title: Optical frequency comb profilometry using a single-pixel camera composed of digital micromirror devices.
abstract: We demonstrate an optical frequency comb profilometer with a single-pixel camera to measure the position and profile of an object's surface that exceeds far beyond light wavelength without 2π phase ambiguity. The present configuration of the single-pixel camera can perform the profilometry with an axial resolution of 3.4 μm at 1 GHz operation corresponding to a wavelength of 30 cm. Therefore, the axial dynamic range was increased to 0.87×105. It was found from the experiments and computer simulations that the improvement was derived from higher modulation contrast of digital micromirror devices. The frame rate was also increased to 20 Hz.
authors.forename: Quang Duc
authors.initials: QD
authors.lastname: Pham
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Hayasaki