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Proceedings Paper

Shot noise limited heterodyne detection of CARS signals
Author(s): M. Jurna; E. Büttner; J. P. Korterik; C. Otto; I. Rimke; H. L. Offerhaus
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Paper Abstract

We demonstrate heterodyne detection of CARS signals using a cascaded phase-preserving chain to generate the CARS input wavelengths and a coherent local oscillator. The heterodyne amplification by the local oscillator reveals a window for shot noise limited detection before the signal-to-noise is limited by amplitude fluctuations. We demonstrate an improvement in sensitivity by more than 3 orders of magnitude for detection using a photodiode. This will enable CARS microscopy to reveal concentrations below the current mMolar range.

Paper Details

Date Published: 15 February 2008
PDF: 10 pages
Proc. SPIE 6860, Multiphoton Microscopy in the Biomedical Sciences VIII, 68600R (15 February 2008); doi: 10.1117/12.761641
Show Author Affiliations
M. Jurna, Univ. of Twente (Netherlands)
E. Büttner, APE GmbH (Germany)
J. P. Korterik, Univ. of Twente (Netherlands)
C. Otto, Univ. of Twente (Netherlands)
I. Rimke, APE GmbH (Germany)
H. L. Offerhaus, Univ. of Twente (Netherlands)

Published in SPIE Proceedings Vol. 6860:
Multiphoton Microscopy in the Biomedical Sciences VIII
Ammasi Periasamy; Peter T. C. So, Editor(s)

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