The Definitive Guide to Laser Crystal
The Definitive Guide to Laser Crystal
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These tables include only the most typical host crystals; many Other individuals exist, which are a lot less often utilised.
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为了使激光器有效运作，需要有效管理运行过程中产生的热量。具有良好热导率的激光晶体可以更有效地散热，防止热透镜效应或断裂。
On top of that, some versatility is shed in experiments if one can not try out absorbers with diverse thickness or doping focus, such as, without exchanging the laser crystal alone.
Which geometry, dopant and doping concentration of the get medium are most useful rely upon various components. The readily available pump supply (sort of laser diode or lamp) as well as the envisaged pumping arrangement are very important variables, but the material itself also has some affect. As an example, titanium–sapphire lasers have to be pumped with superior intensities, for which the shape of a transversely cooled rod, operated with relatively smaller pump and laser beam diameter, is more correct 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。
Naturally, it is rather appealing that a given crystal good quality is developed constantly, Even though distinctive laser types can have another sensitivity to content parameters.
The most feasible doping focus can depend strongly about the host material and its fabrication technique.
The host crystal is way more than simply a method to repair the laser-Lively ions at specific positions in Room. A variety of Attributes of your host product are important:
量子效率是发射光子数量与吸收光子数量的比率。高量子效率表明更大部分吸收能量被转化为激光光束，有助于提高激光的整体效率。
These surfaces which are handed through the laser beam are normally both oriented at Brewster's angle or have an anti-reflection coating.
材料 激光晶体 晶体生长 光学性能 稀土离子 过渡族离子 resources laser crystal crystal expansion optical performance uncommon earth ions transition group ions
The medium ought to have a significant transparency (minimal absorption and scattering) within the wavelength areas of pump and laser radiation, and great optical homogeneity. To some extent, this relies on the caliber of the fabric, determined by facts in the fabrication system.
With that concept, a single will not want an extra saturable absorber crystal, to ensure that 1 may make extra compact Q-switched laser setups with decreased inside parasitic losses. On the other hand, undesired Uncomfortable side effects may additionally happen, which include acquiring unwelcome valence states in Laser Crystal the associated ions or Vitality transfers.
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。