Continuous wave and ReS₂ passively Q-switched Er : SrF₂ laser at ∼3  μm

Abstract

We report on an efficient Er:SrF laser at 2.79 μm. A continuous wave output power of 1.06 W was obtained with a slope efficiency of 41%, significantly exceeding the Stokes efficiency of 35%. Stable Q-switched laser operation was realized by using an ReS saturable absorber, generating an average output power of 0.58 W with a pulse duration of 508 ns at a repetition rate of 49 kHz, corresponding to a pulse energy of 12.1 μJ.

2D Layered Materials: Synthesis, Nonlinear Optical Properties, and Device Applications

“…Since 2010, Q‐switched solid‐state lasers based on layered materials including graphene, topological insulators, TMDCs, BP, and g‐C 3 N 4 , have been developed rapidly, as shown in Table . It can be seen that these lasers have excellent performance in output power, pulse width, repetition rate, and peak power.…”

“…For example, the researchers achieved the visible‐light Q‐switched laser using topological insulators . In addition, 3‐µm Q‐switched lasers based on layered materials have also been widely studied . Second, besides single‐wavelength operation, multiwavelength Q‐switched lasers have been also developed .…”

Novel Insights and Perspectives into Weakly Coupled ReS2 toward Emerging Applications

“…Because of the weak interlayer coupling, ReS 2 was considered a novel platform for investigating mesoscopic physics and photonics without the limitation of large area and layer numbers. 78 These results revealed ReS 2 as a promising optical modulator.…”

Heterostructure ReS2/GaAs Saturable Absorber Passively Q-Switched Nd:YVO4 Laser

“…Furthermore, the photoelectric properties of ReS 2 are similar from bulk to monolayer [16]. As a semiconductor, ReS 2 exhibits strong nonlinear absorption, so that ReS 2 as SA has been experimentally used in solid lasers in 1.5-μm, 2.8-μm, and 3-μm wavelength [17–19]. Recently, ReS 2 based on sapphire substrate has been reported as a saturable absorber in 1-μm laser [20].…”