NDLI: Evolution of low-frequency noise passing through a spatial filter in a high power laser system

Content Provider	Springer Nature Link
Author	Sun, PingPing Liu, DeAn Zhang, YanLi Li, XiaoYan Zhang, Yan Zhu, JianQiang
Copyright Year	2011
Abstract	The theoretical model of spatial noise passing through a spatial filter is established in high power laser system under the small signal approximation. The transmission characteristic for a noise signal passing through spatial filters with different magnifications is analyzed by numerical simulation, according to the actual structure of the high power laser system. The results show that the spatial modulation period of low-frequency noise getting through the pinhole will be proportional to the magnification of the spatial filter. When the magnification is less than 1, the safe low-frequency noise will be extruded into the high-frequency region, which is the fast increasing part, and finally develops into the most dangerous part which can damage the optical devices. The conclusion of this research improves the relay imaging theory of a spatial filter and provides an important theoretical basis for a general design of high power laser systems.
Starting Page	411
Ending Page	415
Page Count	5
File Format	PDF
ISSN	16747348
Journal	Science in China Series G
Volume Number	54
Issue Number	3
e-ISSN	18691927
Language	English
Publisher	SP Science China Press
Publisher Date	2011-01-27
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	high power laser spatial filter spatial modulation frequency modulation contrast ratio Physics Classical Continuum Physics Astronomy, Observations and Techniques
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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