Design and Fabrication of Holographic Optical Elements for Applications in Electronic Speckle Pattern Interferometry and Laser Doppler Vibrometry

Viswanath Bavigadda, Dublin Institute of Technology
Emilia Mihaylova, Dublin Institute of Technology
Raghavendra Jallapuram, Dublin Institute of Technology
Vincent Toal, Dublin Institute of Technology

Document Type Conference Paper

DOI: 10.1117/12.803006 Proceedings Vol. 7098 Eighth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, Enrico Primo Tomasini, Editors, 70980O


An important area of application of holographic optical elements (HOEs) is in optical and electronic speckle pattern interferometry. The design, fabrication and characterization of holographic optical elements (HOEs) for electronic speckle pattern interferometry are presented. Reflection HOEs (RHOEs) were fabricated for use in electronic speckle pattern interferometers (ESPI) and laser Doppler vibrometers (LDV). The HOE-based interferometer is sensitive to out-of-plane displacements only. The results obtained are promising for future applications of the system for modal analysis.