Stable picosecond YAlO₃:Nd crystal laser with hybrid mode locking and passive intracavity feedback utilizing a GaAs crystal

Temporal shaping of ultrashort laser pulses by volumetric chirped Bragg gratings

“…Q-switched mode-locked Nd:YAP-laser [4], generating the train of ps-pulses, was used in the experiment. Pockels cell extracted a 5 µJ, 8 ps single pulse having the spectral width of 0.3 nm centered at 1079.5 nm.…”

Laser Diagnostics of Picosecond Streak Tubes Supplied with Fast-Response Phosphor Screens

“…A Pockels-cell shuttering system provided extraction of one or any desirable numbers of single femtosecond laser pulses. The second laser was a home-made, mode-locked negative-feedback picosecond YAP:Nd laser [14] operating in a Q-switch mode due to a 3274 saturable absorber. The output-laser-pulse amplitudes were stabilized with the help of a GaAs crystal installed into the laser resonator.…”

Investigation of extended pulse trains formation in Nd:YAG laser with nonlinear optical feedback and dye-activated polyurethane thin film

“…It is possible to receive extended trains of picosecond pulses in hybrid mode-locked solid-state lasers by the introduction of a nonlinear negative feedback element into the cavity of passive mode-locked laser [3,4]. In this case one is accompanied by stabilization of amplitudes and shortening of pulses duration towards the end of trains [5,8].…”

“…After [3,4], a various methods of passive mode locking and controlling the Q-factor of the solid-state lasers were intensively investigated by the introduction into cavity the organic dye solutions [6], electrooptical elements [7,9], dyeactivated polymers and gelatine films [10,11], etc. As the elements of nonlinear intracavity negative feedback usually used various semiconductors [12,13], for example GaAs crystals (n-type), undoped high-resistive crystals CdSe, CdTe and others.…”