空间载波相移法用于全息CT测量气体温度场  

Spatial carrier phase-shifting method to the holographic CT measurement of gas temperature field

作　　者：陈希慧[1] 焦春妍[1] 李俊昌[1] 

机构地区：[1]昆明理工大学理学院,昆明650093

出　　处：《激光技术》2006年第4期412-414,共3页Laser Technology

基　　金：云南省自然科学基金资助项目(20042F0025M)

摘　　要：为了能从干涉图像中快速识别相位,将空间载波相移法用于实时全息检测,以电热丝周围的气体为研究对象,采用单次曝光法作了实时全息实验,获得两种干涉图像,结合全息CT技术,均得到了待测气体的温度场。研究结果经比较表明,该方法在实时全息干涉测量中,不但可行,而且准确度高,便于实际应用。Spatial carrier phase-shlftlng method is used to real time holography detection for identifying phase quickly from interferogram. A real time holographic experiment is done on the gas around a heating cord by single exposure method and two types of interferogram are obtained. By using holographic CT technique, the temperature fields are both calculatod. The comparison results show that the method is feasible and easy to practical application in real time holographic interferometry. Its accuracy is high.

关 键 词：全息 相位测量 全息干涉术 空间载波相移法 CT技术 温度场 

分 类 号：O438.1[机械工程—光学工程]