Laser Crystal No Further a Mystery
Laser Crystal No Further a Mystery
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Seen stable-condition lasers based on laser crystals are compact and lightweight. Lasers from deep purple to blue are already described. In particular, there have been lots of experiences on Pr3+ doped laser crystals, and steady wave lasers all over 490 nm have already been obtained. Ti∶sapphire is the key achieve crystal for ultrafast lasers. Superintense ultrafast lasers with peak ability ranging from several hundred terawatts to 10 petawatts require higher-high-quality and huge-sized Ti∶sapphire crystal. The origin of defect related optical absorption in Ti∶sapphire and The expansion of large-sized higher-quality crystals are two important concerns that urgently must be dealt with. In recent years, we analyzed the system of defect similar optical absorption in Ti∶sapphire theoretically, and grew significant-sized high-high-quality crystals by means of heat exchange process. The key activating ions for one μm laser crystals are Nd3+ and Yb3+. Nd∶YAG would be the most generally utilized laser crystal. In recent times, we explored various new Nd3+ doped fluoride and oxide laser crystals, and solved the emission cross portion problem of Nd∶Lu3Al5O12. SIOM documented a whole new variety of laser crystal Yb∶GdScO3, of which the get bandwidth is about 85 nm. The typically employed activation ions for 2 μm laser crystals are Tm3+ and Ho3+. Tm3+ is often specifically pumped by laser diode. Ho3+ has larger sized stimulated emission cross part, and its emission wavelength is for a longer time than two μm. We researched The expansion, spectroscopy, and laser effectiveness 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。
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。
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。
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions and also the upper-condition life time.
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。
A high surface high-quality is certainly essential. Technical specs of floor flatness in many cases are a lot better than . This can help to stop both equally scattering losses and wavefront distortions which could degrade the laser's beam top quality. Furthermore, scratch and dig specifications
The utmost possible doping concentration can count strongly over the host materials and its fabrication strategy.
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。
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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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 performance exceptional earth ions transition team ions
The medium must have a significant transparency (low absorption and scattering) inside the wavelength locations of pump and laser radiation, and fantastic optical homogeneity. To some extent, this depends upon the standard of the fabric, determined by specifics with the fabrication course of action.
It here might be oriented for close to perpendicular incidence with the laser beam, or at Brewster's angle. It can be set in some good mount which also acts like a warmth sink. More substantial crystals are generally employed for facet pumping e.g. with higher-electricity 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。