The structure and morphology of microfossils are mainly studied by optical microscopes, electron microscopes and micro-Computed tomography μ-CT. However, getting accurate three dimensional structures of microfossils with these techniques can be challenging in terms of measurement accuracy and analysis duration. Tomographic stimulated Raman scattering microscopy enables to record 3D images of fossils in reasonable times, based on the minerals contained in a sample.

One of the very first requirements to generate ideal on-demand single photon emission from quantum dots (QD) is two-photon resonant excitation. The setup is used to create stable pico-second pulsed laser emission (picoEmerald) in a tunable range of about 700 – 1950 nm.

The wavelength range is further enhanced into the infrared region (DFG). To achieve best excitation parameters without interference of the QD excitation, a double pulseSlicer (for IR and for NIR) is incorporated for narrowing the broadband laser pulses by spectral cutting. The complete system is automated and allows wavelength setting via APE software.