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

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

doi:10.1364/AO.58.005982

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

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

Department of Electrical & Computer Engineering

Research output: Contribution to journal › Article › peer-review

16 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 language	English
Pages (from-to)	5962-5968
Number of pages	7
Journal	Applied Optics
Volume	58
Issue number	22
DOIs	https://doi.org/10.1364/AO.58.005982
State	Published - 1 Aug 2019

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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AU - Rosen, Joseph

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AB - 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.

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

Abstract

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