Fast electro-optical system for pulsed ESPI carrier fringe generation

被引:23
作者
Davila, A [1 ]
Kerr, D [1 ]
Kaufmann, GH [1 ]
机构
[1] UNIV NACL ROSARIO,CONICET,INST FIS ROSARIO,RA-2000 ROSARIO,ARGENTINA
关键词
D O I
10.1016/0030-4018(95)00601-X
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Pulsed Electronic Speckle Pattern Interferometry (ESPI) offers the possibility of analysing fast transient phenomena in experimental mechanics. However, due to the short pulse separation required, addition fringes with very low visibility are generated. Several methods have recently been developed to process these data but they all suffer some limitations. This paper presents an electro-optical system based on the use of a Pockels cell which enables the introduction of carrier fringes between the firing of two consecutive laser pulses. This allows calculation of the wrapped phase distribution from a single fringe pattern using the Spatial Synchronous Detection method and enables the laser pulse separation to be significantly reduced. Preliminary experimental measurements performed using a continuous wave laser are used to illustrate the performance of this approach.
引用
收藏
页码:457 / 464
页数:8
相关论文
共 16 条
[1]  
Creath K, 1988, PROGR OPTICS, VXXVI
[2]   DIGITAL PROCESSING OF ELECTRONIC SPECKLE PATTERN INTERFEROMETRY ADDITION FRINGES [J].
DAVILA, A ;
KERR, D ;
KAUFMANN, GH .
APPLIED OPTICS, 1994, 33 (25) :5964-5969
[3]   ROBUST 2-DIMENSIONAL WEIGHTED AND UNWEIGHTED PHASE UNWRAPPING THAT USES FAST TRANSFORMS AND ITERATIVE METHODS [J].
GHIGLIA, DC ;
ROMERO, LA .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1994, 11 (01) :107-117
[4]   INVESTIGATION OF THE FOURIER-TRANSFORM METHOD OF FRINGE PATTERN-ANALYSIS [J].
GREEN, RJ ;
WALKER, JG ;
ROBINSON, DW .
OPTICS AND LASERS IN ENGINEERING, 1988, 8 (01) :29-44
[5]   CONTRAST ENHANCEMENT OF PULSED ESPI ADDITION FRINGES [J].
KAUFMANN, GH ;
KERR, D ;
HALLIWELL, NA .
OPTICS AND LASERS IN ENGINEERING, 1994, 20 (01) :25-34
[6]   DIGITAL HOLOGRAPHIC INTERFERENCE-PHASE MEASUREMENT USING THE FOURIER-TRANSFORM METHOD [J].
KREIS, T .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1986, 3 (06) :847-855
[7]  
Lim J. S., 1981, OPT ENG, V20, P670
[8]  
LIM JS, 1980, IEEE T ACOUST SPEECH, V28, P191
[9]   DOUBLE PULSE-ELECTRONIC SPECKLE INTERFEROMETRY [J].
PEDRINI, G ;
PFISTER, B ;
TIZIANI, H .
JOURNAL OF MODERN OPTICS, 1993, 40 (01) :89-96
[10]   NOISE-REDUCTION IN TWIN-PULSED ADDITION ELECTRONIC SPECKLE PATTERN INTERFEROMETRY FRINGE PATTERNS [J].
SANTOYO, FM ;
MOORE, AJ ;
TYRER, JR ;
OCHOA, NA .
OPTICAL ENGINEERING, 1994, 33 (05) :1712-1716