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An Instructional Two-Dimensional Diffraction Laboratory Using Patterns Created with Electron-Beam Lithography

Published online by Cambridge University Press:  11 February 2011

Colin Inglefield  and
Royce Anthon
Colin Inglefield
Affiliation:
Physics Department, Weber State University Ogden, UT 84408–2508, U.S.A.
Royce Anthon
Affiliation:
Physics Department, University of Utah Salt Lake City, UT 84112–0830, U.S.A.
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Abstract

An instructional laboratory in two-dimensional diffraction is discussed. The experiment is appropriate for undergraduate students in materials science, solid-state physics (as was the case with our group), modern physics, or optics. The experiment is performed using visible light from a laser incident on a 2D lattice of gold dots deposited with electron beam lithography on a glass substrate. The pattern is microscopic with a lattice constant on the same order of magnitude as the wavelength of light used. Students observe the diffraction pattern, and then quantitatively determine the positions of maxima. These data are used by the students to reconstruct the (real space) microscopic lattice. The students can simulate the experiment with software that computes reciprocal lattice and diffraction patterns for an arbitrary 2D lattice.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 760: Symposium JJ – The Undergraduate Curriculum in Materials Science and Engineering (MSE) , 2002 , JJ4.3
Copyright
Copyright © Materials Research Society 2003

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References

REFERENCES

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