5 Easy Facts About Nonlinear Crystal Described
5 Easy Facts About Nonlinear Crystal Described
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Laser modeling and simulation may be used to reliably figure out the optimum crystal dimensions, doping density And maybe values of added 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 medium influences strongly the wavelength, bandwidth and transition cross-sections of pump and laser transitions and in addition the upper-condition life time.
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-three-level laser attain media or maybe 3-level attain media, just one typically has to limit the duration to a value which is much too small for effective pump absorption, as reabsorption effects would usually spoil the functionality. For side pumping, more factors come into Enjoy; In addition to economical pump absorption, it is necessary to obtain an appropriate spatial shape on the acquire profile.
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Furthermore, some flexibility is missing in experiments if a single cannot Check out absorbers with various thickness or doping focus, as an example, without exchanging the laser crystal by itself.
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 focus of the obtain medium are most beneficial count on a number of components. The available pump source (form of laser diode or lamp) as well as envisaged pumping arrangement are important aspects, but the fabric by itself also has some impact. For example, titanium–sapphire lasers need to be pumped with large intensities, for which the form of the transversely cooled rod, operated with somewhat compact pump and laser beam diameter, is a lot more appropriate than e.
These tables incorporate only the most typical host crystals; several Other individuals exist, that happen to be considerably less usually employed.
The most common laser-Lively scarce earth ions and host media along with some standard emission wavelengths are shown in the subsequent desk:
A number of laser crystal materials are already shown in which some saturable absorber product is incorporated website for passive Q switching of a laser.
For many causes, composite crystals are getting to be well-liked. These Have a very spatially different chemical composition and can be created with Distinctive shapes.
You can find a wide range of crystalline media, which can be grouped according to important atomic constituents and crystalline structures. Some essential groups of crystals are:
With That idea, a person doesn't want an extra saturable absorber crystal, to ensure one particular may possibly make far more compact Q-switched laser setups with decreased inside parasitic losses. Even so, undesired Uncomfortable side effects may come about, for example acquiring unwanted valence states of the associated ions or Electricity transfers.
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Laser crystals are optical crystals �?commonly one crystals (monocrystalline optical components) �?which might be utilized as achieve media for good-state lasers. Usually, They are really doped with either trivalent uncommon 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。