Cascade-Linked Multiple-Synthetic-Wavelength Digital Holography Using Optical Frequency Synthesizer

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  • YAMAGIWA Masatomo
    Graduate School of Technology, Industrial and Social Sciences, Tokushima University, JST, ERATO, MINOSHIMA Intelligent Optical Synthesizer Project
  • MINAMIKAWA Takeo
    Graduate School of Technology, Industrial and Social Sciences, Tokushima University, JST, ERATO, MINOSHIMA Intelligent Optical Synthesizer Project
  • YAMAMOTO Hirotsugu
    JST, ERATO, MINOSHIMA Intelligent Optical Synthesizer Project Center for Optical Research and Education, Utsunomiya University
  • YASUI Takeshi
    Graduate School of Technology, Industrial and Social Sciences, Tokushima University, JST, ERATO, MINOSHIMA Intelligent Optical Synthesizer Project

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Other Title
  • 光周波数シンセサイザーを用いたマルチ合成波長カスケードリンク型 デジタル・ホログラフィー
  • ヒカリ シュウハスウ シンセサイザー オ モチイタ マルチ ゴウセイ ハチョウ カスケードリンクガタ デジタル ・ ホログラフィー

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We present multiple-synthetic-wavelength digital holography using an optical frequency synthesizer (OFS) phaselocked to an optical frequency comb. The cascaded links of multiple synthetic wavelengths and a single optical wavelength generated by an OFS enable 3D shape measurements with a wide axial dynamic range and high-axial resolution. We demonstrate the shape measurements of a 1-mm step surface with an axial precision of a few tens of nm by cascading five synthesized wavelengths and a single optical wavelength.

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