The smart Trick of Laser Crystal That No One is Discussing
The smart Trick of Laser Crystal That No One is Discussing
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The commonest laser-Energetic rare earth ions and host media together with some usual 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 �?ordinarily solitary crystals (monocrystalline optical elements) �?that happen to be used as achieve media for solid-condition lasers. Most often, 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。
Which geometry, dopant and doping focus of your gain medium are most beneficial rely on a number of elements. The accessible pump source (type of laser diode or lamp) and the envisaged pumping arrangement are important things, but the fabric itself also has some impact. One example is, titanium–sapphire lasers must be pumped with higher intensities, for which the shape of a transversely cooled rod, operated with somewhat tiny pump and laser beam diameter, is more acceptable than e.
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A significant area high quality is not surprisingly important. Specifications of surface flatness are frequently a lot better than . This allows to avoid each scattering losses and wavefront distortions which might degrade the laser's beam top quality. Moreover, scratch and dig specs
探索激光晶体的领域，可以让我们看到科学和技术相结合的奇迹，为我们带来了令人难以置信的进步。这些激光晶体，每一种都在组成和特性上独具匠心，是推动现代世界众多应用的动力。
The host crystal is far more than just a means to fix the laser-Energetic ions at selected positions in House. A number of properties in the host materials are crucial:
热膨胀和收缩系数对确定激光晶体的热透镜特性至关重要。最小化热透镜效应对于在广泛的操作温度范围内保持光束质量至关重要。
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For many explanations, composite crystals are getting to be common. These Use a spatially various chemical composition and can be built with Exclusive shapes.
It may be oriented for close to perpendicular incidence on the laser beam, or at Brewster's angle. It could be preset in certain good mount which also functions for a warmth sink. More substantial crystals usually are employed for aspect pumping e.g. with large-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。