Implementation of a speckle-correlation-based optical lever with extended dynamic range

A. Vijayakumar, D. Jayavel, M. Muthaiah, Shanti Bhattacharya, Joseph Rosen

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A speckle-correlation-based optical lever (SC-OptLev) is constructed for the measurement of small changes in the orientation angle of a surface. The dynamic range of SC-OptLev is found to be twice that of a conventional OptLev for the same experimental configurations. Different filtering mechanisms are implemented, and the correlation results are compared. Two types of computer-automated SC-OptLevs, an open-source-based computing system with a low-cost image sensor and a commercial computing system, are presented with assistive computational modules.

Original languageEnglish
Pages (from-to)5962-5968
Number of pages7
JournalApplied Optics
Volume58
Issue number22
DOIs
StatePublished - 1 Aug 2019

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