Cr/sup 2+/-doped zinc chalcogenides as efficient, widely tunable mid-infrared lasers

Laser crystals and ceramics: recent advances

“…In particular, these chalcogenides doped with Cr 2+ ions have already been shown to produce highly efficient and broadly tunable SE in different lasing modes in the 2-3 µm spectral region [52][53][54]. As before, activated semiconductor crystals, especially of the II-VI family, stimulate the imagination and foster corresponding activity of researchers in the development of SSLs with "electrical" pumping (see, e.g.…”

“…The Cr 2+ ion is the latest TM lasant activator to be used in crystals [227]. Among several known laser crystals containing these 3d 4 ions ( Table 9) the most promising for obtaining broadly tunable and ultra-short-pulsed generation in the mid-IR with LD pumping is ZnSe:Cr 2+ [53,234,235].…”

High Power Tunable Tm3+-fiber Lasers and Its Application in Pumping Cr2+:ZnSe Lasers

“…Divalent transition-metal doped II-VI chalcogenides laser materials have such interesting features as: room-temperature operation between 2 and 5µm, broad tunability, negligibly low excited state absorption, high emission cross section, possibility of direct diode pumping and CW operation. Infrared transition metal ion-doped solid-state lasers, have become the critical components in optical frequency standards, space-based remote sensing systems, and have potential application in femtochemistry and attosecond science [91][92][93][94]. For achieving laser output over 2 m, Cr 2+ :ZnSe crystal is a good candidate.…”

Electronic and optical properties of substitutional V, Cr and Ir impurities in Cu2ZnSnS4

“…The isoelectronic doping of II-VI compounds with oxygen has shown that oxygen gives rise to deep traps [32][33][34][35] at which carriers recombine radiatively [36][37][38][39][40]. Cr-doped zinc chalogenides [41][42][43] have been used as broadly tunable continuous wave lasers.…”