[CThA6D] Comb Metrology II

[CThA6D-03] Shape Measurement Technique with Self-correction of Air Refractive using a Single-color Comb Interferometer

*Takuho Tanaka¹, Kanyo Akuzawa¹, Takashi Kato^1,2, Kaoru Minoshima¹ (1. The University of Electro-Communications (Japan), 2. PRESTO JST (Japan))

[Presentation Style] Onsite

We developed a technique for precise shape measurements over a long distance in air. We achieved self-correction of air refractive index fluctuation with 3-µm uncertainty over 61-m using two-color method with single-wavelength optical frequency comb.