Speckle suppression illuminator
作者： Gerard L. Rafanelli , Claudio G. Parazzoli
DOI:
关键词:
摘要: Disclosed is a method and apparatus for reducing or eliminating the speckle intensity distribution of an imaging and/or tracking system The benefits utilizing highly coherent source (12) as are well known. However, such provides which reduces effective resolution capability system. This invention takes beam light (14) impinges it into Raman cell (16) to obtain broad spectral bandwidth having additional side wavelengths other than original wavelength. In addition, this means improve quality all lines. Therefore, composite composed individual lines good generated. As result bandwidth, images formed from targets illuminated by substantially free variations.
lens.org 参考文章(8)
David M. Pepper, Ruth A. Mullen, Self-pumped, optical phase conjugation method and apparatus using pseudo-conjugator to produce retroreflected seed beam ,(1990)
Edouard F. da Silva, Paul A. Dhamelincourt, Michel M. Delhaye, Optical Raman microprobe with laser ,(1977)
Masahiko Kowaka, Yoshiho Amada, Osamu Wakabayashi, Laser wavelength control apparatus ,(1988)
Frederic L. Lizzi, Ernest J. Feleppa, Marek Elbaum, Frequency diversity for image enhancement ,(1983)
Charles N. Scully, Laser target speckle eliminator Air Force Interim Report. ,(1982)
Kantilal Jain, Carlton G. Willson, High resolution optical lithography method and apparatus having excimer laser light source and stimulated Raman shifting ,(1983)
Jonathan Briggs, Method and apparatus for enhanced detection of electromagnetic signals ,(1985)
Yutaka Ichihara, Illumination device using a laser ,(1987)