Neodimium Doped Yttrium Aluminum Garnet-manufacture,factory,supplier from China

1. 3 2 ~ 3 μm laser crystals doped with Cr2+ The mid-infrared luminescence of transition metal ions (Ni2+, Co2+, Cr2+, Fe2+, etc.) is based on 3d→3d transitions. According to the different types of sites occupied by transition metal ions in the host material, they can be divided into two categories: occupying octahedral sites with inversion symmetry (such as: Ni2+, Co2+ doped halides); Symmetric tetrahedral sites (such as: Ni2+, Co2+, Cr2+, Fe2+ doped II-VI compounds).

1. ~ 2 μm laser crystals doped with Tm3+ or Ho3+Tm3+ has a strong absorption near ~790 nm and a large absorption cross-section, so the ~790 nm commercial LD can be directly used as a pump source.

1.5  ~ 4 μm laser crystals doped with Fe2+ Compared with Cr:ZnSe, Fe:ZnSe has a smaller band gap and is prone to produce thermally induced multi-phonon quenching, so both laser power and efficiency are low. In 1999, Adams et al. realized the tunable wavelength of 3.98-4.54 μm at low temperature for the first time in Fe:ZnSe, and obtained laser output with slope efficiency of 8.2%. Pumped by Er3+ doped or Cr:ZnSe @ 2.7 μm laser, 4.0 μm wavelength and 1 W level continuous laser output have been obtained at room temperature. In 2020, Pushkin et al.

1. 2   ~ 2.3 μm laser crystals doped with Tm3+ Compared with the 2 μm band (3F4 → 3H6) of Tm3+, the 2.3 μm laser operation based on the 3H4 → 3H5 transition of the Tm3+ doped laser medium has the following advantages: (1) ~790 nm LD is directly pumped to the upper energy level of the laser. Tm3+ has a strong absorption around 790 nm (directly corresponding to the 3H4 → 3H6 transition), which can match the emission wavelength of the current mature commercial AlGaAs LD, so as to realize high-performance LD pumping all-solid-state high-efficiency 2.3 μm laser operation.

1. 4  ~ 3 μm laser crystals doped with Er2+, U4+, Ho3+, Dy3+  As an active ion, Ho3+ has achieved laser output in the ~3 μm band (5I6→5I7). In 1976, researchers first realized 2.9 μm laser output in Ho:YAP crystal. In 1990, Bowman et al. obtained 2.85 μm and 2.92 μm laser outputs in Ho:YAP crystals, and obtained 2.92 μm band-tuned laser outputs in Ho:YAP crystals in the following year. In 2017, Nie et al. pumped Ho, Pr: LiLuF4 crystals with a 1 150 nm Raman fiber laser, achieving 2.95 μm watt-level laser output for the first time. In 2018, Zhang et al.

After more than one year’s research work, WISOPTIC has successfully developed two types of dye laser cells – 585nm and 650nm.With advanced technique of coating and optical system design, dye laser headpiece has been developed and will be in mass production soon.Dye laser headpiece 585nm is used mainly to treat facial telangiectasia, and dye laser headpiece 650nm for removal of green tattoo, etc.Dye laser headpiece made from WISOPTIC has higher conversion efficiency than that of any competing product.

MEASUREMENT TECHNIQUEThe measurement technique consists primarily of a measurement of the variation of the angle of deviation with temperature. The crystals to be measured were 60-60-60° prisms approximately 15 mm on a side. They were attached to a temperature-controlled mount in a vacuum chamber. The temperature could be varied by varying the temperature of a liquid bath above the mount. Temperature was measured by thermocouples attached above and below the crystal. The crystal temperature was assumed to be the average of the two temperatures.

Introduction High-power all-solid-state deep ultraviolet (DUV) lasers have many important applications in scientific research, medical diagnosis, and industrial manufacturing, such as Raman spectroscopy, photobioimaging, integrated circuit etching, and precision micromachining, due to their compact structure, high single-photon energy, and good long-term stability.

Experimental SetupIn order to obtain a 266 nm deep ultraviolet laser with high efficiency and stable operation, this paper built an all-solid-state 266 nm deep ultraviolet laser generation device as shown in Figure 1, which consists of a cavity-dumped all-solid-state Nd:YVO4 laser, a double-frequency system, and a quadruple-frequency system.Fig.

3. Experimental EquipmentThe overall device diagram of the frequency doubling experiment is shown in Figure 3(a). The 1064nm continuous light passes through a half-wave plate and is directly focused into the CPPLN crystal by a lens. The generated frequency doubling light passes through a 532nm transparent filter and is received and detected by a power meter. The self-built LD-pumped Nd:YVO4 continuous laser used in the experiment can reach a maximum output power of 22.53W.