Not known Facts About Laser Crystal
Not known Facts About Laser Crystal
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These tables include only the commonest host crystals; many Other folks exist, that are a lot less frequently employed.
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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。
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激光晶体由发光中心和基质晶体两部分组成。大部分激光晶体的发光中心由激活离子构成，激活离子部分取代基质晶体中的阳离子形成掺杂型激光晶体。激活离子成为基质晶体组分的一部分时，则构成自激活激光晶体。
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。
亚稳态寿命也起着重要作用。较长的寿命允许更多的储能和实现粒子数反转的更高潜力，这对激光动作至关重要。
A handful of laser crystal components happen to be shown where some saturable absorber content is included for passive Q switching of a laser.
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。
All those surfaces which might be handed with the laser beam are Typically possibly oriented at Brewster's angle or have an anti-reflection read more coating.
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 expansion optical performance uncommon earth ions transition group ions
The medium should have a high transparency (very low absorption and scattering) during the wavelength regions of pump and laser radiation, and excellent optical homogeneity. To some extent, this relies on the quality of the fabric, determined by information on the fabrication method.
With that concept, just one does not have to have an extra saturable absorber crystal, to make sure that 1 may possibly make additional compact Q-switched laser setups with lower inner parasitic losses. Nonetheless, unwelcome Unintended effects might also take place, which include obtaining undesired valence states of the included ions or 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。