5 Easy Facts About Laser Crystal Described
5 Easy Facts About Laser Crystal Described
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The most typical laser-Energetic uncommon earth ions and host media together with some normal emission wavelengths are demonstrated in the next table:
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。
Laser crystals are optical crystals �?usually single crystals (monocrystalline optical products) �?that are made use of as achieve media for solid-condition lasers. Generally, They're doped with possibly trivalent rare earth ions or transition 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。
Which geometry, dopant and doping focus with the attain medium are most useful rely upon various components. The readily available pump supply (kind of laser diode or lamp) plus the envisaged pumping arrangement are important variables, but the material alone also has some affect. For example, titanium–sapphire lasers need to be pumped with substantial intensities, for which the shape of a transversely cooled rod, operated with comparatively smaller pump and laser beam diameter, is more correct than e.
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A high floor quality is naturally vital. Specifications of surface area flatness in many cases are much better than . This assists to stop both of those scattering losses and wavefront distortions that may degrade the laser's beam quality. In addition, scratch and dig specifications
g. a skinny disk. As An additional illustration, Q-switched lasers reach a better inhabitants density within the upper laser stage and they are consequently much more sensitive to quenching outcomes and Electricity transfer procedures; consequently, a decrease doping density is often appropriate for these units. For high-electrical power lasers, decrease doping densities in many cases are utilized to Restrict the density of heat generation, Though skinny-disk lasers function very best with extremely doped crystals. A lot of laser solutions tend not to reach the full functionality potential because these types of facts have not been correctly labored out.
A couple of laser crystal products are already demonstrated in which some saturable absorber content is incorporated for passive Q switching of a laser.
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It is clear that distinctive applications result in really diverse necessities on laser attain media. Due to this, a wide selection of different crystals are utilized, and creating the right preference is important for constructing lasers with the best possible functionality.
材料 激光晶体 晶体生长 光学性能 稀土离子 过渡族离子 products laser crystal crystal development optical overall performance rare earth ions changeover team ions
The medium must have a large transparency (small absorption and scattering) inside the wavelength regions of pump and laser radiation, and excellent optical homogeneity. To some extent, this will depend on the standard of the material, determined by facts of your fabrication approach.
With That idea, just one does not need yet another saturable absorber crystal, to make sure that just one may possibly make more compact Q-switched laser setups with lessen inside parasitic losses. Nevertheless, unwelcome Unintended effects may happen, which include obtaining undesired valence states from the here included ions or energy transfers.
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