About Laser Crystal
About Laser Crystal
Blog Article
The most common laser-active unusual earth ions and host media together with some normal emission wavelengths are proven in the following desk:
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为了使激光器有效运作，需要有效管理运行过程中产生的热量。具有良好热导率的激光晶体可以更有效地散热，防止热透镜效应或断裂。
Moreover, some adaptability is missing in experiments if one can't try out absorbers with different thickness or doping concentration, as an example, with no exchanging the laser crystal by itself.
Which geometry, dopant and doping focus of your attain medium are most useful count on various components. The readily available pump supply (type of laser diode or lamp) and the envisaged pumping arrangement are crucial factors, but the fabric by itself also has some influence. Such as, titanium–sapphire lasers should be pumped with large intensities, for which the here form of the transversely cooled rod, operated with fairly compact pump and laser beam diameter, is much more appropriate than e.
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A higher surface area high-quality is obviously critical. Requirements of area flatness are often a lot better than . This will help to stop both of those scattering losses and wavefront distortions that may degrade the laser's beam quality. In addition, scratch and dig specifications
The maximum doable doping concentration can rely strongly over the host content and its fabrication method.
The host crystal is far more than simply a method to repair the laser-active ions at particular positions in Area. Numerous Homes with the host product are crucial:
热膨胀和收缩系数对确定激光晶体的热透镜特性至关重要。最小化热透镜效应对于在广泛的操作温度范围内保持光束质量至关重要。
It is clear that different applications result in incredibly distinctive requirements on laser gain media. For this reason, a wide vary of various crystals are applied, and building the appropriate decision is essential for setting up lasers with optimum overall performance.
材料 激光晶体 晶体生长 光学性能 稀土离子 过渡族离子 materials laser crystal crystal progress optical effectiveness scarce earth ions changeover team ions
The medium must have a higher transparency (small absorption and scattering) from the wavelength regions of pump and laser radiation, and fantastic optical homogeneity. To some extent, this is dependent upon the quality of the material, based on particulars of your fabrication method.
There is an array of crystalline media, which may be grouped according to special atomic constituents and crystalline constructions. Some significant teams of crystals are:
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。