The Definitive Guide to Laser Crystal
The Definitive Guide to Laser Crystal
Blog Article
The commonest laser-Energetic rare earth ions and host media along with some standard emission wavelengths are demonstrated in the following desk:
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。
为了使激光器有效运作，需要有效管理运行过程中产生的热量。具有良好热导率的激光晶体可以更有效地散热，防止热透镜效应或断裂。
Furthermore, some overall flexibility is shed in experiments if one can't try out absorbers with distinct thickness or doping concentration, by way of example, devoid of exchanging the laser crystal alone.
作为工业上使用较多的都是高掺钇铝石榴石，也就是说掺入不同的元素来达到不同的效果；作为工业激光，关注以下性能：
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。
活性离子在激光晶体内发生的能量跃迁对激光操作至关重要。大多数激光操作都是通过四能级系统原理进行的，确保连续操作并防止浪费的非辐射衰变。
亚稳态寿命也起着重要作用。较长的寿命允许更多的储能和实现粒子数反转的更高潜力，这对激光动作至关重要。
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。
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It is clear that distinctive purposes lead to very different specifications on laser gain media. This is why, a wide selection of different crystals are employed, and producing the correct option is important for setting up lasers with optimum performance.
材料 激光晶体 晶体生长 光学性能 稀土离子 过渡族离子 supplies laser crystal crystal progress optical effectiveness exceptional earth ions changeover team ions
In 2017, we created the earth’s biggest Ti∶sapphire crystal (Φ235 mm), which supported the 10 PW laser output of Shanghai Superintense Ultrafast Laser Facility. The development of Yb and Tm doped GdScO3 laser crystals with really large emission spectra drives the event of laser diode pumped ultrafast solid-point out lasers. With the increase in pulse Power, peak electrical power, and repetition fee of sound-condition lasers, laser crystals will acquire to larger sizes, greater crystal high quality, and controllable crucial functionality.
It could be oriented for near perpendicular incidence of the laser beam, or at Brewster's angle. It may be set in a few solid mount which also acts like a heat sink. Much larger crystals are often useful for side pumping e.g. with superior-electricity diode bars.
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