Laser Crystal - An Overview
Laser Crystal - An Overview
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Distinct crystalline supplies are really distinct relating to their hardness and also other Attributes, which decide with which methods And just how effortlessly they are often Slice and polished with good 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 transition cross-sections of pump and laser transitions and also the upper-state lifetime.
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 gain media or even a few-degree acquire media, one normally ought to limit the length to a price which can be too shorter for effective pump absorption, as reabsorption consequences would normally spoil the functionality. For side pumping, supplemental issues come into Participate in; Aside from efficient pump absorption, it can be crucial to get an acceptable spatial form of the achieve profile.
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A superior hurt threshold concerning pulse fluence or peak intensity could be vital for top-energy amplifiers.
These ions empower the crystal to amplify light-weight on the laser wavelength by using stimulated emission, when Electricity is supplied to your crystal via absorption of pump light (�?optical pumping
Which geometry, dopant and doping concentration from the get medium are most beneficial rely upon quite a few aspects. The obtainable pump resource (type of laser diode or lamp) as well as the envisaged pumping arrangement are essential elements, but the material by itself also has some affect. One example is, titanium–sapphire lasers should be pumped with substantial intensities, for which the form of a transversely cooled rod, operated with relatively tiny pump and laser beam diameter, is more suitable than e.
It might be oriented for in the vicinity of perpendicular incidence of your laser beam, or at Brewster's angle. It could be set in certain stable mount which also functions to be a warmth sink. Larger crystals are usually employed for side pumping e.g. with superior-electric power diode bars.
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Those surfaces which might be handed because of the laser beam are Commonly both oriented at Brewster's angle or have an anti-reflection coating.
Certainly, it's very appealing that a presented crystal high quality is made Nonlinear Crystal regularly, Whilst distinct laser designs may have a different sensitivity to substance parameters.
There exists an array of crystalline media, which may be grouped in accordance to special atomic constituents and crystalline constructions. Some vital groups of crystals are:
With that concept, 1 isn't going to want yet another saturable absorber crystal, in order that a person might make a lot more compact Q-switched laser setups with reduced inner parasitic losses. Nonetheless, unwelcome Unwanted effects can also arise, for instance getting unwelcome valence states of the included ions or Vitality transfers.
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Laser crystals are optical crystals �?commonly single crystals (monocrystalline optical products) �?that happen to be utilized as get media for sound-point out lasers. Normally, These are doped with either trivalent exceptional 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。