The 5-Second Trick For Laser Crystal
The 5-Second Trick For Laser Crystal
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Laser modeling and simulation can be used to reliably identify the optimum crystal dimensions, doping density And maybe values of supplemental parameters.
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。
The host crystal is much more than just a method to repair the laser-Energetic ions at particular positions in House. Quite a few Homes with the host materials are crucial:
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For quasi-three-level laser attain media or even a few-level acquire media, a single normally must Restrict the length to a value which is much too brief for productive pump absorption, as reabsorption effects would otherwise spoil the performance. For aspect pumping, more criteria arrive into Perform; Aside from economical pump absorption, it can be crucial to obtain a suitable spatial condition from the gain profile.
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A significant injury threshold with regard to pulse fluence or peak depth is usually vital for high-Power amplifiers.
These ions enable the crystal to amplify mild in the laser wavelength by means of stimulated emission, when Electrical power is provided to your crystal through absorption of pump gentle (�?optical pumping
Which geometry, dopant and doping concentration with the obtain medium are most advantageous count on many aspects. The readily available pump source (type of laser diode or lamp) and the envisaged pumping arrangement are very important variables, but the material by itself also has some affect. For instance, titanium–sapphire lasers ought more info to be pumped with significant intensities, for which the shape of the transversely cooled rod, operated with reasonably small pump and laser beam diameter, is a lot more proper than e.
It could be oriented for near perpendicular incidence of the laser beam, or at Brewster's angle. It could be mounted in certain solid mount which also functions like a warmth sink. Larger sized crystals are frequently used for facet pumping e.g. with significant-electrical power diode bars.
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Those surfaces that happen to be passed via the laser beam are normally either oriented at Brewster's angle or have an anti-reflection coating.
For numerous explanations, composite crystals are becoming well known. These have a spatially various chemical composition and will be produced with Specific styles.
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。
With that concept, a single will not need an additional saturable absorber crystal, to make sure that just one may perhaps make extra compact Q-switched laser setups with lessen inside parasitic losses. Even so, undesirable side effects can also arise, which include getting unwelcome valence states from the concerned ions or Strength transfers.
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It is obvious that distinct programs lead to incredibly distinct demands on laser acquire media. For this reason, a broad array of different crystals are utilized, and earning the ideal alternative is essential for developing lasers with ideal overall performance.
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。