About Laser Crystal
About Laser Crystal
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The commonest laser-Energetic scarce earth ions and host media together with some common emission wavelengths are proven in the following desk:
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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 on the gain medium are most beneficial rely on various elements. The obtainable pump resource (variety of laser diode or lamp) and also the envisaged pumping arrangement are essential variables, but the material by itself also has some influence. By way of example, titanium–sapphire lasers have to be pumped with significant intensities, for which the form of a transversely cooled rod, operated with relatively tiny pump and laser beam diameter, is more proper than e.
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。
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。
g. a skinny disk. As Yet another illustration, Q-switched lasers arrive at the next populace density while in the upper laser amount and they are thus extra delicate to quenching results and Vitality transfer procedures; hence, a decreased doping density is usually suitable for these units. For prime-power lasers, lower doping densities are sometimes used to Restrict the density of warmth generation, While slim-disk lasers do the job most effective with very doped crystals. Lots of laser products tend not to reach the whole performance prospective since this sort of facts have not been correctly worked out.
The host crystal is considerably more than simply a means to fix the laser-active ions at selected positions in space. A number of Qualities on the host materials 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。
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材料 激光晶体 晶体生长 光学性能 稀土离子 过渡族离子 resources laser crystal crystal advancement optical functionality scarce earth ions changeover team ions
In 2017, we formulated the earth’s largest Ti∶sapphire crystal (Φ235 mm), which supported The ten PW laser output of Shanghai Superintense Ultrafast Laser Facility. The event of Yb and Tm doped GdScO3 laser crystals with very large emission spectra drives the event of laser diode pumped ultrafast sound-state lasers. With the rise in pulse Vitality, peak electricity, and repetition charge of reliable-condition lasers, laser crystals will develop to larger sizes, larger crystal good quality, and controllable key overall performance.
There is certainly a wide range of crystalline media, which may be grouped according to special atomic constituents and crystalline structures. Some essential groups of crystals are:
激光晶体（laser get more info 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。