抄録
Two-frequency interferometry for small displacement measurements is examined from a practical point of view. A laser beam that is modulated sinusoidally in intensity by an acousto-optic Bragg cell provides signal and reference optical waves to produce dynamic interference. The output signal of a photodetector receiving the interference is composed of optical homodyne and heterodyne components. The heterodyne component carries a vibrational displacement to be detected on its amplitude. A sinusoidal vibration amplitude is measured down to 0.5 nm.
| 本文言語 | English |
|---|---|
| ページ（範囲） | 25-29 |
| ページ数 | 5 |
| ジャーナル | Optics and Laser Technology |
| 巻 | 16 |
| 号 | 1 |
| DOI | |
| 出版ステータス | Published - 1984 2月 |
| 外部発表 | はい |
ASJC Scopus subject areas
- 電子材料、光学材料、および磁性材料
- 原子分子物理学および光学
- 電子工学および電気工学