Simulation of optical propagation based on wave optics for phase retrieval in shadowgraph of ultrasonic field

Hiroki Hanayama, Takuya Nakamura, Ryo Takagi, Shin Yoshizawa, Shin Ichiro Umemura

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Shadowgraph method has been proposed for fast and noninterference measurement of ultrasonic pressure field. However, special care has been needed in choosing an appropriate optical propagation length to obtain a satisfactory signal-to-noise ratio of the measurement while avoiding error from a geometrical optics approximation. In this study, we propose a new numerical method replacing the geometrical optics approximation to retrieve the optical phase for the measurement. Optical intensity distribution obtained from the numerical simulation of optical propagation based on the Huygens-Fresnel principle agreed well with the measurement at a relatively large optical propagation length at which the geometrical optics approximation failed. Optical phase retrieval from the simulated optical intensity distribution by the proposed method was then tested. The range of optical propagation for successful phase retrieval was extended a few times by the proposed method compared with the geometrical optics approximation.

Original languageEnglish
Article number07JC13
JournalJapanese journal of applied physics
Volume56
Issue number7
DOIs
Publication statusPublished - 2017 Jul

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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