High-resolution parallel multipass laser interferometer with an interference fringe spacing of 15 nm

Jeongmin Lee, Hosang Yoon, Tai Hyun Yoon

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)

    Abstract

    We present a high-resolution laser interferometer based on the parallel multipass configuration with a pair of right-angle prisms to increase the optical fringe subdivision order up to 21. In the experiment, a multipass homodyne Michelson interferometer (MHMI) with the fringe spacing of 15 nm was demonstrated, resulting in the displacement measurement with a measurement resolution of 180 pm limited by the sampling rate of the employed analog-to-digital converter. We show that the ultimate resolution of the demonstrated MHMI scales with 1/N and it is estimated to be 8.7 pm for N=21.

    Original languageEnglish
    Pages (from-to)1118-1122
    Number of pages5
    JournalOptics Communications
    Volume284
    Issue number5
    DOIs
    Publication statusPublished - 2011 Mar 1

    Bibliographical note

    Funding Information:
    This research was supported by the Basic Research and NSL (National Space Lab) Programs through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology ( 2007-2-C00171 and 2008-2003197 ).

    Keywords

    • High-resolution interferometer
    • Interference fringe subdivision
    • Parallel multipass configuration

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics
    • Physical and Theoretical Chemistry
    • Electrical and Electronic Engineering

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