Abstract
The use of a double-pulsed laser in interferometric metrology relaxes the stability requirements for the experimental setup. The use of such a laser also makes it possible for one to study high-speed dynamic processes. We justify the use of a double-pulsed laser in electronic shear interferometry. We show how image subtraction can be applied to produce high-quality fringe patterns without a special aperture design. The fringe visibility is studied theoretically and is compared with the fringe visibility obtained when the closely related television-holography technique is used. The new double-pulse subtraction technique offers the possibility of compensation for laser intensity fluctuations that can affect the fringe visibility significantly in pulsed electronic shear interferometry.
© 1993 Optical Society of America
Full Article | PDF ArticleMore Like This
Rudie Spooren
Appl. Opt. 31(2) 208-216 (1992)
Abundio Dávila, Guillermo H. Kaufmann, and Carlos Pérez-López
Appl. Opt. 37(19) 4116-4122 (1998)
Giancarlo Pedrini and Hans J. Tiziani
Appl. Opt. 33(34) 7857-7863 (1994)