Extended wavelength tunability of a picosecond pulse source by double-pass spectral filter for fiber-laser-based stimulated Raman spectral microscopy

Broadband Yb-fiber pulses are spectrally filtered in a double-pass configuration for achieving wide tunability of 300 cm −1 . The filtered pulses together with Er-fiber ones were successfully used for the spectral imaging of polymer beads. ©2013 Optical Society of America.