Laser Crystal Fundamentals Explained
Laser Crystal Fundamentals Explained
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Laser modeling and simulation can be utilized to reliably figure out the the best possible crystal Proportions, doping density and possibly values of supplemental parameters.
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 crystal is far more than just a means to fix the laser-Energetic ions at specified positions in Place. Many properties from the host materials are essential:
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。
For quasi-3-level laser attain media or maybe 3-level gain media, a person generally has to limit the duration to a price which can be as well shorter for successful pump absorption, as reabsorption results would otherwise spoil the general performance. For aspect pumping, extra criteria arrive into play; Aside from effective pump absorption, it can be crucial to get an appropriate spatial shape with the acquire profile.
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A substantial damage threshold with regard to pulse fluence or peak depth might be important for prime-energy amplifiers.
作为工业上使用较多的都是高掺钇铝石榴石，也就是说掺入不同的元素来达到不同的效果；作为工业激光，关注以下性能：
Which geometry, dopant and doping concentration on the gain medium are most beneficial rely upon a number of variables. The out there pump source (form of laser diode or lamp) and the envisaged pumping arrangement are essential variables, but the fabric alone 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 smaller pump and laser beam diameter, is a lot more suitable than e.
These tables comprise only the most typical host crystals; quite a few Other people exist, which can be significantly less routinely applied.
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A couple of laser crystal resources are actually shown wherever some saturable absorber product is included for passive Q switching of a laser.
Not surprisingly, it's very fascinating that a provided crystal top quality is created regularly, although distinctive laser models can have a different sensitivity to product parameters.
There is certainly an array of crystalline media, which can be grouped according to big atomic constituents and crystalline structures. Some critical teams of crystals are:
With that concept, one particular doesn't need to have an extra saturable absorber crystal, to make sure that 1 may well make additional compact Q-switched laser setups with decrease inner parasitic losses. However, unwelcome Unwanted effects may additionally occur, such as getting undesirable valence states in the associated ions or Electricity transfers.
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Laser crystals are optical crystals �?typically single crystals (monocrystalline optical products) �?which are made use of as here achieve media for reliable-condition lasers. In most cases, They can be doped with either trivalent uncommon earth ions or changeover metal 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。