Photothermal, photoconductive and nonlinear optical effects induced by nanosecond pulse irradiation in multi-wall carbon nanotubes

摘要: Abstract The influence of the optical absorption exhibited by multi-wall carbon nanotubes on their photothermal, photoconductive and nonlinear properties was evaluated. experiments were performed using a Nd:YAG laser system at 532 nm wavelength 1 ns pulse duration. observations carried out in thin film samples conformed prepared an aerosol pyrolysis method; Raman spectroscopy studies confirmed nature. Theoretical numerical calculations based heat equation allow us to predict temporal response induced effects associated energy transference. A two-wave mixing method employed explore third order sample. dominant thermal process identified as main physical mechanism responsible for Kerr effect. Potential applications developing monostable multivibrator exhibiting different time-resolved characteristics analyzed.