Abstract

An air-wedge lateral-shear interferometer using two prisms is presented. With a variable shear, the interferometer is suitable for testing collimation of a wide range of beam sizes down to a few millimeters in diameter. No antireflection coatings are necessary. Collimation for a light source with short coherent length is also demonstrated.

© 2009 Optical Society of America

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References

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  1. M. V. R. K. Murty, “The use of a single plane parallel plate as a lateral shearing interferometer with a visible gas laser source,” Appl. Opt. 3, 531-534 (1964).
    [CrossRef]
  2. M. V. Mantravadi, “Lateral shearing interferometers,” in Optical Shop Testing, 2nd ed., D. Malacara, ed. (Wiley1992), pp. 123-172.
  3. P. Hariharan, “Simple laser interferometer with variable shear and tilt,” Appl. Opt. 14, 1056-1057 (1975).
    [CrossRef] [PubMed]
  4. E. Hecht, Optics, 4th ed. (Addison-Wesley, 2002), Chap. 5.
  5. R. P. Shukla, N. C. Das, M. V. Mantravadi, D. Cook, and M. D. Aggarwal, “Design and fabrication of a variable frequency grating and its application as a lateral-shear interferometer having a variable shear,” Opt. Laser Technol. 39, 338-346(2007).
    [CrossRef]
  6. L. Gouhua, Z. Mingshan, and Z. Jingbin, “Improved wedge-plate shearing interferometric technique for a collimation test,” Appl. Opt. 31, 4363-4364 (1992).
    [CrossRef] [PubMed]
  7. Y. W. Lee, H. M. Cho, and I. W. Lee, “Half-aperture shearing interferometer for collimation testing,” Opt. Eng. 32, 2837-2840 (1993).
    [CrossRef]
  8. J. S. Darlin, M. P. Kothiyal, and R. S. Sirohi, “Wedge plate interferometry: a new dual field configuration for collimation testing,” Opt. Laser Technol. 30, 225-228 (1998).
    [CrossRef]

2007

R. P. Shukla, N. C. Das, M. V. Mantravadi, D. Cook, and M. D. Aggarwal, “Design and fabrication of a variable frequency grating and its application as a lateral-shear interferometer having a variable shear,” Opt. Laser Technol. 39, 338-346(2007).
[CrossRef]

1998

J. S. Darlin, M. P. Kothiyal, and R. S. Sirohi, “Wedge plate interferometry: a new dual field configuration for collimation testing,” Opt. Laser Technol. 30, 225-228 (1998).
[CrossRef]

1993

Y. W. Lee, H. M. Cho, and I. W. Lee, “Half-aperture shearing interferometer for collimation testing,” Opt. Eng. 32, 2837-2840 (1993).
[CrossRef]

1992

1975

1964

Aggarwal, M. D.

R. P. Shukla, N. C. Das, M. V. Mantravadi, D. Cook, and M. D. Aggarwal, “Design and fabrication of a variable frequency grating and its application as a lateral-shear interferometer having a variable shear,” Opt. Laser Technol. 39, 338-346(2007).
[CrossRef]

Cho, H. M.

Y. W. Lee, H. M. Cho, and I. W. Lee, “Half-aperture shearing interferometer for collimation testing,” Opt. Eng. 32, 2837-2840 (1993).
[CrossRef]

Cook, D.

R. P. Shukla, N. C. Das, M. V. Mantravadi, D. Cook, and M. D. Aggarwal, “Design and fabrication of a variable frequency grating and its application as a lateral-shear interferometer having a variable shear,” Opt. Laser Technol. 39, 338-346(2007).
[CrossRef]

Darlin, J. S.

J. S. Darlin, M. P. Kothiyal, and R. S. Sirohi, “Wedge plate interferometry: a new dual field configuration for collimation testing,” Opt. Laser Technol. 30, 225-228 (1998).
[CrossRef]

Das, N. C.

R. P. Shukla, N. C. Das, M. V. Mantravadi, D. Cook, and M. D. Aggarwal, “Design and fabrication of a variable frequency grating and its application as a lateral-shear interferometer having a variable shear,” Opt. Laser Technol. 39, 338-346(2007).
[CrossRef]

Gouhua, L.

Hariharan, P.

Hecht, E.

E. Hecht, Optics, 4th ed. (Addison-Wesley, 2002), Chap. 5.

Jingbin, Z.

Kothiyal, M. P.

J. S. Darlin, M. P. Kothiyal, and R. S. Sirohi, “Wedge plate interferometry: a new dual field configuration for collimation testing,” Opt. Laser Technol. 30, 225-228 (1998).
[CrossRef]

Lee, I. W.

Y. W. Lee, H. M. Cho, and I. W. Lee, “Half-aperture shearing interferometer for collimation testing,” Opt. Eng. 32, 2837-2840 (1993).
[CrossRef]

Lee, Y. W.

Y. W. Lee, H. M. Cho, and I. W. Lee, “Half-aperture shearing interferometer for collimation testing,” Opt. Eng. 32, 2837-2840 (1993).
[CrossRef]

Mantravadi, M. V.

R. P. Shukla, N. C. Das, M. V. Mantravadi, D. Cook, and M. D. Aggarwal, “Design and fabrication of a variable frequency grating and its application as a lateral-shear interferometer having a variable shear,” Opt. Laser Technol. 39, 338-346(2007).
[CrossRef]

M. V. Mantravadi, “Lateral shearing interferometers,” in Optical Shop Testing, 2nd ed., D. Malacara, ed. (Wiley1992), pp. 123-172.

Mingshan, Z.

Murty, M. V. R. K.

Shukla, R. P.

R. P. Shukla, N. C. Das, M. V. Mantravadi, D. Cook, and M. D. Aggarwal, “Design and fabrication of a variable frequency grating and its application as a lateral-shear interferometer having a variable shear,” Opt. Laser Technol. 39, 338-346(2007).
[CrossRef]

Sirohi, R. S.

J. S. Darlin, M. P. Kothiyal, and R. S. Sirohi, “Wedge plate interferometry: a new dual field configuration for collimation testing,” Opt. Laser Technol. 30, 225-228 (1998).
[CrossRef]

Appl. Opt.

Opt. Eng.

Y. W. Lee, H. M. Cho, and I. W. Lee, “Half-aperture shearing interferometer for collimation testing,” Opt. Eng. 32, 2837-2840 (1993).
[CrossRef]

Opt. Laser Technol.

J. S. Darlin, M. P. Kothiyal, and R. S. Sirohi, “Wedge plate interferometry: a new dual field configuration for collimation testing,” Opt. Laser Technol. 30, 225-228 (1998).
[CrossRef]

R. P. Shukla, N. C. Das, M. V. Mantravadi, D. Cook, and M. D. Aggarwal, “Design and fabrication of a variable frequency grating and its application as a lateral-shear interferometer having a variable shear,” Opt. Laser Technol. 39, 338-346(2007).
[CrossRef]

Other

E. Hecht, Optics, 4th ed. (Addison-Wesley, 2002), Chap. 5.

M. V. Mantravadi, “Lateral shearing interferometers,” in Optical Shop Testing, 2nd ed., D. Malacara, ed. (Wiley1992), pp. 123-172.

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Figures (6)

Fig. 1
Fig. 1

Schematic of the lateral-shear interferometer utilizing two prisms.

Fig. 2
Fig. 2

Schematic of the experimental setup of a lateral-shearing interferometer for collimation testing. MR, mirror; MO, microscope objective; PH, pinhole; CL, collimating lens; AP, aperture; P1, front prism; P2, back prism; RT, rotator; CCD, charge-coupled device; f, position at focus; and ± Δ f , amount of defocus.

Fig. 3
Fig. 3

Typical lateral-shearing interferograms in the presence of primary spherical aberration for the parallel air-gap configuration: (a) inside the focus, (b) at the focus, and (c) outside the focus.

Fig. 4
Fig. 4

Interferograms obtained from a 10 mm diameter beam. The focal length is 170 mm while the amount of shear is 3.5 mm : (a) inside the focus ( Δ f = 400 μm ), (b) at the focus ( Δ f = 0 ), and (c) outside the focus ( Δ f = + 400 μm ).

Fig. 5
Fig. 5

Interferograms obtained from a 2 mm diameter beam. The focal length is 170 mm while the amount of shear is 0.5 mm : (a) inside the focus ( Δ f = 5.00 mm ), (b) at the focus ( Δ f = 0 ), and (c) outside the focus ( Δ f = + 5.00 mm ).

Fig. 6
Fig. 6

Interferograms obtained from a mercury arc-lamp source: (a)  436 nm line, (b)  546 nm line, and (c)  578 nm line.

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