Considerations To Know About Laser Crystal

Considerations To Know About Laser Crystal

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The commonest laser-Energetic uncommon earth ions and host media together with some standard emission wavelengths are demonstrated in the next 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。

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Which geometry, dopant and doping concentration from the gain medium are most useful depend upon numerous factors. The out there pump supply (kind of laser diode or lamp) as well as envisaged pumping arrangement are very important elements, but the material alone also has some influence. Such as, titanium–sapphire lasers must be pumped with high intensities, for which the form of the transversely cooled rod, operated with fairly smaller pump and laser beam diameter, is more proper than e.

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激光晶体的损伤阈值与其能承受的最大光强有关，而不会遭受物理或结构损伤。高损伤阈值对于确保高功率激光应用的耐久性和长寿命至关重要。

g. a thin disk. As One more case in point, Q-switched lasers reach an increased inhabitants density in the upper laser stage and so are hence more delicate to quenching consequences and Electrical power transfer procedures; hence, a lessen doping density is commonly suitable for these products. For prime-electrical power lasers, reduced doping densities are frequently utilized to Restrict the density of heat generation, although thin-disk lasers work most effective with remarkably doped crystals. Several laser goods never reach the full general performance likely simply because these types of specifics haven't been correctly labored out.

The host crystal is considerably more than just a way to fix the laser-Energetic ions at selected positions in House. Many properties from the host materials are essential:

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People surfaces which are handed because of the laser beam are Usually possibly oriented at Brewster's angle or have an anti-reflection coating.

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。

The medium ought to have a large transparency (lower absorption and scattering) within the wavelength areas of pump and laser radiation, and great optical homogeneity. To some extent, this relies on the quality of the material, based on details on the fabrication system.

With That idea, a single doesn't require yet another saturable absorber crystal, to make sure that just one check here could make much more compact Q-switched laser setups with reduced internal parasitic losses. Having said that, undesirable Negative effects could also take place, such as acquiring unwelcome valence states of the associated 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。