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

Tetsuo Fukuchi; Takuya Nayuki; Koshichi Nemoto; Kiichiro Uchino

doi:10.1002/eej.20011

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

Tetsuo Fukuchi, Takuya Nayuki, Koshichi Nemoto, Kiichiro Uchino

Electrical Engineering Sciences

Research output: Contribution to journal › Article › peer-review

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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 language	English
Pages (from-to)	76-83
Number of pages	8
Journal	Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Volume	148
Issue number	2
DOIs	https://doi.org/10.1002/eej.20011
Publication status	Published - Jul 30 2004

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1002/eej.20011

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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.",

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

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