The Basic Principles Of Laser Crystal
The Basic Principles Of Laser Crystal
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激光晶体的极化性能可能会影响输出激光束的质量和特性。有些激光晶体产生线性偏振光，这对某些应用可能有益。
Laser crystals are optical crystals �?generally one crystals (monocrystalline optical resources) �?that happen to be utilized as get media for sound-condition lasers. In most cases, They can be doped with possibly trivalent rare earth ions or transition steel ions.
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Which geometry, dopant and doping concentration from the acquire medium are most advantageous depend on a number of elements. The accessible pump resource (variety of laser diode or lamp) as well as envisaged pumping arrangement are very important aspects, but the material itself also has some influence. For instance, titanium–sapphire lasers ought to be pumped with significant intensities, for which the form of the transversely cooled rod, operated with comparatively small pump and laser beam diameter, is a lot more proper than e.
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。
A large surface area quality is naturally important. Specifications of surface area flatness in many cases are much better than . This allows to avoid each scattering losses and wavefront distortions which might degrade the laser's beam good quality. Moreover, scratch and dig requirements
亚稳态寿命也起着重要作用。较长的寿命允许更多的储能和实现粒子数反转的更高潜力，这对激光动作至关重要。
A handful of laser crystal resources happen to be demonstrated where by some saturable absorber materials is integrated for passive Q switching of the laser.
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These surfaces which are handed through the laser beam are normally both oriented at Brewster's angle or have an anti-reflection coating.
主体材料中活性离子掺杂物的数量是关键因素。它影响了激光的效率和性能。过低的浓度可能导致低输出，过高的浓度可能导致消光效应，降低晶体的效率。
The medium must have a substantial transparency (minimal absorption and scattering) in the wavelength areas of pump and laser radiation, and very good optical homogeneity. To some extent, this depends on the standard of the material, determined by specifics in the fabrication course of action.
With That idea, just one won't will need a further saturable absorber crystal, to ensure a single may well make far more compact Q-switched laser setups with reduced internal parasitic losses. However, undesired Uncomfortable side Laser Crystal effects may additionally happen, which include acquiring unwelcome valence states in the associated ions or Strength transfers.
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。