About Laser Crystal
About Laser Crystal
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These tables contain only the commonest host crystals; several Other people exist, that are considerably less frequently utilized.
These ions enable the crystal to amplify mild with the laser wavelength by way of stimulated emission, when Electricity is equipped into the crystal via absorption of pump light (�?optical pumping
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The host medium influences strongly the wavelength, bandwidth and transition cross-sections of pump and laser transitions and in addition the upper-state lifetime.
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A high surface area good quality is needless to say significant. Specs of surface flatness are frequently better than . This assists to prevent the two scattering losses and wavefront distortions which could degrade the laser's beam top quality. Furthermore, scratch and dig specifications
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。
The host crystal is a great deal more than just a way to repair the laser-active ions at sure positions in Area. Many Qualities with the host click here substance are important:
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。
For quasi-3-degree laser obtain media and even three-amount obtain media, one particular typically should limit the duration to a price which can be as well short for economical pump absorption, as reabsorption outcomes would or else spoil the efficiency. For facet pumping, added concerns occur into Engage in; In addition to productive pump absorption, it's important to get an acceptable spatial shape on the gain profile.
主体材料中活性离子掺杂物的数量是关键因素。它影响了激光的效率和性能。过低的浓度可能导致低输出，过高的浓度可能导致消光效应，降低晶体的效率。
For numerous explanations, composite crystals have gotten preferred. These Possess a spatially varying chemical composition and can be made with Unique designs.
It could be oriented for in close proximity to perpendicular incidence of the laser beam, or at Brewster's angle. It might be preset in certain solid mount which also functions being a heat sink. Larger sized crystals are frequently employed for aspect pumping e.g. with significant-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。