Arithmetic with q-plates.

Applied optics

PubMedID: 28157915

Delaney S, Sánchez-López MM, Moreno I, Davis JA. Arithmetic with q-plates. Appl Opt. 2017;56(3):596-600.
In this work we show the capability to form various q-plate equivalent systems using combinations of commercially available q-plates. We show operations like changing the sign of the q-value, or the addition and subtraction of q-plates. These operations only require simple combinations of q-plates and half-wave plates. Experimental results are presented in all cases. Following this procedure, experimental testing of higher and negative q-valued devices can be carried out using commonly available q-valued devices.