The Laser Crystal Diaries
The Laser Crystal Diaries
Blog Article
Noticeable sound-point out lasers based on laser crystals are compact and lightweight. Lasers from deep pink to blue have been claimed. Primarily, there have been lots of experiences on Pr3+ doped laser crystals, and ongoing wave lasers all around 490 nm have already been achieved. Ti∶sapphire is the leading acquire crystal for ultrafast lasers. Superintense ultrafast lasers with peak power ranging from various hundred terawatts to 10 petawatts demand significant-high quality and huge-sized Ti∶sapphire crystal. The origin of defect associated optical absorption in Ti∶sapphire and the growth of enormous-sized high-good quality crystals are two significant challenges that urgently should be addressed. In recent years, we analyzed the mechanism of defect relevant optical absorption in Ti∶sapphire theoretically, and grew significant-sized higher-top quality crystals as a result of warmth Trade process. The most crucial activating ions for one μm laser crystals are Nd3+ and Yb3+. Nd∶YAG is definitely the most generally used laser crystal. In recent years, we explored numerous new Nd3+ doped fluoride and oxide laser crystals, and solved the emission cross area difficulty of Nd∶Lu3Al5O12. SIOM claimed a completely new style of laser crystal Yb∶GdScO3, of which the obtain bandwidth is about 85 nm. The commonly utilized activation ions for two μm laser crystals are Tm3+ and Ho3+. Tm3+ is often immediately pumped by laser diode. Ho3+ has larger sized stimulated emission cross segment, and its emission wavelength is lengthier than two μm. We researched The expansion, spectroscopy, and laser functionality of Tm∶LiYF4, Tm∶LiLuF4, Ho∶LiYF4, Tm,Ho∶LiYF4, and Tm,Ho∶LiLuF4 crystals.
中国光学期刊网使用基�?cookie 的技术来更好地为您提供各项服务，点击此处了解我们的隐私策略�?如您需继续使用本网站，请您授权我们使用本地 cookie 来保存部分信息�?允许本站使用 cookie
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。
激光晶体中活性离子的作用是什么？ 活性离子在激光晶体中负责通过受激发射产生激光光线。
Which geometry, dopant and doping concentration in the acquire medium are most beneficial depend on quite a few aspects. The available pump source (kind of laser diode or lamp) and also the envisaged pumping arrangement are very important components, but the fabric by itself also has some impact. By way of example, titanium–sapphire lasers have to be pumped with higher intensities, for which the shape of a transversely cooled rod, operated with fairly modest pump and laser beam diameter, is much 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。
A higher area top quality is not surprisingly essential. Specs of floor flatness will often be much better than . This helps to stop equally scattering losses and wavefront distortions which could degrade the laser's beam excellent. On top of that, scratch and dig specifications
The maximum doable doping concentration can rely strongly on the host substance and its fabrication technique.
The host crystal is far more than simply a method to fix the laser-Energetic ions at specified positions in space. A variety of Qualities on the host product are important:
热膨胀和收缩系数对确定激光晶体的热透镜特性至关重要。最小化热透镜效应对于在广泛的操作温度范围内保持光束质量至关重要。
For quasi-3-level laser gain media or simply a few-stage acquire media, one generally has to Restrict the length to a worth which can be as well small for effective pump absorption, as reabsorption consequences would in any other case spoil the performance. For aspect pumping, supplemental factors appear into play; Other than effective here pump absorption, it can be crucial to get an appropriate spatial shape with the attain profile.
主体材料中活性离子掺杂物的数量是关键因素。它影响了激光的效率和性能。过低的浓度可能导致低输出，过高的浓度可能导致消光效应，降低晶体的效率。
The medium must have a significant transparency (lower absorption and scattering) while in the wavelength regions of pump and laser radiation, and superior optical homogeneity. To some extent, this is dependent upon the quality of the fabric, determined by information from the fabrication procedure.
It could be oriented for near perpendicular incidence of the laser beam, or at Brewster's angle. It might be fastened in a few good mount which also acts for a warmth sink. Much larger crystals are usually used for aspect pumping e.g. with large-electric power diode bars.
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。