Detailed Notes on Laser Crystal
Detailed Notes on Laser Crystal
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The commonest laser-active scarce earth ions and host media together with some regular emission wavelengths are proven in the subsequent desk:
These ions allow the crystal to amplify mild at the laser wavelength by using stimulated emission, when Electricity is supplied into the crystal by means of absorption of pump light (�?optical pumping
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Which geometry, dopant and doping concentration from the acquire medium are most advantageous depend on several factors. The available pump resource (style of laser diode or lamp) plus the envisaged pumping arrangement are essential elements, but the fabric by itself also has some influence. For instance, titanium–sapphire lasers have to be pumped with high intensities, for which the form of the transversely cooled rod, operated with comparatively little pump and laser beam diameter, is a lot more acceptable than e.
激光晶体由发光中心和基质晶体两部分组成。大部分激光晶体的发光中心由激活离子构成，激活离子部分取代基质晶体中的阳离子形成掺杂型激光晶体。激活离子成为基质晶体组分的一部分时，则构成自激活激光晶体。
Naturally, it is rather appealing that a offered crystal quality is generated consistently, Though various laser models can have click here another sensitivity to substance parameters.
The most attainable doping focus can depend strongly over the host content and its fabrication process.
The host crystal is a great deal more than simply a means to repair the laser-Lively ions at certain positions in Area. Several Attributes of the host product are important:
激光晶体的核心由固态晶体材料组成，通常掺杂了某些能够通过受激发射产生光放大的离子。这些离子的性质对激光晶体的性能起决定作用。
Those surfaces that happen to be passed because of the laser beam are Typically either oriented at Brewster's angle or have an anti-reflection coating.
材料 激光晶体 晶体生长 光学性能 稀土离子 过渡族离子 resources laser crystal crystal development optical functionality scarce earth ions changeover team ions
For numerous factors, composite crystals are getting to be preferred. These Have got a spatially varying chemical composition and might be produced with Distinctive designs.
With That idea, a person would not have to have yet another saturable absorber crystal, making sure that one particular could make a lot more compact Q-switched laser setups with reduced internal parasitic losses. Having said that, undesired Uncomfortable side effects could also occur, such as getting undesired valence states of the included ions or energy transfers.
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