In this paper , we summarize the present testing level of optical aspheric surface , expound the principle of laser wavelength scanning interference testing method , and analyze the laser that can be tuned , and we also study the change of wavelength . further more , we achieve the elementary design of experiment device , curtly introduce the method for interference fringe processing and image processing by matlab 本文对目前国内外的光学非球面的测量现状作了概略的叙述，给出了激光波长扫描干涉测试方法的原理，对波长可调谐的激光光源进行了分析，对激光器波长的变化进行了研究，对实验装置进行了初步的设计，对干涉条纹图处理方法进行了研究，并通过编写matlab软件语言对干涉图进行了数字化处理。
Heat treatment can also change the multi - layer ' s ( ticvti / tin / ti / ticb ) reaction coefficient . the reaction coefficient is decided by the exterior ticvs thickness , and influenced by the n perce ntage on the surface of the multi - layers - , the crystal status of tio2 , and also influenced by the na + moved from the glass substrate 多层薄膜在300下热处理lh时，薄膜的紫外一可见光透过率曲线与未热处理时相比没有改变;在400下热处理1h时薄膜紫外一可见光透过率增大，并向长波方向移动;薄膜在500下热处理时透过率增加，并出现干涉条纹。
According to the different require of the phase mask , the holographic recording method for the design of linearly chirped phase mask is studied in this paper . the fringe formed by the interference of two spherical waves , whose density varies linearly with space , is used to record the chirped phase mask . the two design schemes proposed in this paper are analyzed and compared , and the experimental results are given 根据光纤光栅掩模的不同要求,研究讨论了用全息干涉方法制作线性啁啾位相掩模的设计方法,提出用两球面波干涉产生条纹密度随空间距离线性变化的干涉条纹记录啁啾位相光栅,分析比较了文中给出的两种设计方案,给出了实验验证结果,并且制作了线性啁啾光刻胶掩模。
Two wedge interferometers are designed that the thickness of one is higher than the other . so when the incident coherent light through the interferometers can acquire two fringe patterns which having space shift , but the incident incoherent light only result in consistent intensity signal . through a differentiating amplifier , two signals subtract which can eliminate noise of background and result in higher contrast ratio fringe signals . this method largely improves the system and the ability of detection . the spacing of line fringes is a function of incident laser wavelength , by analyzing , we can extract the wavelength of incident laser . the optical unit analyzing and results also simulated with matlab 当背景光入射时，直接穿过干涉仪，仅发生强度的衰减，在两个探测平面上产生幅度基本一致的灰度信号，通过差分放大器，相消为零，从而抑制了背景干扰。当激光信号入射，穿过干涉仪时受到调制，在探测平面上产生干涉条纹。通过所设计的存在平均厚度差的双楔形干涉仪，两路干涉条纹图案出现相对移位：在两个探测平面对应的位置上，一路出现亮纹，另一路出现暗纹。
On the basis of the chavacteristic that the interferometric fringes have minimum gradient in the tangent direction , this paper employs the spin filtering with curved windows along the fringe tangent direction for interferometric phase images , and its feasibility and efficiency in keeping the fringe information , suppression the noise and improving the unwrapping precision are proved through comparing the different filtering methods and the corresponding phase unwrapping results 文中根据干涉条纹在切线方向变化最小的特点，利用沿切线方向的曲线窗口对干涉相位图进行旋滤波降噪，并通过对比不同的滤波结果及相应相位解缠结果，证明了旋滤波在保持条纹结构信息，消除噪声和提高相位解缠精度应用中的可行性和有效性。
