What Does Laser Crystal Mean?
What Does Laser Crystal Mean?
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Distinct crystalline materials are certainly various relating to their hardness along with other Attributes, which figure out with which procedures and how quickly they can be Slice and polished with top quality.
人造红宝石激光晶体是首次实现激光输出的材料。可用焰熔法、提拉法或助熔剂法生产单晶。用提拉法容易获得大尺寸优质晶体。
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions and likewise the higher-condition life span.
激光晶体由发光中心和基质晶体两部分组成。大部分激光晶体的发光中心由激活离子构成，激活离子部分取代基质晶体中的阳离子形成掺杂型激光晶体。激活离子成为基质晶体组分的一部分时，则构成自激活激光晶体。
The most feasible doping focus can depend strongly about the host materials and its fabrication system.
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A substantial damage threshold with regard to pulse fluence or peak intensity is often crucial for top-Vitality amplifiers.
These ions help the crystal to amplify mild within the laser wavelength by way of stimulated emission, when Electrical power is supplied on the crystal by using absorption of pump mild (�?optical pumping
Which geometry, dopant and doping focus from the achieve medium are most useful rely on numerous variables. The available pump source (style of laser diode or lamp) and the envisaged pumping arrangement are essential components, but the fabric itself also has some influence. By way of example, titanium–sapphire lasers ought to be pumped with high intensities, for which the form of a transversely cooled rod, operated with reasonably compact pump and laser beam diameter, is a lot more suitable than e.
It might be oriented for around perpendicular incidence with the laser beam, or at Brewster's angle. It might be preset in some strong mount which also acts as being a heat sink. Greater crystals are frequently employed for aspect pumping e.g. with substantial-electric power diode bars.
The commonest laser-Lively exceptional earth ions and host media together with some common emission wavelengths are shown in the subsequent desk:
Several laser crystal products have already been shown in which some saturable absorber product is incorporated for passive Q switching of the laser.
For various causes, composite crystals are getting to be well-liked. These Use a spatially varying chemical composition and may be designed with Unique designs.
There may be a variety of crystalline media, that may be grouped in accordance to big atomic constituents and crystalline structures. Some essential groups of crystals are:
With That idea, just one would not need an additional saturable absorber crystal, so that 1 might make much more compact Q-switched laser setups with reduce internal parasitic losses. Nevertheless, unwanted Negative effects can also happen, like obtaining unwelcome valence states with the included ions or Vitality transfers.
GWU presents all widespread laser crystals (Nd:YVO4, Nd:YAG, Yb:YAG click here and so forth.) having a wide range of specs. In addition to the well-recognized components, revolutionary crystals with superb Houses like Yb:CALGO can open new horizons for demanding laser purposes. Despite whether or not unique items for R & D purposes are expected or Price-economical numbers in compact, medium or huge batches with in-time supply for your output line are necessary: GWU’s focused services helps you to locate the ideal Main components for your software.
Laser crystals are optical crystals �?typically solitary crystals (monocrystalline optical elements) �?that are utilised as gain media for sound-point out lasers. In most cases, They can be doped with possibly trivalent rare earth ions or transition steel ions.
激光晶体（laser crystal），可将外界提供的能量通过光学谐振腔转化为在空间和时间上相干的具有高度平行性和单色性激光的晶体材料。是晶体激光器的工作物质。