A compact electronic speckle pattern interferometry system using a photopolymer reflection holographic optical element
Document Type Conference Paper
S. Reddy Guntaka, J. Raghavendra, V. Toal, I. Naydenova, S. Martin, S. Mintova, A compact electronic speckle pattern interferometry system using a photopolymer reflection holographic optical element, SPIE proceedings of 17th International Conference on Photonics in Europe, V.5856, 157, 2005
Abstract
A simple and compact electronic speckle pattern interferometry system using a reflection holographic optical element is presented. The reflection holographic optical element is recorded on an acrylamide based photopolymer formulated and prepared at the Centre for Industrial & Engineering Optics. Light intensity of 40mW/cm2 with an exposure time of 60 seconds was used in fabricating the holographic optical element. The vibration mode patterns of a 4 cm diameter thin circular sheet of brass metal attached to a 4 cm diameter paper cone loud speaker are presented.