Nonlinear Crystal - An Overview
Nonlinear Crystal - An Overview
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Various crystalline supplies are really distinct concerning their hardness and various properties, which determine with which methods And just how easily they may be Slash and polished with good quality.
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 simply a way to repair the laser-Energetic ions at specific positions in Area. Numerous properties in the host product are crucial:
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For quasi-a few-amount laser get media or even a few-amount gain media, one usually should limit the size to a worth which is way too quick for efficient pump absorption, as reabsorption outcomes would normally spoil the functionality. For aspect pumping, added criteria arrive into Perform; In addition to effective pump absorption, it is necessary to get an appropriate spatial condition of the obtain profile.
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A higher destruction threshold with regards to pulse fluence or peak intensity is often crucial for prime-Electrical power amplifiers.
These ions allow the crystal to amplify light-weight within the laser wavelength by means of stimulated emission, when Electricity is equipped into the crystal through absorption of pump light (�?optical pumping
Which geometry, dopant and doping concentration with the gain medium are most advantageous depend on various things. The available pump source (style of laser diode or lamp) and the envisaged pumping arrangement are essential things, but the material by itself also has some affect. For example, titanium–sapphire lasers must be pumped with superior intensities, for which the form of a transversely cooled rod, operated with relatively compact pump and laser beam diameter, is a lot more appropriate than e.
It may be oriented for close to perpendicular incidence from the laser beam, or at Brewster's angle. It might be fastened in certain sound mount which also functions to be a warmth sink. Larger crystals are frequently employed for side pumping e.g. with high-power diode bars.
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A handful of laser crystal components are shown exactly where some saturable absorber content is integrated for passive Q switching of the laser.
For a variety of good reasons, composite crystals have gotten common. These Use a spatially various chemical composition and may be created with Unique shapes.
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 isn't going to require an extra saturable absorber crystal, so that a person might make far more compact Q-switched laser setups with lower inner parasitic losses. Nevertheless, unwelcome Unwanted side effects may also happen, including acquiring undesired valence states on the associated ions or Strength transfers.
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Laser crystals are optical crystals �?commonly one crystals (monocrystalline optical products) �?that are made use of as gain media for solid-state lasers. In most cases, They're doped with either trivalent scarce earth ions or changeover steel ions.
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。