Laser Crystal Fundamentals Explained
Laser Crystal Fundamentals Explained
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Laser modeling and simulation can be used to reliably identify the ideal crystal dimensions, doping density And maybe values of added parameters.
The medium must have a superior transparency (minimal absorption and scattering) from the wavelength regions of pump and laser radiation, and excellent optical homogeneity. To some extent, this relies on the quality of the material, based on aspects from the fabrication approach.
The host crystal is a great deal more than simply a method to fix the laser-active ions at specific positions in Place. Many properties from the host materials are essential:
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 maximum probable doping concentration can count strongly around the host substance and its fabrication technique.
g. a skinny disk. As An additional illustration, Q-switched lasers get to a higher populace density in the upper laser stage and are for that reason extra sensitive to quenching outcomes and Electrical power transfer processes; as a result, a decreased doping density is often appropriate for these units. For top-power lasers, reduced doping densities in many cases are utilized to Restrict the density of heat generation, Despite the fact that slim-disk lasers do the job very best with very doped crystals. A lot of laser products and solutions do not reach the complete efficiency likely mainly because these types of details have not been properly labored out.
GWU-Lasertechnik has a lot more than thirty a long time of expertise in distributing laser crystals. Select GWU to reap the benefits of our wide awareness and in-area working experience!
A large hurt threshold with regards to pulse fluence or peak depth may be vital for high-Electricity 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 with the obtain medium are most advantageous depend upon quite a few elements. The offered pump resource (variety of laser diode or lamp) along with the envisaged pumping arrangement are crucial variables, but the fabric alone also has some impact. As an example, titanium–sapphire lasers need to be pumped with large intensities, for which the form of a transversely cooled rod, operated with relatively little pump and laser beam diameter, is much more proper than e.
It might be oriented for around perpendicular incidence on the laser beam, or at Brewster's angle. It can be set in some stable mount which also acts to be a heat sink. Bigger crystals are frequently used for side pumping e.g. with significant-electrical power diode bars.
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A few laser crystal elements happen to be demonstrated where by some saturable absorber material is incorporated for passive Q switching of the laser.
For several motives, composite crystals have gotten preferred. These have a spatially varying chemical composition and may be created with Distinctive styles.
There is certainly a wide array of crystalline media, which may be grouped according to special atomic constituents and crystalline buildings. Some critical teams of crystals are:
蓝宝�?柱面�?球罩 偏振�?棱镜 红外光学元件 反射�?光学窗口 非球面镜 波片 分光�?制造能力
GWU gives all common laser crystals (Nd:YVO4, Nd:YAG, Yb:YAG etcetera.) by using a broad a number of specs. Besides the very well-founded materials, progressive crystals with exceptional Homes like Yb:CALGO can open new horizons for demanding laser applications. Irrespective of no matter if specific pieces for R & D purposes are required or Price tag-economical quantities in compact, medium or big batches with in-time supply for your output line are wanted: GWU’s devoted support helps to locate the very best Main elements for your application.
Laser crystals are optical crystals �?usually one crystals (monocrystalline optical components) �?that are used as gain media for sound-point out lasers. Normally, These are doped with either trivalent exceptional earth ions or transition 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。