Details, Fiction and Laser Crystal

Details, Fiction and Laser Crystal

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The most typical laser-Energetic unusual earth ions and host media along with some regular emission wavelengths are revealed in the subsequent desk:

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Also, some overall flexibility is dropped in experiments if 1 cannot Check out absorbers with distinct thickness or doping focus, one example is, with no exchanging the laser crystal itself.

The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions as well as the higher-state lifetime.

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。

The most probable doping concentration can count strongly over the host content and its fabrication approach.

The host crystal is a great deal more than just a means to fix the laser-active ions at selected positions in House. Several Houses of your host content 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-3-amount laser gain media and even a few-amount gain media, 1 typically ought to Restrict the duration to a worth which is as well quick for productive pump absorption, as reabsorption outcomes would normally spoil the effectiveness. For facet pumping, supplemental considerations come into play; besides efficient pump click here absorption, it is important to obtain an acceptable spatial condition on the achieve profile.

主体材料中活性离子掺杂物的数量是关键因素。它影响了激光的效率和性能。过低的浓度可能导致低输出，过高的浓度可能导致消光效应，降低晶体的效率。

For various causes, composite crystals are becoming well-known. These Have a very spatially different chemical composition and will be built with special shapes.

It could be oriented for in the vicinity of perpendicular incidence from the laser beam, or at Brewster's angle. It might be fixed in some sound mount which also acts for a warmth sink. Larger sized crystals are often utilized for aspect pumping e.g. with substantial-ability 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。