High-performance optical retarders based on all-dielectric immersion nanogratings.
High-performance true zero-order optical retarders were realized based on all-dielectric immersion nanogratings. All-dielectric nanolaminate materials, deposited by atomic layer deposition, were utilized to fill the trenches of the nanogratings to form immersion nanogratings. The refractive index of the nanolaminate material can be dialed and controlled precisely by controlling the ratio of the two compositions forming the nanolaminate material. This significantly improves the design and process windows for realizing precise optical retarders, particularly very-low-phase retarders. Three 100-mm-diameter very-low-phase retarders with highly precise and uniform phase retardance and very high transmittance were realized by use of the all-dielectric immersion grating design and an atomic layer deposition technique.
Wang
Jian Jim
JJ
NanoOpto Corporation, 1600 Cottontail Lane, Somerset, New Jersey 08873, USA.
Deng
Xuegong
X
Varghese
Ron
R
Nikolov
Anguel
A
Sciortino
Paul
P
Liu
Feng
F
Chen
Lei
L