Optical detection of ultrasound using AFC-based quantum memory technique in cryogenic rare earth ion doped crystals

Taylor, Luke R., McAuslan, David L. and Longdell, Jevon J. (2013). Optical detection of ultrasound using AFC-based quantum memory technique in cryogenic rare earth ion doped crystals. In: Photons Plus Ultrasound: Imaging and Sensing 2013. Photons Plus Ultrasound: Imaging and Sensing 2013, San Francisco, CA, (). 3 - 5 February 2013. doi:10.1117/12.2003418

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Author Taylor, Luke R.
McAuslan, David L.
Longdell, Jevon J.
Title of paper Optical detection of ultrasound using AFC-based quantum memory technique in cryogenic rare earth ion doped crystals
Conference name Photons Plus Ultrasound: Imaging and Sensing 2013
Conference location San Francisco, CA
Conference dates 3 - 5 February 2013
Proceedings title Photons Plus Ultrasound: Imaging and Sensing 2013
Journal name Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Place of Publication Bellingham, WA United States
Publisher S P I E - International Society for Optical Engineering
Publication Year 2013
Year available 2013
Sub-type Fully published paper
DOI 10.1117/12.2003418
Open Access Status
ISBN 9780819493507
ISSN 1605-7422
Volume 8581
Total pages 10
Language eng
Abstract/Summary We present results of a novel and highly sensitive technique for the optical detection of ultrasound using the selective storage of frequency shifted photons in an inherently highly efficient and low noise atomic frequency comb (AFC) based quantum memory. The ultrasound 'tagged' optical sidebands are absorbed within a pair of symmetric AFCs, generated via optical pumping in a Pr3+:Y2SiO5 sample (tooth separation Δ = 150 kHz, comb finesse fc ∼ 2 and optical depth αL ∼ 2), separated by twice the ultrasound modulation frequency (1.5 MHz) and centered on either side of a broad spectral pit (1.7 MHz width) allowing transmission of the carrier. The stored sidebands are recovered with 10-20% efficiency as a photon echo (as defined by the comb parameters), and we demonstrate a record 49 dB discrimination between the sidebands and the carrier pulse, high discrimination being important for imaging tissues at depth. We further demonstrate detector limited discrimination (∼29 dB) using a highly scattered beam, confirming that the technique is immune to speckle decorrelation. We show that it also remains valid in the case of optically thin samples, and thus represents a significant improvement over other ultrasound detection methods based on rare-earth-ion-doped crystals. These results strongly suggest the suitability of our technique for high-resolution non-contact real-time imaging of biological tissues.
Subjects 3107 Atomic and Molecular Physics, and Optics
2504 Electronic, Optical and Magnetic Materials
2502 Biomaterials
2741 Radiology Nuclear Medicine and imaging
Keyword Atomic frequency comb
Medical imaging
Optical detection of ultrasound
Quantum memory
Rare earth ions
Ultrasound-modulated optical tomography
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Mathematics and Physics
Official 2014 Collection
 
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