Noise reduction and amplified reconstruction of a low-intensity static optical field by holography

Autor: Lee, Hee S., Will, David, Fenichel, Henry
Zdroj: Applied Optics; December 1991, Vol. 30 Issue: 35 p5147-5151, 5p
Abstrakt: A method for amplified reconstruction and noise reduction of a static low-intensity optical field by holography is suggested. The technique consists of a reduction of the reference beam intensity to that of the object field during the holographic exposure. The noise-reduced hologram obtained can then produce the amplified image with an increased reference beam. The technique is demonstrated by the detection of surface scratches on glass.
Databáze: Supplemental Index