Length Traceability Using Optical Frequency Comb

Abstract:

High-precision length measurements are strongly demanded for not only industry requirements and science purposes.In 2009, a femtosecond optical frequency comb (FOFC) was adopted in Japan as the national standard tool for measuring length. Recently, numerous studies have focused on FOFC-based high-precision length measurement because this approach offers the possibility of development of a ultimate green length traceability system. A single-wavelength helium–neon (He–Ne) laser was used as a length standard. An FOFC emits discrete pulse-train-shaped light. This markedly different characteristic exists between a He-Ne laser and an FOFC is the reason for the challenge. Previous attempts to challenge this problem have not been satisfactory. This has limited the development and applications of FOFC-based length measurement. In this work, we review our efforts of FOFC-based high-precision length measurement toward developing an ultimate green length traceability system.

• Periodical: Key Engineering Materials (Volume 625)
• Pages: 322-325
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.625.322
• Online since: August 2014
• Authors: Dong Wei*, Kiyoshi Takamasu, Hirokazu Matsumoto
• Keywords: Interferometry, Length Measurement, Length Standard, Length Traceability, Optical Frequency Comb

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