Therefore, it is very important that how to efficiently synthesize the sub beam of a multi beam communication signal to a bunch of laser pens. In order to solve this problem, this paper proposes a coherent polarization synthesis technique based on optical fiber devices.
Two polarization perpendicular laser pens optical fiber polarization beam combiner for a beam of light, due to changes in the input beam phase difference, beam synthesis of arbitrary polarization. In order to control the synthesis of beam is linearly polarized, to proceed to the next level synthesis or for demodulation of communication signals, the group phase were put forward. Control and polarization control of two methods, and the theoretical analysis and experimental verification.
The use of laser pens cooling technology, molecular cooling for the first time three atoms to near absolute zero (-273.15 C), this is the largest molecular technology so far cooling. Scientists believe that this miracle is expected for the manufacture of molecular quantum computer, but also could become a chemist’s good helper.
Laser pens cooling technology has been used to cool a variety of single atomic physicists, but its molecular cooling difficult. In cooling by laser, laser energy and cooling system of the match, the more atoms and molecules contained in the atomic vibration and rotation, more complex, more difficult, the difficulty is cooling the greater.
The ideal color strength laser pens gun should be “no color” in the infrared, and you see the blue laser may not necessarily be the color itself, it is very likely that the luminous light hit the target in the high temperature region produced by laser emitting laser itself will be hot, if large power or it will burst a cooling device.
If you do not want every shot to CD, then give it an evaporative cooling device, like the laser pens gun, the cooling liquid natural water can not be so low things, then use liquid nitrogen, affordable, safe and clean, high concealment, just need your gun. A coolant and exhaust port.
When it comes to the powerful laser pens device, it must mention the laser cutting machine, which is now more conventional can rival the laser gun thing, it is indeed very small, just to support it to work there is a lot of things.
Laser pens gun just need that little things below the white black sub center of the beam on the above, it can be like a tofu cut anything you want to cut any metal you want to cut it, just for killing the target is too small, you need a little rough. Plus a handheld device for cooling equipment and inexhaustible power, finally add a cool shell, is a laser gun.
Like laser pens have high requirements of the device is generally not used. But! Everything has an exception. This is Spring8 FEL, niubable Japanese with high frequency electronic deflection part need not fall, the rest of the nanosecond level length of beam, and then down to the hard compression, also they could have femtosecond level. In light of the cathode, but as a user device, stable and long time to provide high current beam is the most important, so they give up the photocathode.
Because of the hot cathode bunch length is difficult, so after the laser pens invention, soon in electron. Because the length of the laser is easier to achieve fast, so produced by laser beam is short beam, good control.
A metal cathode, in response to UV laser pens, is the goddess of love Nanuo award reference experiment. Long life of metal cathode, emission of live together. Of course is worse. The specific heat cathode 266nm laser. After all, remove the transition energy of the electron temperature did more than 0.4eV.
And the metal cathode efficiency is very low, generally 10000 photons will hit 1 electrons, do well, barely able to 1000 photon is an electron. So when the high current to play silly, don’t say bad high power UV laser pens is done, playing in the metal, the metal must be broken.
First, the white of the frequency does not exist in the whole spectrum (wavelength), the human eye is mixed color to white light perception, Newton has confirmed in hundreds of years ago; second laser pens is a single frequency, so the principle of taking no white to red and blue laser. The wavelength of the semiconductor material green three the growth in a substrate, is almost impossible.
Laser pens different wavelength and different materials, the lattice parameter differences are generally quite large, even can grow at the interface will produce a large number of lattice mismatch; large lattice mismatch in basic decisions cannot be together. The basic decision of multi wavelength optical synthesis can only use the spectrum.
The more reliable method is to use the laser pens technology, using ultrafast laser of high pulse energy Ura Hikaruko crystal fiber, nonlinear effect, can realize the spectral broadening, generating high power white laser is difficult, the average power of ultrafast lasers is low, and the loss of power, broadening the entire spectrum is lower.
In theory, at the same time on the 3 color laser pens with appropriate modulation, can produce the so-called white laser. But the monochromatic light mixed LED is still not very perfect modulation of white light, let alone by laser, this modulation is very complex, the effect is not very good.
When laser pens twisted, the hollow channel effect of the helical array in the light, similar to that described by general relativity, when light travels through the stars will occur due to gravitational bending in space.
The optical fiber as an internal laser pens. like pipeline light by wall, usually with a light guide fiber core, the refractive index of glass fiber rate higher than the refractive glass outer layer closed. The refractive index difference will cause the light reflection in the cladding interface, and trapped in tube shaped fiber in the core. The team LED for the first time the light guide without core photonic crystal fiber.
A typical laser pens consists of a piece of glass, a regular periodic array of holes in the glass and air volume. Due to the different refractive index and refractive index with periodic structure. This is the material called crystal, their atoms form a three-dimensional lattice ordered in the crystal salt or for example. In the conventional silicon crystal, such as insulator, conductor and semiconductor, the precise design of 3D structure determines the behavior of electrons.
The three-dimensional structure depends on the optical properties of a laser pens to periodically, in some butterfly wings, this structure determines the butterflies sparkling color. The optical properties to control material is very useful in a wide variety of applications. Developed by Philip Russell and his team of Marx Planck in Erlangen the visible spectra of the photonic crystal fiber can be used to filter specific wavelength or produce super white light.
Green laser application can be well corrected laser module in optical system, to improve the imaging quality of laserpensblue laser pointer, to improve the ability to identify, range of action, it can take one or several small aspheric parts instead of more burning laser pointer, which simplifies the structure of instrument, reduce costs, and effectively reduce the the weight of the instrument.
High power laser green laser light parts in modern high-energy, ICF ignition project, green laser and laser pens and deep space exploration strike system plays an extremely important role, increasingly wide range of applications. Some of these systems due to the use of environmental and related conditions, has very stringent requirements on laser module.
Blue laser pointer traditional processing methods not only in time, efficiency and cost can not meet the requirements, it is more important to burning laser pointer can not be completed as many other materials and high power lasergreen laser light processing. At the same time, the traditional processing method can not solve complex aspheric surface parts, such as green laser ultra precision machining technology, the problem of conformal curved optical parts.
There is an urgent need to study to adapt to the rapid and efficient laser module, on the other hand, with the development of modern computer technology, laser pens, blue laser pointer, the development of various precision components manufacturing technology and environmental control technology, but also provides technical support for the implementation of the requirements of the burning laser pointer, which may become a reality.
Long life laser module configuration green laser system has been basically close to the free maintenance, in the production process, laser pens grade 1, no other safety protection device.Blue laser pointer system is equipped with a suction device, will not cause the emissions of harmful substances. The control software with easy operation, the burning laser pointer is being replaced the traditional mechanical process, saving the cost of special tools.
High power laser circuit board board and green laser light micro drilling and other fields, the green laser system exhibits a significant technological advantage. According to the thickness of the circuit board of different materials, laser module along the desired contour once or repeatedly cutting. Material is thin, cutting speed faster. If the cumulative laser pens is lower than that of penetrating materials required for blue laser pointer, only scratches on the surface of the material; therefore, can be two-dimensional code or code in the material marking, in order to follow the process of burning laser pointer.
The circuit board of the high power laser for frontback connection between the double plate line, or connection circuit for any layer between the conductive multilayer board. In order to need, after drilling the hole wall is plated with a metal layer. Now using the traditional green laser light has been unable to meet the drilling diameter smaller requirements: although improve the spindle speed, but the radial velocity of green laser can be reduced because the diameter is too small, even unable to complete the requirements of the laser module. in addition, considering the economic level, easy to wear laser pens supplies is a limiting factor.
In the early days, each layer of blue pointer laser circuit has been applied to the multi-layer circuit board.Burning laser pointer through the prepreg is pressed together; according to the circuit design, some regions of the high power laser need to be pressed and then cutting window.
Green laser has some unique characteristics, so that they attract scientists laser module. on the one hand, most of them through the non conducting material, so they can be used for packaging box or by external security laser pens, because they are less than X ray energy, they will not damage human tissue or blue laser pointer.
Burning laser pointer due to the chemical effect of different in different ways, is also used to analyze the different high power laser can be used to characterize the specific substances. This is called the green laser lightgreen laser, this ability, the use of light materials analysis is one of the most promising and challenging laser module.
In order to achieve this goal, laser pens scientists launched a series of to the target object, then observe them and wave interaction after the blue laser pointer. burning laser pointer in eyes with visible light, we see a green type because of light reflection produced in the green high power laser chlorophyll.
The solution lies in the metal structure of new imaging green laser light. green laser and laser module when interacting with each other, they will produce a complex electromagnetic field, which is peculiar to the incident signal. Typically, these delicate areas are ignored, but researchers have realized that they can read out the pattern as laser pens, in order to determine the electromagnetic wave. The whole process can be through the micro chip blue laser pointer to complete, it can read burning laser pointer.
The green laser laser module flashlight by a science and technology enterprise development, laser pens is 3 cm in diameter, about 15 cm long and weighs about 180 grams. After the switch is turned on, the flashlight can launch spot small narrow beam blue laser pointer. both during the day or night, and in the mob near to about 30 meters, the high power laser can make the mob temporarily blind, to stop the mob shooting, driving escape arrest behavior.
The green laser light of the safe use of the minimum distance is 4 meters, not less than 4 meters with the green laser irradiation can make the eye of the mob, temporary loss of vision, but will not cause irreversible consequences. In addition, laser module will be conditioned to quickly closed, this reaction will also protect the eyes from laser pens continuous irradiation damage.
Except for the anti riot weapon, the blue laser pointer can be installed in the automatic rifle or pistol as a burning laser pointer. in the major military operations before the start of the offensive will usually turn off the radio network, only receives signals without signal, to avoid being found, this is called “high power laser“.
This green laser light can make in radio silence state secret service issued a simple contact signal with a flashlight, contact distance up to 10 km, green laser battery can work continuously for at least 500 hours.
Green laser we can absorb the inhaled gas in the air, odor and pollutants, including the potential risks of potentially carcinogenic chemicals. Indoor air through laser module filtration cycle, and return to the surrounding environment or be discharged to the outside.Laser pens certified the air filtration method, because of the excellent adsorption properties with activated carbon but as the preferred, and it has been widely applied.
As a comprehensive production factory, all parts of the blue laser pointer in the factory production of activated carbon air filter required (Figure 2). For burning laser pointer and the metal plate covering the carbon plate modules require a lot of linear cutting. The shell is in a turret punch press is made by using high power laser the material, Texas to plan to use green laser light to more efficient production of the shell.
“When green laser began to afford us the size of the enterprise, I started to pay attention to investigation and laser module, but the maintenance of equipment and their prices are relatively high, even the longest life expectancy of laser pens, also must be every 6 years to replace or renovate one, which means that the need to spend 40 thousand to 60 thousand U.S. dollars, blue laser pointer operating cost per unit time is higher. The cost is too high”
After extensive research, he finally chose the burning laser pointer. “when I finally settled in the high power laser eyes, I was shocked by its cost advantage,” he said to.Green laser light a good balance between performance and price, all the advantages of green laser concentration fiber laser machine to the market the most competitive price.