Indicators on Laser Crystal You Should Know

Indicators on Laser Crystal You Should Know

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Laser modeling and simulation can be employed to reliably decide the optimum crystal dimensions, doping density and possibly 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 way more than simply a means to fix the laser-active ions at particular positions in Room. Quite a few Houses with the host product are crucial:

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。

The utmost probable doping concentration can count strongly around the host substance and its fabrication technique.

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A substantial damage threshold with regard to pulse fluence or peak depth can be significant for prime-Strength amplifiers.

These ions help the crystal to amplify mild on the laser wavelength through stimulated emission, when Strength is supplied on the crystal by using absorption of pump light (�?optical pumping

Which geometry, dopant and doping concentration of the get medium are most useful rely read more on quite a few things. The readily available pump supply (form of laser diode or lamp) and the envisaged pumping arrangement are important components, but the material itself also has some influence. By way of example, titanium–sapphire lasers need to be pumped with superior intensities, for which the form of the transversely cooled rod, operated with rather tiny pump and laser beam diameter, is much more acceptable than e.

These tables include only the commonest host crystals; lots of others exist, that are considerably less regularly applied.

The most common laser-active rare earth ions and host media together with some regular emission wavelengths are shown in the subsequent table:

A few laser crystal supplies have already been shown wherever some saturable absorber product is incorporated for passive Q switching of the laser.

For many factors, composite crystals are becoming well-liked. These Possess a spatially varying chemical composition and will be built with Distinctive designs.

You can find an array of crystalline media, that may be grouped according to important atomic constituents and crystalline buildings. Some essential teams of crystals are:

With That idea, one won't require a further saturable absorber crystal, so that a single may perhaps make more compact Q-switched laser setups with reduced inside parasitic losses. Having said that, unwanted Unwanted side effects can also come about, for instance getting undesired valence states on the concerned ions or Vitality transfers.

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It is obvious that various applications lead to very unique necessities on laser achieve media. Because of this, a wide array of different crystals are made use of, and building the correct option is important for constructing lasers with ideal efficiency.

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。