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1.3 PHYSICAL SCIENCES, Condensed matter physics, Optics, Polymer science
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.
Reddy, S., Jallapuram, R., Toal, V., Naydenova, I., Martin, S., Mintova, S.: 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.