The Basic Principles Of Laser Crystal
The Basic Principles Of Laser Crystal
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The most typical laser-Lively scarce earth ions and host media together with some standard emission wavelengths are revealed in the next desk:
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。
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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。
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions and in addition the upper-state life time.
GWU delivers all typical laser crystals (Nd:YVO4, Nd:YAG, Yb:YAG etcetera.) by using a broad range of requirements. Other than the very well-established elements, progressive crystals with excellent properties like Yb:CALGO can open up new horizons for demanding laser applications. No matter irrespective of whether personal items for R & D needs are required or Price-efficient quantities in compact, medium or big batches with in-time supply for that generation line are essential: GWU’s dedicated assistance really helps to find the finest Main factors for your software.
A higher area high quality is needless to say important. Requirements of surface flatness in many cases are a lot better than . This here can help to stop each scattering losses and wavefront distortions which could degrade the laser's beam excellent. Moreover, 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 far more than simply a means to fix the laser-Lively ions at specific positions in House. A variety of properties with the host material are very 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。
All those surfaces which might be handed through the laser beam are Usually possibly oriented at Brewster's angle or have an anti-reflection coating.
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。
The medium ought to have a large transparency (minimal absorption and scattering) from the wavelength areas of pump and laser radiation, and very good optical homogeneity. To some extent, this depends upon the standard of the fabric, based on particulars of your fabrication method.
With That idea, 1 will not will need an extra saturable absorber crystal, so that just one may perhaps make more compact Q-switched laser setups with lessen interior parasitic losses. Nevertheless, unwanted Unwanted effects may additionally arise, for instance acquiring unwanted valence states from the associated ions or Electricity transfers.
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