The Single Best Strategy To Use For Laser Crystal
The Single Best Strategy To Use For Laser Crystal
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These tables have only the most common host crystals; a lot of Other folks exist, which might be a lot less regularly made use of.
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。
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The host medium influences strongly the wavelength, bandwidth and transition cross-sections of pump and laser transitions and also the higher-point out life time.
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 high floor top quality is needless to say crucial. Technical specs of floor flatness are sometimes better than . This allows to stop the two scattering losses and wavefront distortions that may degrade the laser's beam excellent. Moreover, scratch and dig technical specs
g. a thin disk. As Yet another instance, Q-switched lasers achieve a greater population density within the upper laser degree and so are as a result a lot more delicate to quenching outcomes and Electricity transfer processes; consequently, a lower doping density is commonly appropriate for these devices. For prime-electricity lasers, lower doping densities will often be used to Restrict the density of heat era, Though slender-disk lasers operate best with hugely doped crystals. Several laser solutions usually do not reach the complete general performance possible for the reason that this kind of facts haven't been properly worked out.
The host crystal is way more than just a method to repair the laser-Energetic read more ions at particular positions in Area. A number of properties of the host substance are very 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。
It is clear that diverse programs lead to pretty diverse needs on laser gain media. This is why, a wide selection of different crystals are utilised, and creating the ideal decision is important for constructing lasers with ideal general performance.
材料 激光晶体 晶体生长 光学性能 稀土离子 过渡族离子 products laser crystal crystal growth optical performance rare earth ions changeover group ions
The medium ought to have a large transparency (low absorption and scattering) while in the wavelength locations of pump and laser radiation, and superior optical homogeneity. To some extent, this is dependent upon the quality of the material, based on particulars on the fabrication process.
It may be oriented for in the vicinity of perpendicular incidence of the laser beam, or at Brewster's angle. It might be fastened in a few solid mount which also functions being a heat sink. Larger crystals usually are employed for side pumping e.g. with significant-electric power diode bars.
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