The smart Trick of Laser Crystal That No One is Discussing
The smart Trick of Laser Crystal That No One is Discussing
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The most typical laser-active uncommon earth ions and host media together with some common emission wavelengths are revealed in the subsequent table:
These ions permit the crystal to amplify gentle with the laser wavelength through stimulated emission, when Vitality is supplied to the crystal by using absorption of pump gentle (�?optical pumping
Laser crystals are optical crystals �?typically one crystals (monocrystalline optical supplies) �?which are applied as acquire media for reliable-point out lasers. Most often, They can be doped with possibly trivalent rare 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。
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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。
A large floor high quality is naturally vital. Specifications of surface area flatness are often much better than . This allows to avoid each scattering losses and wavefront distortions which may degrade the laser's beam excellent. Also, scratch and dig requirements
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。
A couple of laser crystal products are already shown where some saturable absorber content is included for passive Q switching of the laser.
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-three-amount laser achieve media or perhaps a few-degree attain media, one particular frequently really should limit the size to a value which happens to be way too short for effective pump absorption, as reabsorption outcomes would or else spoil the effectiveness. For side pumping, further considerations occur into Perform; Moreover effective pump absorption, it can get more info be crucial to acquire an acceptable spatial condition of the acquire profile.
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The medium should have a significant transparency (minimal absorption and scattering) within the wavelength locations of pump and laser radiation, and excellent optical homogeneity. To some extent, this depends on the caliber of the fabric, determined by facts from the fabrication system.
With That idea, one particular will not want an extra saturable absorber crystal, to ensure that just one may make extra compact Q-switched laser setups with lessen inside parasitic losses. Even so, unwelcome Unintended effects may additionally come about, for example acquiring unwanted valence states with the included 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。