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We report on a femtosecond semiconductor saturable absorber mirror (SESAM) mode-locked Yb:LuYAG laser. Pumped by a 976 nm single-mode fiber laser, a self-starting mode-locked Yb:LuYAG laser was demonstrated, delivering a 618-mW output power with 140-fs pulses and a 95.4-MHz repetition rate. The output spectrum is centered at 1053 nm with a spectral width of 10.4 nm. To the best of our knowledge, this is the shortest pulse ever generated from a mode-locked Yb:LuYAG laser. [ABSTRACT FROM AUTHOR]

The present work successfully demonstrated a passively Q-switched solid-state 1 µm Nd:GSAG laser using a few layer molybdenum disulfide (MoS 2) saturable absorber. Controllable dual wavelengths of 1059.94 nm and 1062.3 nm were achieved in the experiment. We obtained the shortest pulse width of 217 ns and the highest pulse repetition frequency of 51.2 kHz. The pulse energy and peak power are 9.5 μJ and 43.7 W, respectively. To our knowledge, this is the first time that dual wavelengths with a controllable intensity ratio have been obtained in a Q-switched solid-state laser based on a MoS 2 saturable absorber at 1 μm. The results demonstrate that MoS 2 is a highly reliable optical modulator for dual wavelength laser applications. [ABSTRACT FROM AUTHOR]

An Yb:CALGO solid-state mode-locked laser based on gold nanoparticles saturable absorbers (GNPs-SAs) is realized with the output pulse width of sub-100 fs. In our work, GNPs are synthesized by the Turkevich methods with good uniformity. The GNP is employed as SA in the X-type resonator Yb:CALGO laser. The shortest pulse of 91 fs with the central wavelength of 1065.1 nm and a spectral width of 13 nm is obtained under the pump power of 800 mW. And the maximum output power and repetition rate are 51 mW and 96.82 MHz, respectively. To the best of our knowledge, this is the shortest pulse ever reported in all solid-state lasers by employing GNPs as the SA. [ABSTRACT FROM AUTHOR]

• The performance of self-Q-switching Nd:YSAG operation is studied. • A stable black phosphorus saturable absorber (BP-SA) was prepared. • The passively Q-switched mode-locking operation by using BP-SA is investigated. • Generation of dual-wavelength picosecond pulses by QML operation. • SQS and QML operating at dual-wavelengths of 1058.97 and 1061.49 nm, respectively. In this paper, self-Q-switched (SQS) and passively Q-switched mode-locked (QML) dual-wavelength Nd:YSAG lasers are reported, that works at 1058.97 and 1061.49 nm, simultaneously. Till now, the performance on SQS, and passively QML operation by using black phosphorus (BP) in Nd:YSAG crystal lasers have not been reported as per the author's knowledge. The Nd:YSAG laser SQS operation was realized by designing a simple plano-plano resonator cavity. The maximum output power of 0.471 W at absorbed pump power 2.64 W and the pulse duration was 885 ns. The Nd:YSAG laser QML operation was realized by designing a Z-type resonator cavity. The duration of mode-locked pulse inside the Q-switched envelop was estimated to be 235 ps with 96.5 MHz repetition rate at the absorbed pump power of 4.08 W in QML with black phosphorus saturable absorber (BP-SA). [ABSTRACT FROM AUTHOR]