5 Simple Techniques For Laser Crystal
5 Simple Techniques For Laser Crystal
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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。
Additionally, some flexibility is lost in experiments if one are not able to Check out absorbers with distinct thickness or doping focus, for instance, without the need of exchanging the laser crystal by itself.
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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。
The utmost possible doping concentration can count strongly about the host product and its fabrication technique.
The host crystal is a great deal more than simply a means to fix the laser-Energetic ions at selected positions in space. Quite a few Attributes of the host materials are essential:
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。
For quasi-3-amount laser get media and even a few-degree attain media, one particular frequently has to read more Restrict the length to a price that is far too brief for economical pump absorption, as reabsorption outcomes would otherwise spoil the functionality. For facet pumping, extra issues occur into play; Apart from successful pump absorption, it is important to obtain a suitable spatial shape in the achieve profile.
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For various reasons, composite crystals are getting to be common. These Have a very spatially varying chemical composition and might be designed with Specific shapes.
With That idea, a single will not want an extra saturable absorber crystal, in order that 1 may make extra compact Q-switched laser setups with decreased inner parasitic losses. Nevertheless, unwelcome side effects may take place, such as acquiring unwanted valence states on the concerned ions or Electrical power transfers.
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。