enhancement of the 5G65I8 hypersensitive transition in uv-blue up-conversion from Ho3+ activated Al(NO3)3-SiO2 sol-gel glass

S. Hazarika and Reeta Rajbonshi  »View Author Affiliations


Optical Materials Express, Vol. 1, Issue 7, pp. 1307-1318 (2011)
http://dx.doi.org/10.1364/OME.1.001307


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Abstract

Uv-blue up-conversion at 365, 407 and 436 nm is reported in Ho3+ activated Al (NO3)3-SiO2 sol-gel glass under 641nm excitation. Large intensity enhancement and spectral linewidth narrowing is observed for the 5G65I8 ﴾436 nm﴿ hypersensitive transition in up-conversion compared to its luminescence and is attributed to amplified spontaneous emission (ASE).The influence of linewidth narrowing on emission properties of the transition is quantitatively analyzed. Using theoretical rate equations in steady state the proposed energy transfer routes for populating higher emitting states in the up-conversion are verified.

© 2011 OSA

OCIS Codes
(140.3610) Lasers and laser optics : Lasers, ultraviolet
(160.2750) Materials : Glass and other amorphous materials
(300.6540) Spectroscopy : Spectroscopy, ultraviolet
(140.3613) Lasers and laser optics : Lasers, upconversion

ToC Category:
Laser Materials

History
Original Manuscript: August 2, 2011
Revised Manuscript: October 14, 2011
Manuscript Accepted: October 15, 2011
Published: October 21, 2011

Citation
S. Hazarika and Reeta Rajbonshi, "Spectral linewidth narrowing and intensity enhancement of the 5G65I8 hypersensitive transition in uv-blue up-conversion from Ho3+ activated Al(NO3)3-SiO2 sol-gel glass," Opt. Mater. Express 1, 1307-1318 (2011)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-1-7-1307


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