The technology introduction of cell phone jammer will be localized

The technology introduction of  cell phone jammer  will be implemented next month.
Each work is a pulse interval of time to work a certain way. Work with pulse laser is pulsed lasers work. Pulsed lasers with large output power, suitable for laser marking, cutting, distance and so on. Common pulsed lasers: solid-state laser in yttrium aluminum garnet (YAG) laser, ruby laser, neodymium glass lasers. There is molecular nitrogen lasers, excimer lasers. Laser diode is essentially a semiconductor diode, according to the PN junction is the same material, the laser diode can be divided into homojunction, single heterojunction (SH), double heterostructure (DH) and quantum well (QW) laser diode. Quantum well laser diodes with low threshold current, the advantages of high output power, is the mainstream product market applications. Compared with lasers, laser diodes with high efficiency, small size, long life advantages, but its output is small (generally less than 2mW), linear poor, not very good color, its application in the cable television system is considerably limited, can not transmit more channels, high-performance analog signal. Two-way optical receiver in the return module, uplink transmitter generally uses quantum-well laser diodes as light sources. Spontaneous emission, even two at the same time from one energy state to low state transition of particles, they emit light phase, polarization state, direction of transmission may be different, but the stimulated emission is different, when in the high-energy particles in the foreign state The excitation photon transition to the lower state, issued in the frequency, phase, polarization state and so light with the same external photons. The manager has signed on the application of technology introduction of  cell phone jammer .
In lasers, the occurrence of stimulated emission of radiation is, it sends the laser frequency, phase, polarization state and so the same. Any of the stimulated emission system that is stimulated emission, but also stimulated absorption, stimulated emission dominant only in order to be issued outside the laser light amplification. The general light sources are dominated by stimulated absorption, only the particle equilibrium is broken, the energy state of the particles is greater than the number of low-energy states of particles (called ions such cases inversion), the laser can be issued. Laser-generated three conditions are: to achieve population inversion, to meet the threshold condition and the resonance conditions. Produced by stimulated emission of light is the primary condition for population inversion in semiconductors is to bring within the valence band to the conduction band electron pumping. In order to obtain ion inversion, usually heavily doped P-type and N-type material composition of the PN junction, so that the applied voltage, in the end appeared near the ion inversion - the Fermi level in high-EFC The following storage of the conduction band electrons, the Fermi level in the low EFV stored above the valence band with holes. Achieve population inversion is a necessary condition for laser-generated, but not sufficient condition. To generate the laser, but also a loss of very small cavity, the cavity is the main part of the two mirrors parallel to each other, activating substances emitted light by stimulated emission of radiation reflected back and forth between two mirrors, and constantly rise to new of stimulated radiation, so that it constantly being enlarged. The technology introduction of  cell phone jammer  will be localized.