Optical properties of self assembled aligned single walled carbon nanotubes

The self – assembly method was used to prepare aligned single - walled carbon nanotubes for application as a saturable absorber in ultrashort pulses lasers. The alignment of nanotubes was investigated by polarized Raman spectroscopy. Moreover, the nonlinear characteristics of the prepared aligned nanotubes film were compared to typical film with random nanotubes. The saturable absorber modulation depth has increased by 6% due to the alignment features.