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Laser operation of Nd+3-doped gadolinium scandium gallium garnet (Nd:GSGG) has been first shown by Kaminskii et al. in 1976 [1]. In earlier studies, flaslamp or solar pumping of Nd:GSGG has been explored, and narrow absorption bands of the Nd+3 ion, that overlaps poorly with these broadband emitters resulted in low laser efficiencies. As a solution, co-doping with chromium ion (Cr:Nd:GSGG) has been...
Fiber lasers operating at 2μm wavelength range have great potential in applications like coherent LIDAR [1] and remote sensing [2]. In particular, the 2.09∼2.1μm range exhibits low atmosphere attenuation [1]. The 2μm region could also be a new window for optical communication in hollow core fibers [3], where narrow linewidth and linearly polarized light is preferred. Efficient 2μm range lasing has...
High-energy pulsed mid-infrared (IR) lasers in the 2 to 3 μm range are of interested for various scientific and industrial applications such as laser radar, chemical sensing, and mid-IR laser processing. In addition the sources are useful as a pump light source for generating mid-IR waves longer than 4 μm in optical parametric oscillation. Cr:CdSe is one of attractive laser mediums for the efficient...
The goal of this work was an investigation of the temperature influence (80–300 K) on laser properties of thulium doped CaF2, co-doped by yttrium (Tm, Y:CaF2), which could serve as gain medium for generation of radiation at 1.8–2 μm. CaF2 single crystal and ceramic belong to promising laser hosts.[1, 2] Its doping by trivalent ions, like Tm3+, leads to forming of complex structures necessary for charge-compensation...
Alexandrite (Cr:BeAl2O4) is a tunable solid-state gain medium from 700–850nm that has excellent thermo-mechanical properties for pulsed and high power applications. It can be pumped with high power red diodes (∼637nm), giving efficient and high power operation [1]. However, there are a range of effects in Alexandrite that pose challenges to optimising and understanding its performance across its tuning...
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