| 11. | This is compared to a reference beam, and an image of the tissue surface and subsurface is constructed.
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| 12. | The recording medium should be able to resolve fully all the fringes arising from interference between object and reference beam.
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| 13. | In a reflection hologram, the object and reference beams are incident on the plate from opposite sides of the plate.
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| 14. | Any change in the shape, orientation or wavelength of the reference beam gives rise to aberrations in the reconstructed image.
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| 15. | In this orientation, the test and reference beams each experience two front-surface reflections, resulting in the same number of phase inversions.
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| 16. | The complexity of such setups shifts from the optical setup to image post-processing, which involves the use of simulated reference beams.
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| 17. | Each point source wave interferes with the reference beam, giving rise to its own sinusoidal zone plate in the recording medium.
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| 18. | Some double-beam instruments have two detectors ( photodiodes ), and the sample and reference beam are measured at the same time.
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| 19. | In addition, part of the laser must shine directly onto a specific area of the display to act as a reference beam.
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| 20. | A common path interferometer is a class of interferometer in which the reference beam and sample beam travel along the same path.
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