Laser Crystal for Dummies
Laser Crystal for Dummies
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The most common laser-Lively exceptional earth ions and host media together with some standard emission wavelengths are demonstrated in the next table:
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 �?usually solitary crystals (monocrystalline optical products) �?which happen to be employed as acquire media for stable-point out lasers. Typically, They may be doped with both trivalent scarce earth ions or transition metal ions.
激光晶体中活性离子的作用是什么？ 活性离子在激光晶体中负责通过受激发射产生激光光线。
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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。
Obviously, it is extremely desirable that a given crystal high-quality is generated persistently, Despite the fact that diverse laser styles might have a distinct sensitivity to material parameters.
The utmost possible doping concentration can count strongly to the host content and its fabrication process.
The host crystal is a lot more than simply a method to repair the laser-active ions at specific positions in Place. A number of Qualities on the 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 that happen to be passed from the laser beam are Typically both oriented more info 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 supplies laser crystal crystal progress optical functionality rare earth ions changeover group ions
The medium must have a superior transparency (very low absorption and scattering) within the wavelength locations of pump and laser radiation, and excellent optical homogeneity. To some extent, this depends upon the caliber of the fabric, determined by information of the fabrication approach.
It might be oriented for in close proximity to perpendicular incidence of your laser beam, or at Brewster's angle. It might be preset in certain good mount which also acts like a heat sink. Greater crystals are frequently employed for aspect pumping e.g. with substantial-electrical power diode bars.
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。