Laser Crystal for Dummies

Laser Crystal for Dummies

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The most common laser-active uncommon earth ions and host media together with some usual emission wavelengths are proven in the next 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。

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Which geometry, dopant and doping focus of your acquire medium are most beneficial count on a number of components. The available pump source (sort of laser diode or lamp) as well as envisaged pumping arrangement are important factors, but the fabric alone also has some influence. By way of example, titanium–sapphire lasers must be pumped with high intensities, for which the form of the transversely cooled rod, operated with somewhat tiny pump and laser beam diameter, is more acceptable than e.

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。

激光晶体的损伤阈值与其能承受的最大光强有关，而不会遭受物理或结构损伤。高损伤阈值对于确保高功率激光应用的耐久性和长寿命至关重要。

The maximum possible doping focus can depend strongly around the host material and its fabrication process.

激光晶体的效率在很大程度上依赖于某些属性，这些属性不仅限于其基本组成。这些特性决定了产生的激光光束的质量和随后的应用。

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。

For quasi-3-stage laser obtain media or maybe 3-degree obtain media, 1 often ought to Restrict the length to a worth and that is way too quick for efficient pump absorption, as reabsorption outcomes would or else spoil the performance. For facet pumping, added concerns arrive into Perform; Apart from successful pump absorption, it is necessary to acquire a suitable spatial condition of the get profile.

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 development optical performance rare earth ions transition group ions 

In 2017, we created the world’s major Ti∶sapphire crystal (Φ235 mm), which supported the 10 PW laser output of Shanghai Superintense Ultrafast Laser Facility. The development of Yb and Tm doped GdScO3 laser crystals with really wide emission spectra drives the development of laser diode pumped ultrafast good-state lasers. With the increase in pulse energy, peak electric power, and repetition amount of stable-state lasers, laser crystals will build to bigger measurements, better crystal quality, and controllable important functionality.

It could be oriented for in the Laser Crystal vicinity of perpendicular incidence in the laser beam, or at Brewster's angle. It may be fastened in certain strong mount which also acts like a heat sink. More substantial crystals usually are useful for facet pumping e.g. with significant-ability 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。