Laser Crystal - An Overview
Laser Crystal - An Overview
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Distinct crystalline materials are really various relating to their hardness along with other Attributes, which decide with which solutions And the way simply they may be Reduce and polished with high quality.
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 a great deal more than simply a means to fix the laser-Energetic ions at selected positions in House. A number of Qualities on the host substance are crucial:
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For quasi-three-amount laser achieve media and even three-amount achieve media, a single usually must Restrict the size to a value which happens to be way too quick for efficient pump absorption, as reabsorption outcomes would in any other case spoil the overall performance. For facet pumping, added concerns appear into Perform; besides successful pump absorption, it's important to acquire a suitable spatial condition in the attain profile.
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A superior damage threshold regarding pulse fluence or peak depth may be important for high-Vitality amplifiers.
These ions enable the crystal to amplify mild in the laser wavelength via stimulated emission, when energy is here provided towards the crystal by means of absorption of pump light (�?optical pumping
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These tables include only the commonest host crystals; quite a few Other folks exist, that happen to be significantly less frequently used.
The most typical laser-Energetic rare earth ions and host media together with some common emission wavelengths are shown in the next table:
A couple of laser crystal supplies have already been shown exactly where some saturable absorber material is included for passive Q switching of a laser.
For many motives, composite crystals have become popular. These have a spatially varying chemical composition and may be designed with special shapes.
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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GWU gives all popular laser crystals (Nd:YVO4, Nd:YAG, Yb:YAG and so on.) using a wide selection of technical specs. Aside from the very well-established materials, progressive crystals with fantastic Homes like Yb:CALGO can open up new horizons for demanding laser purposes. Irrespective of whether or not specific items for R & D reasons are needed or Price-effective quantities in smaller, medium or substantial batches with in-time supply for the production line are needed: GWU’s focused provider helps to locate the greatest core components for your personal software.
It is obvious that diverse apps lead to pretty distinct specifications on laser gain media. This is why, a wide range of various crystals are utilized, and earning the correct decision 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。