Holograms Made with Pulsed Argon–Ion Lasers Operating in Various Transverse Modes

Abstract
Holograms were made with millisecond pulses from argon-ion lasers of 5-mm, 8-mm, and 15-mm bore diam operating in either the fundamental or higher order modes. The temporal coherence of the lasers was improved by an order of magnitude through use of an intracavity etalon.