Cr2+-doped II–VI materials for lasers and nonlinear optics

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

“…The II-VI materials themselves are fully transparent over the wavelength range of interest. Altogether this provides Cr 2+ :ZnSe the highest gain among vibronic lasers and enables efficient broadband room-temperature operation [101,104]. The absorption spectra of Cr:ZnSe, shown in Fig.…”

Direct bonding CVD-grown diamond to ZnSe and sapphire

“…Diamond's unrivalled thermal conductivity (>1500W m −1 K −1 @300K) [1] is over 50 times greater than that of sapphire (27W m −1 K −1 ) [2] , making it an ideal material for heatspreading. In addition, diamond's hardness renders it extremely resistant to wear or indentation damage, offering an appealing structural support for more fragile materials.…”

“…In contrast to diamond, ZnSe suffers from an extremely low mechanical hardness and has a significantly lower thermal conductivity (18W m −1 K −1 @298K) [2], combined with a high thermo-optical coefficient ( dn dt ), leading to detrimental effects when power-scaling. Combination of the two materials is therefore of interest for engineered media, allowing diamond to compliment ZnSe's optical properties through improved thermal management and mechanical protection.…”

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.…”