STEP GAUGE MEASUREMENT USING HIGH-FREQUENCY REPETITIONS OF A MODE-LOCKED FIBER LASER

C. Narin, S. Takahashi, K. Takamasu, H. Matsumoto

Abstract

A high-frequency part of repetition frequency modes of mode-locked fiber laser is selected by a tandem Fabry–Pérot etalon. The 3-GHz repetition-modified laser is transmitted to a Michelson interferometer. The interference fringes generated have a temporal coherence pattern and can make positioning in space. The optical system of the interferometer is designed as double-path beams. A center between two beams is located at the position of a measuring probe of CMM. Using this design, we can apply the modelocked fiber laser to artifacts following contact method. The advantage of the contact method can measure variety-shape artifacts, i.e. step gauge etc, that non-contact method cannot be used.

Keywords

mode-locked fiber laser, tandem Fabry–Pérot etalon, high-frequency repetition, step gauge, CMM

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IMEKO-WC-2012-TC14-O19.pdf

DOI

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IMEKO TC

TC14 - Measurement of Geometrical Quantities

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