Dispersion-free absolute interferometry based on angular spectrum scanning.
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.
Duan
Zhihui
Z
Miyamoto
Yoko
Y
Takeda
Mitsuo
M