Development of a high-speed laser interferometer using an acousto-optic deflector

Tetsuo Fukuchi, Takuya Nayuki, Koshichi Nemoto, Kiichiro Uchino

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Abstract

An acousto-optic laser deflector was used as a shutter for high-speed imaging of laser interference fringes using an ordinary CCD camera. The exposure duration was set by the pulse width of the high-frequency signal applied to the acousto-optic deflector. Changes in laser interference fringes due to an impulse discharge in air were obtained at an exposure duration of 4 μs. By applying a sequence of high-frequency signals with different frequency, the beam was deflected to four different angles at different times, allowing four interference images to be captured on a single video frame. This was used for time-resolved imaging of the interference fringe pattern.

Original languageEnglish
Pages (from-to)76-83
Number of pages8
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Volume148
Issue number2
DOIs
Publication statusPublished - Jul 30 2004

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All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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