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Proceedings Paper

High-resolution large dynamic range spectral filtering at 800 nm using Tm:YAG crystals
Author(s): Anne Louchet-Chauvet; Romain Lauro; Philippe Goldner; Francois Ramaz; Thierry Chanelière; Jean-Louis Le Gouët
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Paper Abstract

Thulium-doped crystals are considered for programmable filtering. Such a filter can be achieved by Spectral Hole Burning (SHB). One optically pumps the active ions into a long-lived shelving state, opening a narrow transparency window in the crystal absorption band. We investigate a new shelving scheme in Tm:YAG where the thulium ions are pumped into a ground state nuclear Zeeman sublevel, instead of their natural 10ms-lifetime metastable state. The shelving time is increased to several seconds, reducing the residual population in the transparency window by orders of magnitude. This should enhance the filter's dynamic range, which is essential in demanding filtering applications like ultrasound optical tomography.

Paper Details

Date Published: 12 February 2011
PDF: 7 pages
Proc. SPIE 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV, 794805 (12 February 2011); doi: 10.1117/12.874009
Show Author Affiliations
Anne Louchet-Chauvet, Lab. Aimé Cotton, CNRS, Univ. Paris-Sud (France)
Romain Lauro, Lab. Aimé Cotton, CNRS, Univ. Paris-Sud (France)
Philippe Goldner, CNRS, Lab. de Chimie de la Matière Condensée Paris (France)
Francois Ramaz, ESPCI ParisTech, CNRS (France)
Thierry Chanelière, Lab. Aimé Cotton, CNRS, Univ. Paris-Sud (France)
Jean-Louis Le Gouët, Lab. Aimé Cotton, CNRS, Univ. Paris-Sud (France)


Published in SPIE Proceedings Vol. 7948:
Advances in Photonics of Quantum Computing, Memory, and Communication IV
Zameer Ul Hasan; Philip R. Hemmer; Hwang Lee; Charles M. Santori, Editor(s)

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