Green laser pointer owns the perfect performance

green laser pointer  owns the perfect performance.
This work is a certain percentage of the material A12O3, Y2O3, and Nd2O3 in single crystal furnace for melting and crystallization made, was purple. It is the neodymium ion activated particle (Nd3 +), the absorption spectra shown in Figure (5-4) as shown in the UV, visible and infrared region there are several strong absorption bands. Nd3 + in YAG laser produces the energy level structure shown in Figure (5-5) below. It is four-level system. The laser energy level E3 is on the 4F3 / 2, laser level E2 is 4I13 / 2,4 I11 / 2, the fluorescence spectrum wavelength of 1.35 ? m, 1.06 ? m, 4I9 / 2 ground state corresponding to E1. As the 1.06 ? m than 1.35 ? m wavelength of fluorescence intensity about 4 times, so the laser oscillation, will only produce 1.06 ? m laser.
Nd3 +: YAG laser's advantage is the low threshold and has excellent thermal properties, which makes it suitable for continuous and high repetition rate of work. YAG is able to work continuously at room temperature, the only practical solid working substances in small and medium-power pulse devices, especially in the high pulse repetition rate of the device, the current application of Nd3 +: YAG amount of work far more than other solid substances. It can be said, Nd3 +: YAG from there so far, a lot of use, enduring. As the insulating material is the work of solid-state laser crystals, it is generally used optical pump excitation. Pump source is currently working on multi-state arc discharge inert gas discharge lamp.  green laser pointer  possesses the terrific parameters.
Pump light source should meet two basic requirements: a high luminous efficiency; radiation spectral characteristics of light should work with the laser matches the absorption spectrum of the material. Krypton lamp discharge at low current density characteristics of the radiation spectrum, and the YAG absorption band close to the main pump. Therefore, continuous and small energy (<10 J = pulse YAG laser krypton lamp-pumped multi-use, its efficiency is higher. Pulsed xenon lamp at high discharge current density case, the radiation of a continuous spectrum, and the short-wavelength spectral components to move, conducive to the absorption of ruby. So for the ruby laser, as well as large and medium-power neodymium glass, YAG pulsed lasers, pulsed xenon lamp to use more efficient pump.  green laser pointer  has the high cost performance.
As commonly used pump lamp radiation in space is full, and solid working substances are generally processed into a cylindrical rod shape, so in order to pump light energy emitted together to complete the work material, must condenser chamber . Figure (5-6) shows the elliptical cylinder condenser chamber is the most commonly used small solid-state lasers in the condenser chamber, and its inner surface was polished into a mirror, its cross section is an ellipse. By geometric optics imaging principle, from oval to issue a focus all the light, after reflection by the oval, will gather to focus on another. Therefore, if the laser lights and straight elliptical cylinder rods were placed in the two focal lines condenser chamber, the condenser can get better results.  green laser pointer  owns the reasonable price.