23 February 2018 Rapid and lossless bandwidth-switching of a fiber-based optical parametric oscillator for multimodal nonlinear microscopy
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Abstract
A concept to adjust the output spectral bandwidth of a wavelength-tunable fiber optical parametric oscillator (FOPO) is presented. By adjusting the chirp of the pump pulses relative to the chirp of the resonant pulses, the energy of the output pulses can be reorganized into a wide or narrow spectral bandwidth. We present numerical simulations of a FOPO, which is able to generate pulses with an adjustable bandwidth between 12 and 0.8 nm. Such a FOPO should allow the cost-efficient application within two-photon excited fluorescence microscopy, which benefits from high peak powers, combined with coherent Raman microscopy, which requires spectrally narrow pulses.
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Maximilian Brinkmann, Tim Hellwig, Carsten Fallnich, "Rapid and lossless bandwidth-switching of a fiber-based optical parametric oscillator for multimodal nonlinear microscopy", Proc. SPIE 10498, Multiphoton Microscopy in the Biomedical Sciences XVIII, 1049822 (23 February 2018); doi: 10.1117/12.2290346; https://doi.org/10.1117/12.2290346
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