The Basic Principles Of Nonlinear Crystal
The Basic Principles Of Nonlinear Crystal
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Laser modeling and simulation may be used to reliably figure out the optimum crystal Proportions, doping density And perhaps values of additional 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-point out life span.
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。
The most achievable doping focus can depend strongly to the host material and its fabrication strategy.
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A substantial damage threshold with regard to pulse fluence or peak intensity might be important for top-energy amplifiers.
作为工业上使用较多的都是高掺钇铝石榴石，也就是说掺入不同的元素来达到不同的效果；作为工业激光，关注以下性能：
Which geometry, dopant and doping focus from the achieve medium are most useful depend on many things. The accessible pump supply (style of laser diode or lamp) and the envisaged pumping arrangement are essential variables, but the fabric alone also has some influence. For instance, titanium–sapphire lasers must be pumped with significant intensities, for which the shape of the transversely cooled rod, operated with fairly tiny pump and laser beam diameter, is much more ideal than e.
These tables contain only the commonest host crystals; quite a few Many others exist, which happen to be a lot less commonly utilised.
The most typical laser-active rare earth ions and host media along with some normal emission wavelengths are proven in the following desk:
A read more couple of laser crystal elements happen to be shown where some saturable absorber content is included for passive Q switching of a laser.
Obviously, it's very attractive that a offered crystal top quality is generated consistently, Though diverse laser models might have a different sensitivity to material parameters.
There is certainly a wide array of crystalline media, which may be grouped in accordance to special atomic constituents and crystalline constructions. Some significant teams of crystals are:
With that concept, 1 doesn't want an extra saturable absorber crystal, to ensure one particular may possibly make far more compact Q-switched laser setups with decrease inner parasitic losses. Even so, undesirable Uncomfortable side effects may arise, for example obtaining unwanted valence states of your associated ions or energy transfers.
GWU presents all widespread laser crystals (Nd:YVO4, Nd:YAG, Yb:YAG and so on.) having a wide assortment of specs. Besides the perfectly-proven supplies, ground breaking crystals with remarkable Qualities like Yb:CALGO can open up new horizons for demanding laser programs. No matter irrespective of whether specific pieces for R & D uses are needed or Charge-effective quantities in tiny, medium or significant batches with in-time shipping and delivery with the manufacturing line are desired: GWU’s devoted assistance helps to discover the most effective core parts for your application.
It is clear that different programs cause pretty different specifications on laser achieve media. This is why, a wide range of different crystals are utilized, and producing the best alternative is important for developing lasers with the best possible general performance.
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。