TY - JOUR
T1 - Vibration phase mapping using holographic optical element-based electronic speckle pattern interferometry
AU - Bavigadda, Viswanath
AU - Mihaylova, Emilia
AU - Jallapuram, Raghavendra
AU - Toal, Vincent
PY - 2012/8
Y1 - 2012/8
N2 - An out-of-plane sensitive electronic speckle pattern interferometer (ESPI) using holographic optical elements (HOEs) for vibration phase mapping is reported. Constant phase contours across a sinusoidally vibrating circular metal plate are mapped using reference beam phase modulation in the unbalanced HOE based ESPI system. Reference phase modulation is implemented by modulating the drive current of a laser diode. The correlation fringes were obtained using the time average ESPI method. The phase measurement accuracy depends on the vibration amplitude of the object.
AB - An out-of-plane sensitive electronic speckle pattern interferometer (ESPI) using holographic optical elements (HOEs) for vibration phase mapping is reported. Constant phase contours across a sinusoidally vibrating circular metal plate are mapped using reference beam phase modulation in the unbalanced HOE based ESPI system. Reference phase modulation is implemented by modulating the drive current of a laser diode. The correlation fringes were obtained using the time average ESPI method. The phase measurement accuracy depends on the vibration amplitude of the object.
KW - Holographic optical elements (HOEs)
KW - Phase modulation
KW - Speckle interferometry
KW - Time average ESPI
KW - Vibration measurement
UR - https://www.scopus.com/pages/publications/84860685723
U2 - 10.1016/j.optlaseng.2012.01.020
DO - 10.1016/j.optlaseng.2012.01.020
M3 - Article
AN - SCOPUS:84860685723
SN - 0143-8166
VL - 50
SP - 1161
EP - 1167
JO - Optics and Lasers in Engineering
JF - Optics and Lasers in Engineering
IS - 8
ER -