The Nonlinear Crystal Diaries
The Nonlinear Crystal Diaries
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Laser modeling and simulation can be utilized to reliably identify the ideal crystal dimensions, doping density And perhaps values of extra 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 crystal is way more than simply a means to fix the laser-active ions at specific positions in Room. Quite a few Qualities in the host substance are very important:
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。
For quasi-a few-stage laser obtain media or perhaps a few-stage obtain media, 1 often really should limit the length to a worth that's as well short for successful pump absorption, as reabsorption results would in any other case spoil the effectiveness. For aspect pumping, additional things to consider come into Participate in; Aside from efficient pump absorption, it can be crucial to obtain an acceptable spatial shape with the obtain profile.
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Furthermore, some flexibility is missing in experiments if just one can not Check out absorbers with distinct thickness or doping focus, by way of example, with out exchanging the laser crystal alone.
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：
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It may be oriented for around perpendicular incidence on the laser beam, or at Brewster's angle. It could be fastened in certain good mount which also functions as a heat sink. Bigger crystals usually are employed for aspect pumping e.g. with significant-electric power diode bars.
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A few laser crystal resources have been demonstrated where by some saturable absorber materials is included for passive Q switching of the laser.
For different explanations, composite crystals have gotten popular. These Possess a spatially different chemical composition and will be produced with Exclusive styles.
There exists a variety of crystalline media, that may be grouped in accordance to big atomic constituents and crystalline buildings. Some important groups of crystals are:
With that concept, one particular won't will need yet another saturable absorber crystal, to make sure that a person may make more compact Q-switched laser setups with lower interior parasitic losses. However, unwelcome Unwanted side effects might also occur, such as getting undesired valence states on the concerned ions or Power transfers.
GWU delivers all frequent laser crystals (Nd:YVO4, Nd:YAG, Yb:YAG etc.) which has check here a wide selection of specifications. Other than the very well-proven materials, ground breaking crystals with fantastic Qualities like Yb:CALGO can open up new horizons for demanding laser programs. Regardless of whether specific pieces for R & D uses are needed or Price tag-productive quantities in tiny, medium or significant batches with in-time shipping and delivery for the generation line are required: GWU’s committed service helps you to locate the very best Main factors to your software.
It is obvious that diverse purposes lead to extremely diverse necessities on laser gain media. Because of this, a broad selection of various crystals are applied, and earning the right option is essential for constructing lasers with optimum functionality.
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。