A scheme for recording a fast process at nanosecond scale by using digital holographic interferometry with continuous wave laser. (April 2015)

• Record Type: Journal Article
• Authors: Wang, Jun; Zhao, Jianlin; Di, Jianglei; Jiang, Biqiang
• Is Part Of: Optics and lasers in engineering. Volume 67(2015)
• Page Start: 17
• Page End: 21
• Publication Date: 2015-04
• Subjects: Digital holographic interferometry -- Fast process at nanosecond -- Acousto-optical modulator -- Angular multiplexing technique; Lasers in engineering -- Periodicals; Optical measurements -- Periodicals; Optics -- Periodicals; Lasers en ingénierie -- Périodiques; Mesures optiques -- Périodiques; Optique -- Périodiques; 621.36605
• DOI: 10.1016/j.optlaseng.2014.10.008
• Languages: English
• ISSNs: 0143-8166

Abstract

Abstract: A scheme for recording fast process at nanosecond scale by using digital holographic interferometry with continuous wave (CW) laser is described and demonstrated experimentally, which employs delayed-time fibers and angular multiplexing technique and can realize the variable temporal resolution at nanosecond scale and different measured depths of object field at certain temporal resolution. The actual delay-time is controlled by two delayed-time fibers with different lengths. The object field information in two different states can be simultaneously recorded in a composite hologram. This scheme is also suitable for recording fast process at picosecond scale, by using an electro-optic modulator. Highlights: The variable temporal resolution at nanosecond scale and different measured depths of object field at certain temporal resolution can be realized. The actual delay-time is controlled by two delayed-time fibers with different lengths. The experimental setup is also suitable for recording fast process at picosecond scale, by using electro-optical modulator.