Abstract
An acousto-optic laser deflector was applied to laser interferometric measurement of impulse discharges in air as a high-speed shutter. Laser interference fringes were obtained at exposure times of about 1 µs. The deflector was also used for time-resolved imaging of laser interference fringes by using a sequence of high frequency signals with different frequencies to deflect the laser beam to different angles at different times, allowing multiple interference images to be captured on a single video frame. Changes in laser interference fringes due to an impulse discharge in air showed electron densities of about 2×1024 m−3 and perturbation in the neutral density expanding at speeds of about 103 m/s.
| Original language | English |
|---|---|
| Pages (from-to) | 56-61 |
| Number of pages | 6 |
| Journal | The transactions of the Institute of Electrical Engineers of Japan.A |
| Volume | 124 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1 2004 |
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
Cite this
Application of an Acousto-optic Laser Deflector to Interferometric Measurement of Discharges in Air. / Fukuchi, Tetsuo; Nemoto, Koshichi; Matsumoto, Kouji; Uchino, Kiichiro.
In: The transactions of the Institute of Electrical Engineers of Japan.A, Vol. 124, No. 1, 01.01.2004, p. 56-61.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Application of an Acousto-optic Laser Deflector to Interferometric Measurement of Discharges in Air
AU - Fukuchi, Tetsuo
AU - Nemoto, Koshichi
AU - Matsumoto, Kouji
AU - Uchino, Kiichiro
PY - 2004/1/1
Y1 - 2004/1/1
N2 - An acousto-optic laser deflector was applied to laser interferometric measurement of impulse discharges in air as a high-speed shutter. Laser interference fringes were obtained at exposure times of about 1 µs. The deflector was also used for time-resolved imaging of laser interference fringes by using a sequence of high frequency signals with different frequencies to deflect the laser beam to different angles at different times, allowing multiple interference images to be captured on a single video frame. Changes in laser interference fringes due to an impulse discharge in air showed electron densities of about 2×1024 m−3 and perturbation in the neutral density expanding at speeds of about 103 m/s.
AB - An acousto-optic laser deflector was applied to laser interferometric measurement of impulse discharges in air as a high-speed shutter. Laser interference fringes were obtained at exposure times of about 1 µs. The deflector was also used for time-resolved imaging of laser interference fringes by using a sequence of high frequency signals with different frequencies to deflect the laser beam to different angles at different times, allowing multiple interference images to be captured on a single video frame. Changes in laser interference fringes due to an impulse discharge in air showed electron densities of about 2×1024 m−3 and perturbation in the neutral density expanding at speeds of about 103 m/s.
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U2 - 10.1541/ieejfms.124.56
DO - 10.1541/ieejfms.124.56
M3 - Article
AN - SCOPUS:85009628124
VL - 124
SP - 56
EP - 61
JO - IEEJ Transactions on Fundamentals and Materials
JF - IEEJ Transactions on Fundamentals and Materials
SN - 0385-4205
IS - 1
ER -