Chang green laser pointer company has created miracles over the world

Ne laser, scientists have finally achieved a long-cherished wish of people over the years, seen close to the thin line, highly coherent, pure red of the real “light.” energy level diagram of Figure 4 ruby laser by the working substance (gain medium), the resonant cavity excitation energy and the composition of the resonant cavity is a typical Fabry – Perot cavity, and meet the stability condition, the structure shown in Figure 5, which reflect light in the propagation between two mirrors form a closed loop, in which light many will not escape from the cavity transmission. This      green laser pointer company is a company trusted by customers at home and abroad.Fabry – Perot cavity is a multi-beam interference principle, for a certain length of the cavity, only a series of discrete frequencies to meet the specific resonance conditions, that is light in the cavity transmission a π phase change back and forth when its integer multiples of 2, while only those which meet the threshold condition, and the fall of the gain medium range of frequency components of the fluorescence line width is possible to form the laser emission, constitute the longitudinal mode laser in resonance here cavity frequency selection has played a role, so that the laser has a good color of Figure 6 shows the fluorescence of the laser line width of the Gaussian type longitudinal Figure 7 A.
Chang    green laser pointer     company established standardized plant covering an area of 7000 square meters. Let us briefly discuss the working principle of the ruby laser (see Figure 4). ruby crystal laser medium is Al 2 O3. crystals mixed with about 0.05% of Cr 2 O3, xenon flash light from the surrounding crystal rods, which contains a large number of wavelengths in the vicinity of 550nm green, easily crystal of chromium Cr 3 + ion absorption. crystal chromium ions in the ground state due to absorption of photons from the excited to the 4 A 2 energy level is 4 F1 and 4 F2, this process is called pumping (or more type 1) Figures in brackets shown in the citations for the scientists said (or have written), then the 50th anniversary of the invention of laser known as special as the pump). in the high energy particles are short-lived (about 10 – 9 s), most of the particles through a two-step process to return ground state:Chang    laser pointer pen company has formed a mature industry chain. the first step, they transitions through non-radiative relaxation to slightly below the 2 E level on the level on the particle lifetime is very long, you can maintain about 3ms, said the metastable state; If there is no re-excitation, then The second step, they will be randomly by spontaneous transition back to the ground state, while the radiation of a wavelength of 694. 3nm (R1 line) and 692. 9nm (R2 line) of red fluorescence if the flash pump energy is large enough, xenon lights will continuously stimulate the chromium ions, at a certain time, there will be a number of particles in a metastable ground state particle number than the so-called reverse distribution random spontaneous emission of photons in the excited state chromium atoms, stimulated by produce the same photon radiation to form a continuous light condition.
As a result, stimulated emission The physical model has been established, the laser is everything is in place, ready to come out of the 2 theory from Einstein stimulated emission to the physical model of the laser in 1900, Planck proposed the quantum hypothesis, Einstein (see Figure 1), published in 1917 well-known theory of stimulated emission, suggesting the possibility of adopting “incentive” photon radiation, and may enlarge, which in fact is the most fundamental theoretical basis of laser, but then about four years, by laser radiation and high-Li transformation equations derived Gaussian beam focused by the lens transformation and Einstein in Figure 1 [not nature's most "understandable is that it can actually understand! (The mo st inco mprehensible t hing about t he world is t hat it 3 invention of the laser, ruby laser works to enlarge the field is unusually quiet.