High-visibility interference fringes with femtosecond laser radiation.
We propose and experimentally demonstrate an interferometer for femtosecond pulses with spectral bandwidth about 100 nm. The scheme is based on a Michelson interferometer with a dispersion compensating module. A diffractive lens serves the purpose of equalizing the optical-path-length difference for a wide range of frequencies. In this way, it is possible to register high-contrast interference fringes with micrometric resolution over the whole area of a commercial CCD sensor for broadband femtosecond pulses.
Martínez-Cuenca
Raúl
R
GROC.UJI, Departament de Física, Universitat Jaume I, 12080 Castelló, Spain. rcuenca@fca.uji.es
Martínez-León
Lluís
L
Lancis
Jesús
J
Mínguez-Vega
Gladys
G
Mendoza-Yero
Omel
O
Tajahuerce
Enrique
E
Clemente
Pere
P
Andrés
Pedro
P
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D007834:Lasers; D007909:Lenses; D012031:Refractometry / Q000295:instrumentation*