&lt;title&gt;Scatterplate Interferometry: A Diffraction Theory&lt;/title&gt;

Johnson, Lee; Hayes, John

doi:10.1117/12.957722

Cited by 3 publications

(2 citation statements)

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“…As a result, the phase change due to scattering is the same for both beams. A theoretical model of the scatterpiate interferometer can be easily obtained using scalar diffraction theory (Johnson 1979). The model presented here will serve as a starting point for modeling the phase-shifting scatterpiate interferometer discussed in chapter four.…”

Section: Qualitative Description Of Scatterplate Interferometermentioning

confidence: 99%

Phase-shifting birefringent scatterplate interferometer

North-Morris¹,

VanDelden²,

Wyant³

2002

Appl. Opt.

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This manuscript has been reproduced from the microrilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter tace, while others may be from any type of computer printer.The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, cotored or poor quality illustrations and photographs, print bleedthrough, substarxlard margins, and improper alignment can adversely affect reproduction.In the unlikely event that the author dkl rK)t send UMI a complete manuscript and there are missirig pages, these will be noted. Also, if unauthorized copyright material had to t>e removed, a note will indicate the deletion.

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Section: Qualitative Description Of Scatterplate Interferometermentioning

confidence: 99%

Phase-shifting birefringent scatterplate interferometer

North-Morris¹,

VanDelden²,

Wyant³

2002

Appl. Opt.

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“…[1][2][3][4][5] Light with long coherence length can be used to test highly aspheric surfaces, but we want to use the short coherence length of white light to phase segments of a large conic mirror. [1][2][3][4][5] Light with long coherence length can be used to test highly aspheric surfaces, but we want to use the short coherence length of white light to phase segments of a large conic mirror.…”

Section: Null Corrector Design Overviewmentioning

confidence: 99%

<title>Null corrector design for white light scatterplate interferometry on a large conic surface</title>

2001

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We present a method for designing and testing a null corrector for use with scatterplate interferometry on a large conic mirror. The null corrector in a scatterplate interferometer must maintain OPD of less than ½ wave over a finite field size for optimal fringe visibility. Our design uses an aspheric diamond-turned mirror (DTM) to exactly cancel out the spherical aberration of the surface under test. The DTM has the additional benefit of being useable in other types of interferometers for testing of the conic surface in a null condition. Low power refractive elements correct field aberrations over the finite aperture of the scatterplate. The null corrector can be certified using another smaller DTM or a computer generated hologram (CGH). This design has the advantages of being small in size, less expensive than designs using spherical surfaces (due to the small size of the null-correcting mirror), useable with other interferometers, and easy to align.

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Null corrector design for white light scatterplate interferometry on a large conic surface

DeBoo

2002

Opt. Eng

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A novel null corrector design for use with a white light scatterplate interferometer on a large conic surface is presented. In this design, an aspheric diamond-turned mirror (DTM), hereafter called the nullcorrecting mirror (NCM), exactly cancels out the spherical aberration of the mirror under test. Low-power refractive elements correct field aberrations over the finite aperture of the scatterplate. The null corrector maintains a phase difference between the test and reference beams of less than 1 2 wave over the finite field size of the scatterplate for optimal fringe visibility. The null corrector can be certified using another smaller DTM and/or a computer-generated hologram. The design has the significant advantages of being small in size, less expensive than designs using spherical surfaces (due to the small size of the NCM), and useable with other interferometers. We include discussions on the calculation of the surface profile for the NCM and certifying mirror, field correction, and achromatization.

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<title>Scatterplate Interferometry: A Diffraction Theory</title>

Cited by 3 publications

References 0 publications

Phase-shifting birefringent scatterplate interferometer

Phase-shifting birefringent scatterplate interferometer

<title>Null corrector design for white light scatterplate interferometry on a large conic surface</title>

Null corrector design for white light scatterplate interferometry on a large conic surface

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