Usa green laser pointer can be separated by the wavelength

When two polarizers set the system transmittance spindle angle of 45 °, the sensor system after the outgoing light intensity as follows: l = (Io / 2) (1 + sin2θF) where Io is the incident light intensity. The emitted light intensity measurement can be drawn θF, which can measure the size of the current. The laser gyro Ring Laser Gyro is a without any external reference to the Sagnac effect of optical methods to the new solid-state inertial devices for sensitive measurement of the angular velocity of the rotating body. Sagnac effect in the ring optical path when the loop with respect to inertial space with angular velocity Ωr rotation, the optical path of the counter-clockwise will produce the difference △ L, Shun, △ L = △ S Ω, r / C, this effect known as the Sagnac effect. The laser gyro is based on the Sagnac effect. This pulse function of    green laser pointer     is also very practical in the daily use for some special locations.
The laser gyro has a small size, low power consumption, anti-vibration, anti-electromagnetic interference, low noise, good linearity, wide dynamic range, high sensitivity many advantages and is widely used in missile guidance, aircraft, ships, aerospace, artificial satellites, submarines, unmanned aircraft inertial navigation systems, car navigation, and so on. In addition, the attitude control of the oil drilling, camera, antenna platform stabilization, robotics and other self-control directional device has also been widely used. Here's how it works, as shown below, the dielectric film reflecting mirror constitute a low-loss laser resonator, the He-Ne laser gain tube light gain effect.  green laser pointer   can be divided by the material.
Cavity to maintain a stable cis retrograde wave oscillation, in order to detect the reverse traveling wave frequency difference △ ν is the need to use part of the transmission of a cavity mirror M1, the reverse traveling wave leads to the cavity, the beam combiner The prism beam combiner interference last Optoelectronics PD receiver. 9 Faraday element selected in the laser gyro is flint glass, crown glass to a uniform medium. In the transverse Kerr effect is often used magneto-optical crystals of rare earth yttrium iron garnet, such as a magnetic film (BiPrG-dYb) 3 (FeAl) 5O12 as a magnetic mirror instead of the M1, when K, +, K_ two beam polarized light reach all parts of the lateral increase in the magnetic mirror, the nonreciprocal phase-shift frequency difference, when the incident magnetic field is alternating, then the PD received partial frequency alternating, according to the partial frequency signals to navigate the inertial system, this is the working principle of the laser gyro.  usa green laser pointer     can be separated by the wavelength.
Microwave devices YIG ferromagnetic resonance line width, compact structure, good temperature stability, with small features of the electromagnetic loss characteristics at high frequencies. These characteristics make YIG suitable made of all kinds, such as high-frequency synthesizer, the band-pass filter, oscillator, the A-D tuning drive and other microwave devices, has been widely applied in the X-ray band below the microwave band. In addition, the magneto-optical crystal can also be made of the ring, and magneto-optical and magneto-optical display devices. Magneto-optical crystal materials research and development as well as data of YIG single crystal YIG single crystal (yttrium iron garnet) is a number of the magnetic properties of synthetic iron oxide crystals, used to adjust the laser.    green laser pointer      can be classified by the surface treatment.
Foreign YIG single crystal materials began in 1956 to 1958, Bell Laboratories in the U.S. using the cosolvent method to take the lead in the successful development of YIG single crystal, 1965, American Paken - Ai Lemo launched in YIG single-crystal films. Efforts in the 1960s, of YIG single crystal / film already reached the practical level. 1964, China has also developed a massive single crystal of YIG ferrite with small line width, and started to be made of the diameter of only 1mm or so the YIG small ball high-Q harmonic oscillator. For the YIG-tuned broadband filters, oscillators, and its various components. It is   green laser pointer     divided by material, wavelength and surface treatment.