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 ampli¯cation by the local oscillator re-
veals a window for shot noise limited detection before the signal-to-noise is limited by amplitude °uctuations. 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.
Original language | Undefined |
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Pages | - |
Publication status | Published - 2008 |
Event | SPIE San Jose: Multiphoton Microscopy in the Biomedical Sciences VIII - Duration: 1 Jan 1900 → … |
Conference
Conference | SPIE San Jose |
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Period | 1/01/00 → … |
Keywords
- METIS-247762
- IR-72663