Abstract

Details of the growth morphology at the interface surface of birefringent crystals growing from the melt can be observed by an interferometry technique using laser light to produce fringes which can be observed directly or recorded holographically. The fringes define contour lines of constant crystal thickness. The contour separation varies with the orientation of the crystal. For sodium nitrate the separation of adjacent fringes represents about 4-μm thickness difference, for optic axis orientation perpendicular to the incident light. Direct observation of the fringe development rate can be used to determine crystal growth rate precisely.

© 1970 Optical Society of America

Holographic Interferometry of Transparent Objects with Illumination Derived from Phase Gratings

C. M. Vest and D. W. Sweeney
Appl. Opt. 9(10) 2321-2325 (1970)

Application of Holographic Interferometry to the Static Meniscus

M. W. Wardle and H. J. Gerritsen
Appl. Opt. 9(7) 1639-1642 (1970)

A Determination of the Optimum Beam Ratio to Produce Maximum Contrast Photographic Reconstructions from Double-Exposure Holographic Interferograms

J. E. Sollid and J. B. Swint
Appl. Opt. 9(12) 2717-2719 (1970)

A New Technique to Study Photoelastic Dispersion in Cubic and Noncubic Crystals

K. Veerabhadra Rao and T. S. Narasimhamurty
Appl. Opt. 9(1) 155-159 (1970)

Holographic Recording on Electron Beam Colored Sodium Chloride Crystals

A. S. Mackin
Appl. Opt. 9(7) 1658-1664 (1970)