ELECTRONIC SHEAR INTERFEROMETRY - APPLICATION OF A (DOUBLE-) PULSED-LASER

• Tipo: Artigo em Revista Científica Internacional
• Data: 1993

Autores

SPOOREN, R (Autor) Outra; DYRSETH, AA (Autor) Outra; Mário Vaz (Autor) FEUP

Revista

Título: Applied optics

Vol. 32

Páginas: 4719-4727

ISSN: 0003-6935

Editora: The Optical Society

Indexação

ISI Web of Knowledge - 18 Citações

ISI Web of Science

Scopus - 18 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas

Outras Informações

ID Authenticus: P-001-MP0

Abstract (EN): 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9