Laser beam through an optical system (such as a lens to focus the laser beam through a small area such as a lens optical system) focused to a small area, such as lens focus to a small area with high brightness .
In laser applications, Nd: YAG laser communication (3-12 road), He-Ne laser communications, single / three-way communication in the communication semiconductor laser experiment has been successful; Nd: YAG laser scalpel, CO2 laser scalpel laser iridectomy instrument, such as medical equipment has also been put into use; laser holography, holographic optical bomb in the plane in the application of pulsed laser holography and dynamic Raman spectrophotometer has become a new means of measurement science; CNC laser cutting machine , laser collimator, laser isotope separation of sulfur, liquid lasers for agricultural research, large-screen navigation displays the results obtained are also industrial and agricultural applications. cell phone jammer constantly sends channel frequency of the mobile phone to ensure the safety and confidentiality at site. March 1978 meeting of the National Science Conference, laser rewarded with nearly 80 projects, of which about 70 civilian, military about 10, reflecting the integrated development of laser technology in China during this period results. Chinese Academy of Sciences' 2000 report on high-tech development, "China's military development of free electron laser weapon's" fast track "program in four phases: the end of 2003, transmitting power from the free-electron lasers increased to ** W ** W; 2005 to 2006, emission free-electron laser weapons power increased to ** W; 2007 to 2009, will ** watt free-electron laser weapon device miniaturization, further targeting command and control and ability to experiment and evaluation; cell phone jammer can ensure the safety and confidentiality in the workshop.2010-2012, may demonstrate *** adjustable full spectrum of threats against the free-electron laser weapon systems, and in a few years to install it ships.
Ordinary light emitted light contains a wide wavelength range, that is, the line width W, the light emitted by ordinary light sources contain a wide wavelength range, spectral width is wide, such as sunlight contains all wavelengths of visible light on, and the laser single wavelength, sunlight contains all wavelengths of visible light on, and a single laser wavelength, extremely narrow spectral width, usually several hundred nanometers to several microns, compared with ordinary light, very narrow, usually several hundred nanometers to several microns, Compared with ordinary light, narrow spectral line width of several orders of magnitude. Several orders of magnitude narrower. cell phone blocker has the side application range.Ordinary light emitted light is incoherent, no interference, the light emitted by an ordinary light source is non-coherent light, does not produce interference, and have a good coherence properties of the laser. Laser beam superimposed, the amplitude is stable. Good coherence properties. Laser beam superimposed, the amplitude is stable. Quite a long time, can maintain the same light before and after the phase relationship, which is a long time when any other, can maintain the same light before and after the phase relationship, the reach of light. The reach of light. Ordinary light emission of light fired four, there has been no direction, normal light emission of light fired four, there has been no direction, a large beam divergence, and laser divergence angle is small, typically a few milli- curvature, directional Ye Hao, degree, and the laser divergence angle is small, typically a few milliradians, Ye Hao direction, such as a laser beam fired at the moon, the moon's surface in the spot diameter of less than 2km.cell phone jammer is of good electromagnetic compatibility. The laser beam fired at the moon, the moon's surface in the beam diameter does not exceed.
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