Passive Mode-Locking of Diode-Pumped YAG:Nd Solid State Laser Operated at lambda=1.32 mu m Using Carbon Nanotubes as Saturable Absorberстатья
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Дата последнего поиска статьи во внешних источниках: 16 июня 2015 г.
Аннотация:A diode pumped passively mode-locked YAG:Nd laser operated at wavelength 1.32 mu m has been developed using a novel saturable absorber based on single-wall carbon nanotubes incorporated in a polymer matrix. Laser pulses with the output energy up to 70 mu J and the duration of 50 ps have been generated. A stable mode-locking regime has been obtained with the pump frequency up to 1 kHz. The femtosecond time-resolved measurements of the nonlinear absorption coefficient of the nanotube-based saturable absorber have been performed. In the spectral range of 1.2-1.45 mu m, the third-order optical susceptibility of the carboxymetylcellulose film with incorporated single-wall HiPCO carbon nanotubes has been found to be as high as 10(-12) esu. The characteristic time of the fast component of the electronic relaxation was estimated as 200 fs.