title: High-resolution ghost imaging experiments with cosh-Gaussian modulated incoherent sources.
abstract: We experimentally demonstrate that ghost imaging (GI) quality can be significantly improved by modulating the incoherent Gaussian sources with hyperbolic cosine functions. In our experiments, a source with desired cosh-Gaussian intensity distribution can be generated by a programmable spatial light modulator, and is used in the GI setup to obtain high quality ghost images. The influences of the hyperbolic cosine parameter on the point-spread function and the GI quality have been investigated experimentally and interpreted theoretically. Our experimental results show that the resolution of ghost images can be obviously enhanced with cosh-Gaussian modulated incoherent sources. The kind of source-shaping technique proposed in this paper is a high-efficiency method to improve the GI quality and may be very useful for the GI applications.
authors.forename: Chunling
authors.initials: C
authors.lastname: Luo
authors.forename: Haihong
authors.initials: H
authors.lastname: Xu
authors.forename: Jing
authors.initials: J
authors.lastname: Cheng
mesh_terms: D016011:Normal Distribution; D061848:Optical Imaging / Q000379:methods*