Are there methods to focalize the light spot of cell phone jammer

Are there methods to focalize the light spot of  cell phone jammer ?
No stamping device for laser cutting machine, there are two basic methods of perforation: (1) blasting perforation: (Blast drilling), materials by continuous laser irradiation to form a pit in the center, then the oxygen with the laser beam flow will soon remove the molten material to form a hole. Generally the size and thickness of the hole, blasting perforation thickness of half the average diameter, so the thicker the plate the larger diameter hole blasting, and not round, not in the higher parts to use (such as oil sieve tube seam ), can only be used on waste. If you want to attract the attention of audience, you may press the shortcut key of blank screen on the  cell phone jammer  body.Furthermore, since the oxygen pressure used in piercing and cutting the same time, a large splash. (2) pulse perforation: (Pulse drilling) use of high peak power pulsed laser to melt or vaporize a small amount of material, commonly used as an auxiliary air or nitrogen gas to reduce oxidation of the hole due to heat expansion, the gas pressure than the cutting oxygen pressure small. Each laser pulse produced only a small spray particles, gradually in-depth, so the plate perforation takes a few seconds. Once the piercing done, immediately replace the oxygen assist gas for cutting. This smaller diameter hole, the hole quality is better than blasting perforation. The following messages are matters need attention when use a  cell phone jammer .This not only to be used in lasers with higher output power; more importantly, when time and space characteristics of the beam, it is generally transverse flow CO2 laser cutting laser can not meet the requirements. In addition, the pulse must have perforated more reliable pneumatic control systems, in order to achieve gas species, gas pressure control switch and perforation. In the case of pulsed perforated, in order to obtain high-quality cut, the rest from the workpiece to the workpiece constant pulse perforated continuous cutting technology should be to focus attention on the transition. In theory, usually to change the acceleration section of the cutting conditions: such as focal length, nozzle position, gas pressure, but in fact because of the time is too short to change the above conditions is unlikely.There’s better no metal obstruction between the emitter and the receiver of  cell phone jammer . Used mainly in industrial production in the average laser power to change the way more realistic, there are three specific ways: (1) change the pulse width; (2) change the pulse frequency; (3) while changing the pulse width and frequency. Actual results show that (3) kinds of the best. Nozzle design and flow control technology of laser cutting of steel, oxygen, and a focused laser beam shines through a nozzle at the material to be cut to form a gas beam. The basic requirements of the air entering the gas flow to a large incision, the speed must be high, so that the oxidation of the cut material sufficient to fully carry out an exothermic reaction; It also has enough momentum to blow the molten material jet. In addition to the beam quality and therefore directly affect the cutting quality control, nozzle design and flow control (such as the nozzle pressure, the position of the work piece in the air, etc.) is also very important factors.The radio frequency signals of  cell phone jammer could penetrate ordinary objects such as human bodies, walls and wood.