Abstract

Interference fringes arising from multiple reflections can significantly alter the diffraction patterns of diffractive optical elements. One way to reduce interference effects is by time-integrating the diffraction pattern while frequency sweeping the laser source. This method is especially useful when it is not possible to remove the cover glass from the observation camera.

© 1998 Optical Society of America

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References

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  1. G. O. Reynolds et al., Physical Optics Notebook: Tutorials in Fourier Optics (SPIE Optical Engineering Press, Bellingham, Wash., 1989), pp. 204–219.
  2. G. O. Reynolds et al., Physical Optics Notebook: Tutorials in Fourier Optics (SPIE Optical Engineering Press, Bellingham, Wash., 1989), pp. 278.

Reynolds, G. O.

G. O. Reynolds et al., Physical Optics Notebook: Tutorials in Fourier Optics (SPIE Optical Engineering Press, Bellingham, Wash., 1989), pp. 204–219.

G. O. Reynolds et al., Physical Optics Notebook: Tutorials in Fourier Optics (SPIE Optical Engineering Press, Bellingham, Wash., 1989), pp. 278.

Other (2)

G. O. Reynolds et al., Physical Optics Notebook: Tutorials in Fourier Optics (SPIE Optical Engineering Press, Bellingham, Wash., 1989), pp. 204–219.

G. O. Reynolds et al., Physical Optics Notebook: Tutorials in Fourier Optics (SPIE Optical Engineering Press, Bellingham, Wash., 1989), pp. 278.

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Figures (2)

Figure 1
Figure 1

Multiple reflection between two interfaces.

Figure 2
Figure 2

Image of laser illumination through a microscope slide and the cover glass of the CCD. Image (a) without and (b) with frequency sweep.

Equations (2)

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Δ λ = λ 2 / 2 n d = ( λ / ν ) ( c / 2 n d )
Δ λ / λ     w / f

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