Fourier domain mode locking (FDML) is a laser modelocking technique that creates a continuous wave, wavelength-swept light output.[1] A Fourier domain mode locked laser consists of a ring cavity of lengthHence, it was also studied how the swept light field of an FDML laser can be compressed to generate short pulses of 60 picoseconds duration.Recently, the fast and spectrally broad wavelength sweeps of FDML lasers were used for stimulated Raman spectroscopy (SRS) and hyperspectral microscopy.In SRS, the energy difference between two lasers is used to excite a Raman scattering mode.
