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RESEARCH PRODUCT
Single-shot digital holography by use of the fractional Talbot effect
Lluís Martínez-leónEnrique TajahuercePedro AndrésJesús LancisMaría Araiza-eBahram JavidiVicent Climentsubject
Optics and PhotonicsHolographyHolographyPhysics::Opticslaw.inventionImaging Three-DimensionalOpticslawImage Processing Computer-AssistedTalbot effectComputer SimulationImage sensorWavefrontPhysicsbusiness.industryLasersTalbot effectReproducibility of ResultsEquipment DesignFrame rateAtomic and Molecular Physics and OpticsInterferometryInterferometryReference beamImagebusinessDigital holographydescription
We present a method for recording in-line single-shot digital holograms based on the fractional Talbot effect. In our system, an image sensor records the interference between the light field scattered by the object and a properly codified parallel reference beam. A simple binary two-dimensional periodic grating is used to codify the reference beam generating a periodic three-step phase distribution over the sensor plane by fractional Talbot effect. This provides a method to perform single-shot phase-shifting interferometry at frame rates only limited by the sensor capabilities. Our technique is well adapted for dynamic wavefront sensing applications. Images of the object are digitally reconstructed from the digital hologram. Both computer simulations and experimental results are presented.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-01-01 | Optics Express |