Mix into Thulium is fiber-optic laser machines a principle

4-2.

The interest of spectral area of 1 μ M grows day and day. The business that there are a few suppliers now is fiber-optic laser, solid laser, direct diode laser system is usable. The development impetus of state of inchoate laser wavelengh is surgery and dentistry application, because SWIR wavelengh can improve bibulous character, will discuss at the back of the article. The laser that the first development goes is emissive wavelengh for 2.

The YAG laser of 1 μ M, because of bibulous character, the appearance that beam of light produces organizes meeting melt to be inside human body, cut is very accurate, fire damage area is very small also (about 0.

5mm) . 20 centuries 90 time metaphase, because of the prosperity of telegraphic industry, with telegraphic industry emissive wavelengh is 1.

53-1.

The EDFA of area of 56 μ M is able to develop quickly for fiber-optic laser of the foundation. Thulium is in periodic chart with yterbium photograph adjacent, so this showed laser of mix into ytterbium also showed the prospect of laser of mix into Thulium already. The emissive wavelengh limits of these laser is 1.

9 -2.

1 μ M, because other operation application are like laser lithotrity etc of operation of secrete make water welcome and be able to develop. In this wavelengh area, q switch or laser of the pulse that lock up a model also are regarded as laser drive particle to quicken by development, taller harmonic is generated, eyeball of cross-eye of low power comsumption is safe lidar, medium infra-red (medium IR) the pump a surname that frequency makes. Through optical parameter oscillator (OPO) or exceed successive spectrum to generate will undertake nonlinear optical changeover. The power of high peak value of these clock allows to have efficient land to taller wavelengh nonlinear changeover. The induction is passed to use in the element in, in hoping to use particularly infra-red radiate, as a result of its the absorption of a variety of elements is characteristic, be called normally " molecular dactylogram " area. In the area of M of MWIR 2-5 μ , can direct generation grows wavelengh radiant laser to also become usable, but what should notice is, exceed when wavelengh 2.

When 1 μ M, the silicate glass of use tradition becomes an issue. Inside this wavelengh limits, need use fluoride, tellurium is changed or sulfur a group of things with common features changes content glass to transmit fiber-optic. These wavelengh can be used at various application, include spectral, blame to invade sexual medical treatment to diagnose, riverside of pump of communication of laser scalpel, remote sensing, free space, OPO. What also a lot of application that concern with national defence include to defy measure, explosion is endangered is long-range detect, of weapon of accurate control and guide search automatically to warhead, concealment the wavelengh that communication system needs all sorts of differring. To these application, wh some of which is successive inside wide spectral range adjustable mixture is fiber-optic / crystal laser has been come out by development. Be laser of these application development diode at the same time, this kind of laser uses new heterogeneous structure, the wavelengh that can arise below normal temperature is highest can be 2.

3 μ M. We come to safe problem now the facet with discuss a when when using these wavelengh to machine, be faced with very important, the high power inside this wavelengh limits stimulates beam of light to be called erroneously sometimes " person eye is safe " . Needing those who emphasize to emphasize is, inside the power that discusses now in us and influence level, without so called person the eye stimulates beam of light safely. Remember this wavelengh is special development please, because water has tall absorbency to this kind of wavelengh, because this must adopt all and relevant laser security precautionary measures. Fortunately, the laser safety blinkers of all high quality has high optical density to answer limits of this one wavelengh. Fiber-optic laser moves mix into Thulium fiber-optic laser has developed Q switch and successive wave Thulium in a few years in the past higher average power. Already a certain quantity of supplier can offer average power to use pulse laser for the business of 10W now. On this power, somebody may expect to realize specific ablation data process application, for instance film is underlined or cut, but the technical news that I do not know to have any treatment property that release publicly, also do not know to be on which application actually large-scale deploy these laser. The successive wave Thulium of development is fiber-optic laser is high average power, use at a group the specific surgical operation that calls surgery of make water of antrum path secrete to learn commonly, but the detail of these technologies is included in technical medical literature. In fact, can mix through parts of an apparatus of optics of practicable melt vycor fiber-optic the laser that will transmit this wavelengh bundle, it is more easy to let introduce new technology thereby. Easy also now from a few major obtain over there the supplier specific the optical coating at this wavelengh. Inside SWIR limits, catoptrics parts of an apparatus is a problem no longer, because can resemble carbon dioxide laser,use metallic looking glass in that way. To industrial material handling, the usability of 120W average power lets industrial laser beam machining become tentacle can be reached, the cost model that considers the special reality that compares with laser of 1 μ M especially. Simple for, the focusing that makes an appointment with 100W in average power stimulates beam of light, optical phenomenon happens rapid, dimensions is seen to clarity of human naked eye greatly (but be protected) . Use successive wave of 2 μ M fiber-optic laser undertakes we are encountered machining water and hydrocarbon element consist in almost each physics object, and affirmative consist in in the material of a lot of laser beam machining. Most person can agree with silicon is a kind of the most important material in modern technology. Truly exciting is, we have the laser tool with a practical, reliable, effective cost now, it differs significantly with all interaction of these material. Accordingly, make us careful observe laser of 2 μ M is in different data group is other influence. Accurate metal has enough evidence to point out in scientific document, the absorptivity of accurate metal is the dominant function of wavelengh, attenuation length increases significantly. Graph 1 make clear, the absorption of silicon coefficient grows as laser wave from 1.

13 μ M (1.

1eV) increases and reduce gradually. Increase 2 μ M further as wavelengh, absorb coefficient to drop quickly. The experiment proves, when 1940 Nm wavelengh, pass 0.

The silicon chip with large 7mm, can be the diameter 4.

The 100W parallel of 2mm stimulates beam of light the laser power of 50% transmits output. Expected is, as a result of the similar sex between germanium and silicon, we see similar result on germanium, and anticipate the transmission on other and indirect can unoccupied place material can see similar result. Technology of a patent pendency has passed graph 1nextpage transmission transmission effect is come out by development, in system of personal computer cable (MEMS) with small fluid domain, this technology still can be used at a series of new hot procedures. A few otherer technology, be called normally for instance " direct union " and " in all brilliant solders " the technology also can use this one appearance. These technologies apply to the material that solders to differ completely especially, for instance pottery and porcelain, glass, semiconductor is mixed polymer, use a layer of very thin specific metal join, these metallic deposit arrive in some joint face. The way that laser can change through region of bureau of a kind of height is fused this one interlining, thereby will almost any material receive semiconductor or the backside of any transparent component repeatedly. We still proved, power density can be in another when stand by silicon back high to absorb the surface to produce ablation to enough after passing silicon. What should notice is, this applies to homogeneous materials, even if is the inhomogenous sex of a wavelengh, also may bring about smooth scattering to be on crystal boundary or field trash. This is considered as to observe bring about material (the pottery and porcelain that is like small size) the reason that absorb, answering inside limits of 1-2 μ M substantially should be transparent. Metallic metal is structural material, the electron with affirmatory existence can take a structure, what absorb metallic surface effectively is close infra-red (NIR) radiate, although a few qualitative effects make clear, compare with photograph of radiate of M of NIR 1 μ , the reflectivity in surface of the metal when 2 μ M may appreciably increases, but we still prove without any evidence the effect is apparent. Metalloid normally cent is this kind of preeminent material organic with the inorganic compound. Because begin to absorb in element and key energy level, add hydrocarbon and water element nowhere is absent, the discussion below bolts concentration in hydrocarbon, C-H, - on OH key and H2O element. Organic thermoplastic in the is based on carbolic hydrogen key material type that polymer is used extensively in industrial domain, this group is the most remarkable example. The difference with the structure of these material and metallic very bigger than having look, when the resonance frequency that bolts when exciting element, the Duan Ke of the long chain macromolecule that makes commercial polymer in order to pass outspread, bend or rotate undertake oscillation, this is considered as the example of wavelengh of laser of mix into Thulium. These wavelengh of spectral limits of 2 μ M are already enough and adjacent the first harmonic that basic C-H bolts, c-H key is in 1.

Undertake drawing is absorbed when 7 μ M in order to found the drive of electronic vibration. The electron is oscillatory this word originates word " oscillatory " and " electron " , its meaning is, in an element mutual correlation mixes vibration and electronic interaction to be affected each other, and produce chemical corrode unlikelily when shorter wavelengh to change. No less than we use what mix into Thulium sees when fiber-optic laser every time in the lab in that way, the practical effect of electronic vibration is: Almost all and vacant polymer is in of other wavelengh absorb ability to exceed wavelengh of 1 μ M far. If the graph is shown 2 times, use the spatio-temporal control that stimulates beam of light, the bulk that passes data undertakes Bill - lambert law is absorbed, can height is controallable the ground is fused almost all optics are transparent thermoplastic polymer. Disappear of this new technology solders besides laser transmission (TTLW) main limitation of the technology, also do not need specific infra-red absorb implement, and the need when using TTLW technology is specific infra-red absorb implement with will mix transparent polymer. Half brilliant condition and polymer of the condition that be not brilliant the important polymer fractionize that this is laser beam machining of a further effect type. Laser fuses disparate Yu Rong dissolves commercial polymer metal, its reason depends on the vast difference that character draws between a large number of different polymer types, mixture composition and them. However, if this discusses,be confined to optical and transparent or translucent polymer, this one problem becomes easier understanding; Very apparent, add the part in these polymer, few meeting is affected absorb character. The condition of discriminative dispute brilliant that becomes apparent next and the distinction between half brilliant shape polymer. Preamble mentions the scattering effect that by the material in pottery and porcelain inhomogenous sex causes also is existence, polypropylene and polyethylene the scattering effect of polymer of such half brilliant shape is more apparent, the much passageway with because this is likely slower need heats in order to avoid degradation, unless the ply of material is less than 0.

5mm. This kind of technology also may restrict connective the biggest ply of component of polymer of half brilliant shape. The force that press a gram (PMMA) and polycarbonate (polymer of such the shape that be not brilliant can use PC) to only channel fuses on higher rate-of-rise of air temperature and join normally, the biggest ply is not a problem any more; However, this kind of technology suits the component of polymer of small-sized high accuracy with application and weaker link more it seems that. Undertaking cooperative with Yi Shiman chemical industry at present, the intensity that will compare laser to bolt and supersonic soldering intensity. The material that is investigated is tall transparent polyester (COPET) , this is an admirable polycarbonate substitute that does not contain double phenolic A, be used extensively at all sorts of consumption and product of medical treatment equipment. Preliminary result shows both intensity is same, below certain circumstance, technology of join of intensity excel ultrasonic. The mechanical intensity of polymer can be compared with metallic photograph rarely, the need of significant link area of polymer is very accordingly big, its join strength ability is close to the intensity of mother capable person. Moreover, if consider the low coefficient of thermal conductivity of polymer and low emissivity, mean general need to be close to the average power of 100W, ability receives a bit thick data repeatedly (make an appointment with 3mm) on, below effective rate, typical welding line width is 2-3mm. The absorption of water is characteristic the extend as a result of basic O-H is oscillatory, of liquid state water strong absorb belt making an appointment with 1950nm. This is enough and adjacent standard Thulium is fiber-optic the wavelengh of laser, rise significantly thereby absorb character. Water is general consist in a lot of organic with the inorganic compound in, the absorption that meant a large number of various data to improve spectral range of 2 μ M is characteristic, refer to a graph 3. Apparent, the improvement that absorbs character is quantified very hard, because this is planted - OH key may behave the form that is a lot of differring. Apparent, the effect may be the foundation of a lot of processes, this one process needs to get pilot local dehydrate technology. The dependency of fiber-optic laser is fiber-optic one of advantages of laser are brightness (or move saying is focusing function) , the small-sized and close together focusing that this decided to generation is used at ablation laser beam machining directly stimulates the ability of beam of light. For hot to the low power density that introduces because of needing very small facula size normally technology, although Gao Liang spends gauss beam of light to may be regarded as to be harmful, but the much model of bigger diameter 2 micron are fiber-optic laser also is practicable, because they are high-power,cover with tiles more close infra-red and fiber-optic laser. These laser can produce life top or bogus flat-roofed beam of light, if need big heat to treat area,this is meant again conversely, may use parallel not to have parallel beam of light of the focus, reduce systematic complexity and cost greatly thereby. Brief summary now, laser industry thinks mix into ytterbium is fiber-optic of laser but retractility already was proved, mix into Thulium is fiber-optic laser is to be based on same idea, expand to higher power so also become very feasible. If review laser trade 50 years, we see, like other laser type, especially as fiber-optic as ytterbium of successive wave mix into laser is same, when the average power that 100W can use to control in be being packed when concise and reliable industry, laser can become suddenly with a series of macroscopical industries treatment is carried out relevant, fundamental commercial application also begins to appear. Now, fiber-optic laser is located in mix into Thulium as much this one phase. CNC Milling