optic apparatus造句

• With the development of science and technology, more and more oxide crystals are synthesized by more and more advanced technique, the new oxide crystals are incessantly synthesized and the new characters of oxide crystals are incessantly founded . corundum dopped with impurity not only is cherished because of it's beautiful appearance, but also is used in the fields such as electrotechnics, mechanism, laser, the optic apparatus and the underlay of semiconductor . sapphire dopped with ti3 + is the best material of the tunable solid laser . zno crystal is material of the direct gap semiconductor ( the width of forbidden band : 3.37ev ) . the excited emission in zno crystal at room temperature has been found, so the ultraviolet luminescence in zno semiconductor can be acquired at room temperature
  含有少量杂质的刚玉晶体(-al_2o_3)不仅由于其色泽艳丽成为人们珍爱的名贵宝石，而且由于它具有的优异性能，被广泛应用于电工、机械、激光器，光学器件和半导体衬底材料。钛蓝宝石是目前最优异的固体宽带调谐激光材料，用于制作飞秒脉冲可调谐激光器。氧化锌晶体是直接带隙宽禁带半导体材料(禁带宽度3.37ev)，现已发现具有室温下受激发射特性，有可能实现室温下半导体紫外发光。
• Some usual measurement methods are introduced, and their advantages and disadvantages are also analyzed in detail . in view of the defects of the usual methods and the latest developments in bi-photon effect, an all-fiber-measurement system for ultra short pulse was designed in this work, based on the knowledge of nonlinear fiber optics, application of passive optic apparatus, optic-electric transformation, analog circuit, micro chip unit ( mcu ) and so on
  针对常用方法的不足,结合近些年来双光子效应的研究成果,我们采用双光子探测器取代常用的非线性晶体,并首次利用光纤延迟取代空间光路延迟,综合了非线性光纤光学、光无源器件的应用、光电转换、模拟电路、单片机等知识,设计出了一套全光纤超短脉冲测量系统。