Figure 1
From: Discovery of Several New Families of Saturable Absorbers for Ultrashort Pulsed Laser Systems

Optical spectrums obtained for various conditions. Mode-locked spectrum obtained by using (a) CMC, (b) SMMA, (c) Glycol and (d) PVA. CW spectrum obtained without any SA, Fig. 5(e). Forward and Backward ACE spectrums, (f).