Abstract

It is shown that very sharp multiple-beam interference fringes can be produced with a high-power 3-mm lens of numerical aperture 0.95. The optical conditions necessary to secure high definition in the fringes are discussed. The arrangement described is used with lateral magnification of ×1500. It can resolve in extension about 0.7μ and in depth about 50 A. The technique is illustrated by topographical studies on a dodecahedron face of a diamond. The fringes obtained are much superior to the best given by high-power two-beam interference microscopes. Volume elements as small as 5×10⁻¹⁵ cc can be resolved.

© 1955 Optical Society of America

Multiple-Beam Fringes of Equal Chromatic Order. Part V. Fringe Fine-Structure

W. F. Koehler and W. C. White
J. Opt. Soc. Am. 45(11) 940-944 (1955)

Multiple-Beam Fringes of Equal Chromatic Order. Part IV. Use of Multilayer Films

W. F. Koehler
J. Opt. Soc. Am. 45(11) 934-939 (1955)

Multiple-Beam Fringes of Equal Chromatic Order. Part VII. Mechanism of Polishing Glass*

W. F. Koehler
J. Opt. Soc. Am. 45(12) 1015-1020 (1955)

Multiple-Beam Fringes of Equal Chromatic Order. Part VI. Method of Measuring Roughness*

W. F. Koehler and W. C. White
J. Opt. Soc. Am. 45(12) 1011-1014 (1955)

High Resolution in the Infrared by Interferometry. Unambiguous Display without Overlapping Orders*

J. H. Jaffe, D. H. Rank, and T. A. Wiggins
J. Opt. Soc. Am. 45(8) 636-643 (1955)