title: Demonstration of a PDMS based hybrid grating and Fresnel lens (G-Fresnel) device.
abstract: A hybrid device that we term G-Fresnel (i.e., grating and Fresnel) is demonstrated. It fuses the functions of a grating and a Fresnel lens into a single device. We have fabricated the G-Fresnel device by using polydimethylsiloxane (PDMS) based soft lithography. Three-dimensional surface profilometry has been performed to examine the device quality. We have also conducted optical characterizations to confirm its dual focusing and dispersing properties. The G-Fresnel can be useful for the development of miniature optical spectrometers as well as emerging optofluidic applications.
authors.affiliation: The Pennsylvania State University, Department of Electrical Engineering, University Park, Pennsylvania 16802, USA.
authors.forename: Chuan
authors.initials: C
authors.lastname: Yang
authors.forename: Kebin
authors.initials: K
authors.lastname: Shi
authors.forename: Perry
authors.initials: P
authors.lastname: Edwards
authors.forename: Zhiwen
authors.initials: Z
authors.lastname: Liu