The Laser Crystal Diaries
The Laser Crystal Diaries
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Noticeable good-state lasers according to laser crystals are compact and lightweight. Lasers from deep purple to blue are actually documented. Specially, there have been lots of studies on Pr3+ doped laser crystals, and constant wave lasers about 490 nm happen to be realized. Ti∶sapphire is the most crucial get crystal for ultrafast lasers. Superintense ultrafast lasers with peak power starting from numerous hundred terawatts to 10 petawatts call for higher-good quality and large-sized Ti∶sapphire crystal. The origin of defect relevant optical absorption in Ti∶sapphire and The expansion of enormous-sized substantial-excellent crystals are two critical difficulties that urgently need to be addressed. Lately, we analyzed the mechanism of defect related optical absorption in Ti∶sapphire theoretically, and grew massive-sized higher-excellent crystals by way of heat exchange system. The main activating ions for 1 μm laser crystals are Nd3+ and Yb3+. Nd∶YAG is definitely the most generally employed laser crystal. In recent times, we explored numerous new Nd3+ doped fluoride and oxide laser crystals, and solved the emission cross part trouble of Nd∶Lu3Al5O12. SIOM claimed a brand new kind of laser crystal Yb∶GdScO3, of which the obtain bandwidth is about 85 nm. The commonly utilized activation ions for two μm laser crystals are Tm3+ and Ho3+. Tm3+ could be specifically pumped by laser diode. Ho3+ has much larger stimulated emission cross portion, and its emission wavelength is for a longer period than two μm. We researched the growth, spectroscopy, and laser efficiency of Tm∶LiYF4, Tm∶LiLuF4, Ho∶LiYF4, Tm,Ho∶LiYF4, and Tm,Ho∶LiLuF4 crystals.
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。
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Which geometry, dopant and doping focus of your gain medium are most advantageous rely on many components. The available pump supply (type of laser diode or lamp) and the envisaged pumping arrangement are crucial components, but the fabric by itself also has some influence. For instance, read more titanium–sapphire lasers need to be pumped with higher intensities, for which the shape of a transversely cooled rod, operated with reasonably modest pump and laser beam diameter, is much 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 most attainable doping focus can depend strongly within the host content and its fabrication system.
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。
It is clear that various applications cause extremely diverse necessities on laser attain media. Because of this, a broad assortment of different crystals are utilized, and producing the correct decision is essential for constructing lasers with the best possible 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 development optical efficiency exceptional earth ions changeover group ions
The medium ought to have a superior transparency (small absorption and scattering) in the wavelength locations of pump and laser radiation, and very good optical homogeneity. To some extent, this is dependent upon the caliber of the material, determined by information from the fabrication method.
It could be oriented for close to perpendicular incidence of your laser beam, or at Brewster's angle. It may be fastened in some reliable mount which also functions as being a warmth sink. Bigger crystals usually are used for side pumping e.g. with substantial-ability diode bars.
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。