About Laser Crystal
About Laser Crystal
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Seen solid-condition lasers according to laser crystals are compact and lightweight. Lasers from deep crimson to blue have already been described. Especially, there have been lots of experiences on Pr3+ doped laser crystals, and continual wave lasers all around 490 nm have already been obtained. Ti∶sapphire is the principle get crystal for ultrafast lasers. Superintense ultrafast lasers with peak electrical power ranging from various hundred terawatts to 10 petawatts involve high-high quality and huge-sized Ti∶sapphire crystal. The origin of defect linked optical absorption in Ti∶sapphire and The expansion of enormous-sized high-excellent crystals are two important issues that urgently have to be addressed. In recent times, we analyzed the system of defect associated optical absorption in Ti∶sapphire theoretically, and grew substantial-sized substantial-top quality crystals via warmth Trade method. The main activating ions for 1 μm laser crystals are Nd3+ and Yb3+. Nd∶YAG could be the most widely utilized laser crystal. Recently, we explored a number of new Nd3+ doped fluoride and oxide laser crystals, and solved the emission cross portion challenge of Nd∶Lu3Al5O12. SIOM claimed a fresh sort of laser crystal Yb∶GdScO3, of which the obtain bandwidth is about eighty five nm. The commonly applied 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 part, and its emission wavelength is lengthier than 2 μm. We analyzed the growth, spectroscopy, and laser general performance of Tm∶LiYF4, Tm∶LiLuF4, Ho∶LiYF4, Tm,Ho∶LiYF4, and Tm,Ho∶LiLuF4 crystals.
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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。
Moreover, some versatility is misplaced in experiments if one particular cannot try out absorbers with distinctive thickness or doping focus, by way of example, without having exchanging the laser crystal by itself.
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions and in addition the higher-point out 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。
活性离子在激光晶体内发生的能量跃迁对激光操作至关重要。大多数激光操作都是通过四能级系统原理进行的，确保连续操作并防止浪费的非辐射衰变。
g. a skinny disk. As Yet another illustration, Q-switched lasers get to the next populace density in the higher laser degree and so are hence extra delicate to quenching effects and Electricity transfer procedures; consequently, a decreased doping density is commonly appropriate for these devices. For prime-ability lasers, reduce doping densities are often accustomed to Restrict the density of warmth era, Even though slender-disk lasers perform ideal with really doped crystals. Lots of laser products and solutions never get to the entire functionality likely since this sort of particulars haven't been appropriately worked out.
A few laser crystal elements are already demonstrated wherever some saturable absorber materials is included for passive Q switching of a laser.
激光晶体的核心由固态晶体材料组成，通常掺杂了某些能够通过受激发射产生光放大的离子。这些离子的性质对激光晶体的性能起决定作用。
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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 elements laser crystal crystal development optical general performance uncommon earth ions transition team ions
The medium click here should have a substantial transparency (low absorption and scattering) during the wavelength locations of pump and laser radiation, and fantastic optical homogeneity. To some extent, this is determined by the standard of the fabric, determined by aspects on the fabrication course of action.
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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。