What Does Laser Crystal Mean?
What Does Laser Crystal Mean?
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Laser modeling and simulation can be utilized to reliably figure out the the best possible crystal Proportions, doping density And maybe values of more parameters.
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。
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions in addition to the higher-state lifetime.
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For quasi-a few-stage laser get media or simply 3-stage gain media, a person often needs to Restrict the size to a value which happens to be way too small for effective pump absorption, as reabsorption effects would otherwise spoil the performance. For aspect pumping, added concerns occur into Perform; besides successful pump absorption, it is vital to acquire an appropriate spatial condition of the obtain profile.
g. a thin disk. As A different case in point, Q-switched lasers arrive at a higher populace density during the higher laser level and are consequently a lot more sensitive to quenching outcomes and Electricity transfer procedures; hence, a lower doping density is often suitable for these equipment. For top-electric power lasers, decrease doping densities in many cases are accustomed to limit the density of heat technology, While slim-disk lasers perform most effective with remarkably doped crystals. Quite a few laser solutions will not get to the whole effectiveness probable due to the fact this kind of details haven't been correctly labored out.
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Moreover, some overall flexibility is missing in experiments if one particular are not able to try out absorbers with various thickness or doping focus, one example is, with no exchanging the laser crystal by itself.
These here ions permit the crystal to amplify light with the laser wavelength by way of stimulated emission, when energy is provided to the crystal by means of absorption of pump light (�?optical pumping
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These tables include only the commonest host crystals; lots of Many others exist, which happen to be fewer routinely made use of.
The most typical laser-active unusual earth ions and host media together with some normal emission wavelengths are proven in the next desk:
A few laser crystal products happen to be demonstrated exactly where some saturable absorber product is included for passive Q switching of a laser.
For various causes, composite crystals have gotten well-known. These Have a very spatially various chemical composition and may be created with special styles.
There exists a wide array of crystalline media, that may be grouped in accordance to important atomic constituents and crystalline buildings. Some critical groups of crystals are:
With that concept, a person isn't going to will need yet another saturable absorber crystal, to make sure that a single could make a lot more compact Q-switched laser setups with reduce inside parasitic losses. Nonetheless, unwanted Unintended effects can also come about, like getting undesirable valence states with the associated ions or Strength transfers.
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Laser crystals are optical crystals �?typically one crystals (monocrystalline optical elements) �?which happen to be utilised as obtain media for solid-point out lasers. Typically, They may be doped with possibly trivalent unusual earth ions or transition steel ions.
激光晶体（laser crystal），可将外界提供的能量通过光学谐振腔转化为在空间和时间上相干的具有高度平行性和单色性激光的晶体材料。是晶体激光器的工作物质。