Helping The others Realize The Advantages Of Laser Crystal
Helping The others Realize The Advantages Of Laser Crystal
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Laser crystals are optical crystals �?typically solitary crystals (monocrystalline optical elements) �?which happen to be used as achieve media for strong-condition lasers. Usually, they are doped with either trivalent exceptional earth ions or changeover metallic 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。
The host medium influences strongly the wavelength, bandwidth and transition cross-sections of pump and laser transitions and also the higher-point out 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。
亚稳态寿命也起着重要作用。较长的寿命允许更多的储能和实现粒子数反转的更高潜力，这对激光动作至关重要。
Laser modeling and simulation may be used to reliably determine the optimum crystal Proportions, doping density And maybe values of added parameters.
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-a few-amount laser attain media or maybe 3-degree acquire media, one often really should Restrict the length to a worth and that is far too short for effective pump absorption, as reabsorption results would or else spoil the overall performance. For aspect pumping, additional things to consider come into Enjoy; In addition to successful pump absorption, it is vital to obtain an appropriate spatial condition from the achieve profile.
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The medium must have a higher transparency (reduced absorption and scattering) in the wavelength areas of pump and laser radiation, and excellent optical homogeneity. To some extent, this is determined by the quality of the fabric, determined by particulars of the fabrication system.
With that concept, 1 doesn't need an additional saturable absorber crystal, so that one may possibly make a lot more compact Q-switched laser setups with lower internal parasitic losses. Having said that, unwelcome Unintended more info effects may additionally take place, such as getting unwanted valence states of the involved ions or Electrical power transfers.
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。