УДК: 535.417

Shearing-interferometry method of investigating the volume distribution of optical inhomogeneities in spatially extended phase objects

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Шехтман В.Н., Родионов А.Ю. Сдвиговый интерферометрический метод исследования объемного распределения оптических неоднородностей в пространственно-протяженных фазовых объектах // Оптический журнал. 2015. Т. 82. № 4. С. 14–22.

Shekhtman V.N., Rodionov A.Yu. Shearing-interferometry method of investigating the volume distribution of optical inhomogeneities in spatially extended phase objects [in Russian] // Opticheskii Zhurnal. 2015. V. 82. № 4. P. 14–22.

For citation (Journal of Optical Technology):

V. N. Shekhtman and A. Yu. Rodionov, "Shearing-interferometry method of investigating the volume distribution of optical inhomogeneities in spatially extended phase objects," Journal of Optical Technology. 82(4), 205-211 (2015). https://doi.org/10.1364/JOT.82.000205

Abstract:

An interferometry method has been proposed and tested for investigating the inhomogeneity of transparent three-dimensional objects in cross sections normal to the direction of a probe beam. Interferograms that contain the indicated information are obtained by forming a probing light beam with low spatial coherence and by recording shearing interferograms for which two images of the object of interest are brought into coincidence so that pairs of coherent points in them spatially coincide. The probing light beam is formed by means of an interference synthesizer that carries out amplitude division of the source beam into two identical beams and brings them into coincidence with a relative spatial shift. Then, after the probe beam passes through the object of interest in the interferometer unit, the images are brought into coincidence. Experimental checking is carried out by using phase screens.

Keywords:

lateral shift, shearing interferometer, optical inhomogeneity, phase distortions

OCIS codes: 120.3180

References:

1. A. N. Tikhonov, V. Ya. Arsenin, and A. A. Timonov, Mathematical Problems of Computer Tomography (Nauka, Moscow, 1987).
2. E. I. Astakhova and A. A. Zabelin, “Shearing interferometer,” Inventor’s Certificate 673 839, Byull. Izobr. No. 26 (1979).
3. A. A. Zabelin, “Dual-beam shearing interferometer,” Inventor’s Certificate 202 550, Byull. Izobr. No. 19 (1967).
4. J. W. Goodman, Statistical Optics (Wiley, New York, 1985; Mir, Moscow, 1988).
5. V. N. Shekhtman, “Synthesis of interferograms by lateral shear to measure wave front of a light beam,” in Proceedings of the NATO Advanced Research Workshop on Optical Resonators—Theory and Design, Series: Nato Science Partnership. Subseries: 3, vol. 45, Boston/London, July 1–5, 1997 (Kluwer Academic, Dordrecht, 1988), pp. 301–307.
6. S. I. Inshakov, A. Yu. Rodionov, A. S. Shirin, and V. N. Shekhtman, “Interferometer for simultaneously recording two interferograms with orthogonal shift directions,” in Abstracts of the Eleventh International Scientific and Technical Conference on Optical Methods of Studying Flows, Moscow, 2011, pp. 15–16.