A compact electronic speckle pattern interferometry system using a photopolymer reflection holographic optical element

Sridhar Reddy, Dublin Institute of Technology
Raghavendra Jallapuram, Dublin Institute of Technology
Vincent Toal, Dublin Institute of Technology
Izabela Naydenova, Dublin Institute of Technology
Suzanne Martin, Dublin Institute of Technology
Svetlana Mintova, University of Munich

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.