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Dual-reference holographic interferometry with a double pulsed laser.

G Lai, T Yatagai

|June 12, 2010

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Dual-reference holographic interferometry precisely measures transient deformations using a double-pulsed laser. This technique overcomes lateral motion challenges for accurate solid object displacement and deformation analysis.

Area of Science:

Optics and Photonics
Experimental Mechanics
Metrology

Background:

Transient deformation phenomena require precise measurement techniques.
Holographic interferometry offers non-contact measurement capabilities.
Existing methods face challenges with lateral motion and synchronization.

Purpose of the Study:

To apply dual-reference holographic interferometry to transient deformation.
To achieve automated interpretation of interferometric patterns.
To demonstrate precise measurement of solid object displacement and deformation.

Main Methods:

Utilizing a double-pulsed laser for holographic recording.
Implementing dual-reference reconstruction for automated fringe analysis.

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Last Updated: Jun 12, 2026

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Published on: February 4, 2017

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Compensating for lateral motion by adjusting the reference angle.

Demonstrating two synchronization methods for pulsed laser references.

Main Results:

Achieved measurement precision of lambda/35 for transient deformations.
Successfully compensated for lateral motion, enhancing fringe visibility.
Demonstrated automated interpretation of interferometric patterns.
Validated the technique for measuring displacement and deformation of diffusely scattering solids.

Conclusions:

Dual-reference holographic interferometry is effective for transient deformation analysis.
The developed method provides high precision and overcomes key limitations.
This technique offers a robust solution for non-contact metrology of dynamic events.