Abstract
We present combined mid-infrared and nonlinear Raman spectroscopy in a single beam setup through the flexible control by sub 10 fs pulse shaping. Hence tuneable (>2000 cm-1), narrowband (<20 cm-1) infrared light is generated.
Highlights
Nonlinear spectroscopic methods and in particular the combination of several nonlinear optical modalities in one setup, such as coherent Raman microscopy, second harmonic generation or two-photon fluorescence, have seen tremendous development over the recent years resulting in many different applications in both the material and life sciences [1]
We discuss the experimental realization of a novel concept for multimodal nonlinear microscopy that combines ultrashort, sub 10 fs laser pulses with pulse shapers (Fig.1a) and show in detail the successful implementation of adaptive spectral focusing (SF) schemes for Raman and mid-infrared (MIR) spectroscopy
The data was recorded using a chirp of 7000 fs2 and 9000 fs2 for SF-based CARS and IR spectroscopy, respectively
Summary
Nonlinear spectroscopic methods and in particular the combination of several nonlinear optical modalities in one setup, such as coherent Raman microscopy, second harmonic generation or two-photon fluorescence, have seen tremendous development over the recent years resulting in many different applications in both the material and life sciences [1]. We discuss the experimental realization of a novel concept for multimodal nonlinear microscopy that combines ultrashort, sub 10 fs laser pulses with pulse shapers (Fig.1a) and show in detail the successful implementation of adaptive spectral focusing (SF) schemes for Raman and mid-infrared (MIR) spectroscopy
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