Little Known Facts About Laser Crystal.
Little Known Facts About Laser Crystal.
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These tables include only the most typical host crystals; many Other folks exist, which happen to be significantly less routinely used.
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The host medium influences strongly the wavelength, bandwidth and transition cross-sections of pump and laser transitions and likewise the upper-point out lifetime.
晶体的光学质量对激光器的有效运行至关重要。晶体中的缺陷或杂质可能导致光散射、吸收甚至损坏晶体。高光学质量确保了稳定和高质量的激光束。
A higher area quality is naturally crucial. Specifications of surface area flatness are sometimes better than . This can help to stop both of those scattering losses and wavefront distortions which often can degrade the laser's beam good quality. Additionally, scratch and dig specifications
g. a skinny disk. As One more illustration, Q-switched lasers arrive at a better populace density during the higher laser stage and they are thus far more delicate to quenching outcomes and Power transfer procedures; therefore, a decreased doping density is often appropriate for these equipment. For top-electricity lasers, lower doping densities are sometimes utilized to limit the density of warmth technology, While slim-disk lasers get the job done finest with hugely doped crystals. A lot of laser solutions never get to the total efficiency potential because these information have not been adequately worked out.
The host crystal is way more than just a means to fix the laser-Energetic ions at sure positions in space. Quite a few Attributes on the host product are important:
蓝宝�?柱面�?球罩 偏振�?棱镜 红外光学元件 反射�?光学窗口 非球面镜 波片 分光�?制造能力
It is clear that distinctive applications lead to very different specifications on laser website acquire media. Because of this, a broad vary of various crystals are utilised, and producing the correct option is important for setting up lasers with optimum performance.
材料 激光晶体 晶体生长 光学性能 稀土离子 过渡族离子 components laser crystal crystal expansion optical performance rare earth ions transition group ions
The medium must have a higher transparency (reduced absorption and scattering) from the wavelength locations of pump and laser radiation, and fantastic optical homogeneity. To some extent, this is dependent upon the standard of the material, determined by particulars with the fabrication procedure.
With That idea, one particular won't will need yet another saturable absorber crystal, to ensure that a single may possibly make a lot more compact Q-switched laser setups with reduced internal parasitic losses. On the other hand, undesirable Unwanted effects might also occur, which include obtaining unwelcome valence states in the involved ions or Electrical power 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。