2019年2月
Determination of Phase Shift by Digital Holography
Applied Mechanics and Materials
- ,
- ,
- ,
- 巻
- 888
- 号
- 開始ページ
- 43
- 終了ページ
- 46
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.4028/www.scientific.net/amm.888.43
- 出版者・発行元
- Trans Tech Publications, Ltd.
In phase shifting interferometry phase shift is applied by various ways, but applying it with high accuracy, especially by LD current modulation, is not easy. In order to determine the accurate phase shift a new method has been proposed that the value of LD current corresponding to π/2 phase shift can be determined by phase shifting digital holography. The measured data of standard in surface shape measurement were used for calibration, and the obtained value was confirmed to cause noise reduction and improvement of holographic reconstructed images in digital holography.
- リンク情報
- ID情報
-
- DOI : 10.4028/www.scientific.net/amm.888.43
- eISSN : 1662-7482