How to carry out the sampling inspection of cell phone jammer

How to carry out the sampling inspection of cell phone jammer ?
Where the divergence angle of the beam plane. It can be seen from the above equation, the better the directivity of the beam, the spatial coherence, the better. For ordinary light, only when the beam divergence angle less than a certain limit, real-time, the beam was obvious spatial coherence, the limits of the light source. The laser photon belonging to the same transverse mode pattern are spatially coherent, does not belong to the same transverse mode mode photons is irrelevant. Therefore, the coherence of its transverse mode structure of laser space determined by a single transverse mode laser is coherent, multi-transverse mode beam coherence variation. At the same time, single-transverse mode beam directionality best transverse mode higher order directional worse, can be seen that the beam's spatial coherence and directionality (with the beam divergence angle description) are closely linked.
As the application was extended, high-power CO2 laser domestic products gradually clearance, is bound to traction the rapid growth of China's laser sales. Laser Marking Machine (Marking machine) will continue to pediment. According to global statistics on the total sales of laser processing system, laser marking machine after the laser cutting machine, the second place. In recent years, close to the laser cutting machine sales, about 1/3 of each of the total. In China, on the contrary, has accounted for 50% of domestic sales of laser processing, laser marking machine sales, occupation of the domestic market in a wide range and greatly open up the application areas of industrial, we can say than foreign The application surface should be much broader. The safety lock can prevent the kids or someone who doesn’t know the right use and operation of cell phone jammer  from using it.
Industry electronic industry, automobile industry, tools, measuring tools, aerospace, instrumentation, packaging industry, medical products, home appliances, keyboards, panels, advertising signage, identification cards, daily necessities, jewelry, diamonds and other fields. The marker object's material can be various types of metal and nonmetal. Such as stainless steel, aluminum, plexiglass, plastics, ceramics, synthetic materials, wood, rubber, leather products, paper products, printed circuit boards, a variety of electrical and electronic components, cigarettes, buttons, detonators, metal parts, to the food packaging , pharmaceutical packaging, as well as crabs. Its annual sales number about 4,000 to 5,000 units. It uses lasers from lamp-pumped Nd: YAG lasers, glass or metal cavity CO2 laser. Jointly developed by France's Dassault and British Marconi pod contained the CLARA laser radar using a CO2 laser.