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Optica Publishing Group
  • 2013 Conference on Lasers and Electro-Optics Pacific Rim
  • (Optica Publishing Group, 2013),
  • paper TuF2_4

Interference imaging profilometry using optical frequency comb and compressive sensing

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Abstract

We describe a new optical system using an ultra-stable mode-locked frequency comb femtosecond laser and the compressive sensing to measure an object surface profile. The highly-stabilized frequency comb laser is used to measure an object with a large depth very precisely without any 2π phase ambiguity. The compressive sensing is able to perform profilometry with two single pixel fast photo-receivers and few measurements. We demonstrate high dynamic range profilometry for a large depth object.

© 2013 IEICE

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