What Does Laser Crystal Mean?
What Does Laser Crystal Mean?
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Laser modeling and simulation can be used to reliably determine the the best possible crystal dimensions, doping density And maybe values of added parameters.
The medium should have a substantial transparency (small absorption and scattering) within the wavelength areas of pump and laser radiation, and fantastic optical homogeneity. To some extent, this depends upon the caliber of the fabric, based on aspects from the fabrication method.
The host crystal is way more than just a way to fix the laser-active ions at specific positions in Room. A variety of Attributes of 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-degree laser acquire media or perhaps a few-amount achieve media, one particular frequently must Restrict the size to a price that is too shorter for successful pump absorption, as reabsorption results would otherwise spoil the general performance. For aspect pumping, extra considerations appear into Perform; besides successful pump absorption, it is necessary to obtain an appropriate spatial condition with the acquire profile.
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Additionally, some adaptability is dropped in experiments if 1 cannot Check out absorbers with various thickness or doping focus, as an example, with out exchanging the laser crystal alone.
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 in the get medium are most useful depend on numerous variables. The out there pump source (type of laser diode or lamp) and Nonlinear Crystal also the envisaged pumping arrangement are essential variables, but the material by itself also has some affect. One example is, titanium–sapphire lasers have to be pumped with substantial intensities, for which the form of a transversely cooled rod, operated with comparatively compact pump and laser beam diameter, is a lot more appropriate than e.
These tables contain only the commonest host crystals; lots of Other folks exist, which can be much less frequently made use of.
The most typical laser-active uncommon earth ions and host media along with some normal emission wavelengths are shown in the subsequent table:
Those people surfaces that happen to be passed because of the laser beam are Generally both oriented at Brewster's angle or have an anti-reflection coating.
Needless to say, it is rather appealing that a offered crystal excellent is created continuously, Though diverse laser types may have a unique sensitivity to substance parameters.
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。
With that concept, one won't want yet another saturable absorber crystal, in order that a person could make more compact Q-switched laser setups with decrease inner parasitic losses. Even so, unwelcome side effects may additionally manifest, including obtaining unwelcome valence states in the involved ions or Electricity transfers.
GWU features all frequent laser crystals (Nd:YVO4, Nd:YAG, Yb:YAG and so on.) having a broad selection of technical specs. Other than the effectively-set up supplies, progressive crystals with excellent Homes like Yb:CALGO can open up new horizons for demanding laser applications. Regardless of no matter whether particular person parts for R & D purposes are needed or Price-economical quantities in smaller, medium or massive batches with in-time shipping and delivery for your manufacturing line are necessary: GWU’s committed support helps to locate the very best Main parts in your application.
It is clear that different programs lead to pretty distinct requirements on laser obtain media. Due to this, a broad array of various crystals are employed, and building the right selection is important for constructing lasers with optimum general performance.
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。