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16 March 2023 Ultra-compact widely tunable dual-wavelength fiber-based sources for CARS and SRS imaging (Conference Presentation)
Armin Hoffmann, Florian Just, Christian Gaida, Sven Breitkopf, Oliver Herrfurth, Tobias Meyer-Zedler, Jürgen Popp, Tino Eidam, Jens Limpert
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Proceedings Volume PC12391, Label-free Biomedical Imaging and Sensing (LBIS) 2023; PC123910S (2023) https://doi.org/10.1117/12.2649987
Event: SPIE BiOS, 2023, San Francisco, California, United States
Abstract
Fiber-based laser sources for Coherent Anti-Stokes Raman scattering (CARS) microscopy and Stimulated Raman Spectroscopy (SRS) have been successfully used for label-free bio-imaging in the past. We present an improved design of a dual-wavelength source for CARS and SRS enabling a wider frequency-range from <630cm^-1 up to 2250cm^-1 while the tuning time remains in the range of a few seconds over the full range. The system is fiber-based and thus resistant to detrimental thermal effects even at output powers in the Watt-range with improved tunability of Stokes and pump power. Repetition rates up to 10MHz are possible and the spectral width of the signals is <15cm^-1 enabling most applications.
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Armin Hoffmann, Florian Just, Christian Gaida, Sven Breitkopf, Oliver Herrfurth, Tobias Meyer-Zedler, Jürgen Popp, Tino Eidam, and Jens Limpert "Ultra-compact widely tunable dual-wavelength fiber-based sources for CARS and SRS imaging (Conference Presentation)", Proc. SPIE PC12391, Label-free Biomedical Imaging and Sensing (LBIS) 2023, PC123910S (16 March 2023); https://doi.org/10.1117/12.2649987
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KEYWORDS
CARS tomography
Laser sources
Microscopy
Fiber lasers
Raman spectroscopy
Thermal effects
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