Diode-pumped continuous wave tunable and graphene Q-switched Tm:LSO lasers

TL;DR: In this paper, the wavelength tunability and actively Q-switched performance of Tm,Mg:LiTaO 3 was investigated for the first time with a birefringent quartz plate.

TL;DR: In this article, a diode-pumped Q-switched Tm:KLu(WO 4 ) 2 microchip laser generated a maximum average output power of 310 mW with M2 < 1.2 at 1947 nm.

TL;DR: In this article, a diode-pumped continuous-wave (CW) laser with a novel Nd:GdLaNbO4 mixed crystal at 1065 nm was demonstrated.

Abstract: The pulse laser using a saturable absorber as a passive device has the advantages of narrow pulse width, high repetition rate, and high pulse energy. Low‐dimensional materials have attracted research interest in recent years due to their excellent saturable absorption properties, ultra‐fast carrier response speed, high damage threshold, and so on. This paper gives a brief review of the state‐of‐the‐at 2 µm solid‐state lasers using saturable absorbers. The output performance of lasers in repetition rate, pulse energy, pulse width, and wavelength are summarized. The paper is expected to provide a development direction of novel materials as saturable absorbers in 2 µm solid‐state lasers.

TL;DR: In this paper, a Ho:YAG-pumped ZnGeP2 (ZGP) OPO was used to achieve >4.2-W mid-infrared (mid-IR) output at 3.8 and 4.65 µm.

TL;DR: The results strongly suggest that graphene is an excellent atomic layer saturable absorber, far beyond the time resolution of other ultrafast techniques with hundred fs laser pulses.

TL;DR: This is the first time to the authors' knowledge that a 2 microm laser has broken the joule per pulse barrier for Q-switched operation, and the total system efficiency reaches 5% and 6.2% for single- and double-pulse operation, respectively.

TL;DR: In this paper, a new Yb-doped crystal Yb3+:Lu2SiO5 (Yb:LSO) under high power diode-pumping (15 W) was reported.