Optimization of etalon parameters in direct detection doppler wind lidar 双边缘技术多普勒测风激光雷达标准具的优化
3.
Also , normal incidence is difficult to realize in practice . based on the above considerations , in this work , the transmission of a gaussian beam nonnormally through a fabry - perot etalon has been investigated 基于此,同时考虑到在应用中光束正入射fpf的情况往往是很难达到的,木文就高斯光束斜入射fpf后的透射光强分布进行研究。
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The subject mainly studies the splitting phenomena of laser longitudinal mode and the transmitted resonant mode of fabry - perot etalon using electrically controlled birefringence of liquid crystal , so as to find a new approach to obtain the dual - frequency laser output 本论文主要研究利用液晶的电控双折射效应分裂nd : yag激光纵模和f - p标准具谐振模,以寻求产生双频激光输出的新途径。
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In the photoluminescence ( pl ) spectra , a new emission band due to the exciton - exciton collision process ( p band ) is observed under low excitation intensity at room temperature . and some fine structures origination from the cavity modes of the fabry - p rot etalon could also be seen clearly 在单根zno微柱(直径有25 m )的p带发光峰上还可以观察到明显的f - p腔模式分布,通过计算得到其腔长为21 m ,同微米柱的尺寸相当。
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E . , the carrier frequency of a gaussian beam deviates from the resonant frequency of a fabry - perot etalon ) , variations of the peak intensity , the position of the peak intensity and the dwdm systems , has received considerable attention . in this work , after taking into account the wavelength - depended reflectivity distribution profile of a fiber bragg grating , the oscillation wavelength # _ ( 1 ) of long external cavity fiber bragg grat 与共振情况(即高斯光束的载波频率与法布里一拍罗滤波器的谐振频率一致)相比,非共振条件(即高斯光束的载波频率与法布里一拍罗滤波器的谐振频率存在偏差)一透射光束的峰值强度、峰值强度所对应的位置、以及光斑的大小随入射角的变化都发生了显著的改变。
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Then , a micro - machined array of optical pressure sensor has been discussed ; each sensor element in the array consists of a fabry - perot etalon fabricated from single - crystal silicon ; sensor ' s performance has been increased through improved the structure , and can makeup the arrays which be suitable for the smart - skin 其次,本文对一种传统的法布里一帕罗标准具型光纤压力传感器(该传感器阵列的每一单元均由单晶硅制造而成的法布里一怕罗标准具组成)进行了结构设计和性能分析。