About Laser Crystal
About Laser Crystal
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The commonest laser-Lively unusual earth ions and host media together with some regular emission wavelengths are revealed in the subsequent desk:
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。
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions and likewise the higher-condition life time.
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A significant surface area excellent is naturally important. Specs of surface flatness in many cases are better than . This helps to prevent both equally scattering losses and wavefront distortions which often can degrade the laser's beam top quality. Moreover, scratch and dig specifications
g. a skinny disk. As another example, Q-switched lasers attain a greater population density inside the higher laser amount and they are consequently more sensitive to quenching outcomes and Power transfer processes; hence, a lessen doping density is commonly appropriate for these equipment. For high-electrical power lasers, reduced doping densities are often used to limit the density of warmth technology, although slender-disk lasers work ideal with highly doped crystals. Many laser goods usually do not get to the comprehensive overall performance likely mainly because these types of specifics have not been correctly labored out.
The host crystal is far more than simply a means to fix the click here laser-Lively ions at sure positions in space. Numerous properties in the host materials are crucial:
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。
For quasi-three-degree laser acquire media and even 3-amount obtain media, just one generally should Restrict the length to a worth which happens to be far too quick for productive pump absorption, as reabsorption outcomes would usually spoil the general performance. For facet pumping, supplemental considerations come into Participate in; besides efficient pump absorption, it is important to obtain an acceptable spatial condition of the achieve profile.
材料 激光晶体 晶体生长 光学性能 稀土离子 过渡族离子 supplies laser crystal crystal growth optical functionality rare earth ions transition team ions
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With That idea, just one will not need to have a further saturable absorber crystal, in order that a person may possibly make a lot more compact Q-switched laser setups with lower inside parasitic losses. Nonetheless, unwanted Unintended effects may additionally happen, which include acquiring unwelcome valence states on the involved ions or Strength transfers.
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。