The best Side of Laser Crystal
The best Side of Laser Crystal
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The most common laser-active exceptional earth ions and host media together with some typical emission wavelengths are proven in the following table:
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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。
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。
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions as well as the higher-condition 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。
活性离子在激光晶体内发生的能量跃迁对激光操作至关重要。大多数激光操作都是通过四能级系统原理进行的，确保连续操作并防止浪费的非辐射衰变。
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 few laser crystal resources happen to be demonstrated where by some saturable absorber materials is integrated for passive Q switching of the laser.
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 different applications result in quite different requirements on laser acquire media. Because read more of this, a broad range of various crystals are made use of, and making the right preference is important for setting up lasers with optimum 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 elements laser crystal crystal growth optical functionality scarce earth ions changeover group ions
The medium ought to have a significant transparency (minimal absorption and scattering) within the wavelength locations of pump and laser radiation, and very good optical homogeneity. To some extent, this is determined by the quality of the material, based on information from the fabrication course of action.
With That idea, just one won't need an extra saturable absorber crystal, in order that a single might make much more compact Q-switched laser setups with lower interior parasitic losses. On the other hand, undesirable Unwanted effects may take place, like obtaining undesired valence states in 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。