  Multi-photon microscopy is a powerful tool in biomolecular research. Less
complex and more cost effective excitation light sources will make this
technique accessible to a broader community. Especially semiconductor diode
seeded fiber lasers have proven to be robust, low cost and easy to use.
However, their wavelength tuning range is often limited, so only a limited
number of fluorophores can be accessed. Therefore, different approaches have
been proposed to extend the spectral coverage of these lasers. Recently, we
showed that four-wave mixing (FWM) assisted stimulated Raman scattering (SRS)
can be harnessed to red-shift high power pulses from 1064 nm to a narrowband
output at 1122 nm and 1186 nm and therefore extend the number of accessible
fluorophores. In this contribution, we show the applicability of all three
wavelengths for multi-photon microscopy and analyze the performance.
