Noticeable reliable-point out lasers based on laser crystals are compact and light-weight. Lasers from deep pink to blue are actually described. Specially, there were lots of experiences on Pr3+ doped laser crystals, and constant wave lasers close to 490 nm have been accomplished. Ti∶sapphire is the main attain crystal for ultrafast lasers. Superintense ultrafast lasers with peak electrical power starting from several hundred terawatts to 10 petawatts involve high-quality and enormous-sized Ti∶sapphire crystal. The origin of defect similar optical absorption in Ti∶sapphire and the growth of large-sized significant-high quality crystals are two significant problems that urgently must be addressed. Recently, we analyzed the mechanism of defect related optical absorption in Ti∶sapphire theoretically, and grew significant-sized large-quality crystals by warmth Trade method. The leading activating ions for one μm laser crystals are Nd3+ and Yb3+. Nd∶YAG could be the most generally utilized laser crystal. Lately, we explored numerous new Nd3+ doped fluoride and oxide laser crystals, and solved the emission cross part problem of Nd∶Lu3Al5O12. SIOM noted a different form of laser crystal Yb∶GdScO3, of which the attain bandwidth is about eighty five nm. The generally employed activation ions for two μm laser crystals are Tm3+ and Ho3+. Tm3+ may be immediately pumped by laser diode. Ho3+ has larger stimulated emission cross section, and its emission wavelength is lengthier than 2 μm. We analyzed The expansion, spectroscopy, and laser performance of Tm∶LiYF4, Tm∶LiLuF4, Ho∶LiYF4, Tm,Ho∶LiYF4, and Tm,Ho∶LiLuF4 crystals.

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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。

作为工业上使用较多的都是高掺钇铝石榴石，也就是说掺入不同的元素来达到不同的效果；作为工业激光，关注以下性能：

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Of course, it is extremely appealing that a supplied crystal high-quality is made continuously, Even though various laser models may have another sensitivity to content parameters.

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。

A handful of laser crystal resources have already been shown where by some saturable absorber product is integrated for passive Q switching of the laser.

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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主体材料中活性离子掺杂物的数量是关键因素。它影响了激光的效率和性能。过低的浓度可能导致低输出，过高的浓度可能导致消光效应，降低晶体的效率。

The medium should have a high transparency (lower absorption and scattering) during the wavelength areas of pump and laser radiation, and excellent optical homogeneity. To some extent, this depends upon the quality of the material, based on aspects on the fabrication course of action.

There is an array of crystalline media, that may be grouped in accordance to big atomic constituents and crystalline structures. Some crucial teams of crystals are:

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