5 Essential Elements For Laser Crystal

5 Essential Elements For Laser Crystal

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The most typical laser-active uncommon earth ions and host media along with some typical emission wavelengths are proven in the next table:

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Laser crystals are optical crystals �?typically single crystals (monocrystalline optical products) �?that happen to be utilised as get media for solid-state lasers. Generally, They're doped with either trivalent unusual earth ions or changeover metallic ions.

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 transition cross-sections of pump and laser transitions in addition to the higher-condition life time.

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A higher surface area quality is certainly critical. Requirements of surface area flatness are often a lot better than . This helps to stop both scattering losses and wavefront distortions which may degrade the laser's beam high-quality. Additionally, scratch and dig technical specs

The maximum probable doping concentration can depend strongly over the host material and its fabrication process.

A couple of laser crystal supplies are already demonstrated the place some saturable absorber materials is incorporated for passive Q switching of the laser.

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For quasi-3-degree laser obtain media or maybe three-amount attain media, just one often should Restrict the duration to a value that's much too small for successful pump absorption, as reabsorption consequences would normally spoil the general performance. For aspect pumping, supplemental factors occur into Engage in; Aside from productive more info pump absorption, it is crucial to acquire an appropriate spatial form with the get 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。

The medium ought to have a higher transparency (low absorption and scattering) inside the wavelength regions of pump and laser radiation, and good optical homogeneity. To some extent, this depends on the quality of the material, determined by information in the fabrication method.

It might be oriented for close to perpendicular incidence in the laser beam, or at Brewster's angle. It may be fastened in some good mount which also acts for a warmth sink. Much larger crystals usually are useful for side pumping e.g. with high-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。