title: Dispersion-free absolute interferometry based on angular spectrum scanning.
abstract: As an alternative to the conventional optical frequency scanning technique, an angular spectrum scanning technique is proposed for absolute interferometry. Instead of sweeping the optical frequency over a wide range of spectrum, we sweep the angular spectrum by changing the incident angle of a monochromatic plane wave with a spatial light modulator (SLM). The use of monochromatic light combined with the SLM enables dispersion-free absolute interferometry that is free from mechanical moving components.
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Duan
authors.forename: Yoko
authors.initials: Y
authors.lastname: Miyamoto
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Takeda