A Review Of Laser Crystal

A Review Of Laser Crystal

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The most typical laser-active rare earth ions and host media together with some normal emission wavelengths are revealed in the subsequent table:

激光晶体的极化性能可能会影响输出激光束的质量和特性。有些激光晶体产生线性偏振光，这对某些应用可能有益。

Laser crystals are optical crystals �?generally single crystals (monocrystalline optical resources) �?that are applied as acquire media for good-condition lasers. Generally, These are doped with either trivalent uncommon earth ions or changeover metallic ions.

Also, some flexibility is misplaced in experiments if a single are unable to Check out absorbers with distinctive thickness or doping focus, for example, with out exchanging the laser crystal by itself.

Which geometry, dopant and doping concentration on the achieve medium are most beneficial rely on numerous elements. The accessible pump source (variety of laser diode or lamp) as well as envisaged pumping arrangement are very important variables, but the material alone also has some influence. For example, titanium–sapphire lasers need to be pumped with high intensities, for which the shape of a transversely cooled rod, operated with rather modest pump and laser beam diameter, is more ideal 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。

A significant surface high quality is obviously vital. Requirements of area flatness tend to be better than . This can help to prevent the two scattering losses and wavefront distortions which could degrade the laser's beam excellent. Also, scratch and dig requirements

The maximum attainable doping concentration can rely strongly on the host content and its fabrication method.

激光晶体的效率在很大程度上依赖于某些属性，这些属性不仅限于其基本组成。这些特性决定了产生的激光光束的质量和随后的应用。

量子效率是发射光子数量与吸收光子数量的比率。高量子效率表明更大部分吸收能量被转化为激光光束，有助于提高激光的整体效率。

For quasi-three-amount laser achieve media and even a few-degree gain media, a person typically must Restrict the duration to a value which happens to be way too short for productive pump absorption, as reabsorption consequences would in any other case spoil the performance. For side pumping, added criteria arrive into Participate in; In addition to effective pump absorption, it is necessary to get an appropriate spatial form from the obtain profile.

Unique crystalline components are very diverse concerning their hardness together with other properties, which establish with which methods And the way quickly they may be Reduce and polished with high quality.

For many more info good reasons, composite crystals have gotten well-known. These have a spatially different chemical composition and might be produced with special styles.

There's a wide array of crystalline media, which may be grouped in accordance to special atomic constituents and crystalline constructions. Some significant groups of crystals are:

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