Detailed Notes on Laser Crystal
Detailed Notes on Laser Crystal
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The most typical laser-active exceptional earth ions and host media together with some typical emission wavelengths are shown in the next table:
激光晶体的极化性能可能会影响输出激光束的质量和特性。有些激光晶体产生线性偏振光，这对某些应用可能有益。
激光晶体是固态激光器的核心。它们是光放大发生的媒介，产生激光束。在这篇全面指南中，我们深入探讨激光晶体的世界。
Furthermore, some adaptability is dropped in experiments if just one are not able to Check out absorbers with various thickness or doping focus, by way of example, devoid of exchanging the laser crystal itself.
Which geometry, dopant and doping concentration of the attain medium are most advantageous depend upon a number of things. The accessible pump supply (kind of laser diode or lamp) plus the envisaged pumping arrangement are important things, but the material alone also has some affect. As an example, titanium–sapphire lasers need to be pumped with superior intensities, for which the form of a transversely cooled rod, operated with comparatively small pump and laser beam diameter, is much more appropriate than e.
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。
A higher surface quality is needless to say critical. Specifications of area flatness will often be a lot better than . This assists to avoid both of those scattering losses and wavefront distortions which often can degrade the laser's beam good quality. Additionally, scratch and dig requirements
亚稳态寿命也起着重要作用。较长的寿命允许更多的储能和实现粒子数反转的更高潜力，这对激光动作至关重要。
Laser modeling and simulation may be used to reliably decide the the best possible crystal Proportions, doping density and possibly values of supplemental parameters.
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For quasi-three-degree laser achieve media or simply three-level obtain media, just one normally needs to limit the length to a value which can be far too small for economical pump absorption, as reabsorption effects would or else spoil the efficiency. For aspect pumping, further issues appear into Engage in; Other than successful pump absorption, it is important to acquire an appropriate spatial condition with the gain profile.
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It could be oriented for near perpendicular incidence in the laser beam, or at Brewster's angle. It could be preset in some sound mount which also acts for a warmth sink. Larger crystals are often utilized for side pumping e.g. with large-electric power diode bars.
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。