title: Broadband angular filtering with a volume Bragg grating and a surface grating pair.
abstract: We propose and perform broadband angular filtering with the combination of a volume Bragg grating and a surface grating pair. The condition for broadband operation is discussed. Near-field modulation, contrast ratio, and power spectral density are used to evaluate the filtering performances in the spatial and frequency domain. Experimental results show that the bandwidth of the output beam through the grating combination is remarkably increased, and the medium and high frequencies are effectively eliminated.
authors.forename: Shang
authors.initials: S
authors.lastname: Wu
authors.forename: Xiao
authors.initials: X
authors.lastname: Yuan
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhang
authors.forename: Jiansheng
authors.initials: J
authors.lastname: Feng
authors.forename: Kuaisheng
authors.initials: K
authors.lastname: Zou
authors.forename: Guiju
authors.initials: G
authors.lastname: Zhang