An Application of Wavefront Reconstruction to Interferometry

Horman, Melvin H.

doi:10.1364/ao.4.000333

Cited by 99 publications

(7 citation statements)

References 5 publications

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“…Horman 1965;Powell & Stetson 1965;Haines & Hildebrand 1966;Heflinger, Wuerker & Brooks 1966). The particular technique used in our stressmeter is double-exposure holographic interferometry and may be understood as a direct extension of the holographic method so far discussed.…”

Section: H O L O G R a P H I C T H E O R Ymentioning

confidence: 99%

Holographic in situ stress measurements

1987

International Journal of Rock Mechanics and Mining Sciences &am

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Summary.A new instrument for measuring the in siru level of stress in boreholes has been developed. The instrument operates on the principle of locally relieving the stresses acting on a rock mass by drilling a small hole into the borehole surface and recording the resultant displacement field by holographic interferometry. Because the recording technique is optical, the entire displacement field due to stress relief is obtained. A description of the stressmeter, theory of the interferometric technique, data reduction methodology, and results of laboratory stress relief calibration tests are presented. In addition, we present results from a field deployment of the instrument in an underground shale mine in Garfield County, Colorado using a test borehole within a support pillar. Sufficient data were obtained to constrain five of six stress components at a shallow level of the test borehole, thereby demonstrating the viability of the holographic technique. The holographic stressrelief data yield an approximate EW maximum horizontal stress direction. By comparison with previous hydrofracture measurements of Bredehoeft et al., our results indicate substantial stress-relief near the pillar face, thus masking any relicts of the far-field tectonic stress.

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Section: H O L O G R a P H I C T H E O R Ymentioning

confidence: 99%

Holographic in situ stress measurements

1987

International Journal of Rock Mechanics and Mining Sciences &am

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“…Almost since its inception as a practical tool, holography has been used to detect small motions, deformations or vibrations by the technique of holographic interferometry (e.g. Horman 1965;Powell & Stetson 1965;Haines & Hildebrand 1966;Heflinger, Wuerker & Brooks 1966). The particular technique used in our stressmeter is double-exposure holographic interferometry and may be understood as a direct extension of the holographic method so far discussed.…”

Section: H O L O G R a P H I C T H E O R Ymentioning

confidence: 99%

Holographic in situ stress measurements

Bass

Schmitt

Ahrens

1986

Geophysical Journal International

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A new instrument for measuring the in siru level of stress in boreholes has been developed. The instrument operates on the principle of locally relieving the stresses acting on a rock mass by drilling a small hole into the borehole surface and recording the resultant displacement field by holographic interferometry. Because the recording technique is optical, the entire displacement field due to stress relief is obtained. A description of the stressmeter, theory of the interferometric technique, data reduction methodology, and results of laboratory stress relief calibration tests are presented. In addition, we present results from a field deployment of the instrument in an underground shale mine in Garfield County, Colorado using a test borehole within a support pillar. Sufficient data were obtained to constrain five of six stress components at a shallow level of the test borehole, thereby demonstrating the viability of the holographic technique. The holographic stressrelief data yield an approximate EW maximum horizontal stress direction. By comparison with previous hydrofracture measurements of Bredehoeft et al., our results indicate substantial stress-relief near the pillar face, thus masking any relicts of the far-field tectonic stress.

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“…Holographic interferometry, which can be defined as the interferometric comparison of two or more waves, at least one of which is holographically reconstmcted (Vest, 1979), is the result of applying holography to classic interferometry (Horman, 1965;Brooks et al, 1965;Heflinger et al, 1966).…”

Section: General Characteristics Of Holographic Interferometrymentioning

confidence: 99%

Liquid diffusion measurement by holographic interferometry

et al. 1985

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The use of classic interferometry to study liquid diffusion has been well known since the 1940's. Much more recently holographic interfereometry was introduced in this field of study. In this paper a description of the general characteristics of holographic interferometry is presented. The evolution as well as the improvements of the technique are described.L'emploie de I'interfCromttrie classique pour Ctudier la diffusion dans les liquides est bien connu depuis les annees 1940; ce n'est que plus rkcemment que I'interfCromCtrie holographique a Ctt introduite dans ce domaine. On presente une description des caractkristiques gCnCrales de I'interfCromCtrie holographique. On discute I'Cvolution et les amCliorations de cette technique.he study of liquid diffusion plays an important role in

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An Application of Wavefront Reconstruction to Interferometry

Cited by 99 publications

References 5 publications

Holographic in situ stress measurements

Holographic in situ stress measurements

Holographic in situ stress measurements

Liquid diffusion measurement by holographic interferometry

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