The Greatest Guide To Laser Crystal
The Greatest Guide To Laser Crystal
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The most typical laser-Energetic scarce earth ions and host media along with some standard emission wavelengths are shown in the following desk:
These ions enable the crystal to amplify light at the laser wavelength via stimulated emission, when energy is supplied into the crystal via absorption of pump light (�?optical pumping
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Which geometry, dopant and doping focus with the gain medium are most advantageous depend on many factors. The offered pump supply (kind of laser diode or lamp) as well as the envisaged pumping arrangement are crucial aspects, but the material alone also has some impact. As an example, titanium–sapphire lasers should be pumped with superior intensities, for which the shape of the transversely cooled rod, operated with comparatively smaller pump and laser beam diameter, is more proper than e.
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活性离子在激光晶体内发生的能量跃迁对激光操作至关重要。大多数激光操作都是通过四能级系统原理进行的，确保连续操作并防止浪费的非辐射衰变。
The maximum attainable doping focus can count strongly on the host materials click here and its fabrication strategy.
The host crystal is way more than just a method to fix the laser-active ions at selected positions in Area. A variety of Qualities with the host materials are crucial:
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It is clear that distinctive apps cause really various specifications on laser attain media. This is why, a broad vary of various crystals are employed, and creating the proper choice is important for setting up lasers with optimum general performance.
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The medium ought to have a significant transparency (very low absorption and scattering) while in the wavelength locations of pump and laser radiation, and very good optical homogeneity. To some extent, this is determined by the quality of the material, based on details with the fabrication course of action.
It may be oriented for around perpendicular incidence with the laser beam, or at Brewster's angle. It might be fixed in certain stable mount which also acts for a heat sink. Larger sized crystals are usually used for side pumping e.g. with higher-energy diode bars.
人造红宝石激光晶体是首次实现激光输出的材料。可用焰熔法、提拉法或助熔剂法生产单晶。用提拉法容易获得大尺寸优质晶体。