Broadband spectral splitting of white light via 2D diffractive optical elements

Abstract

An effective way of increasing the efficiency of solar cells is to spectrally split sunlight into several frequenciesand absorb each frequency using appropriate photovoltaic materials. In this study, we establish a method to showspectral splitting of broadband solar light via iteratively optimized diffractive optical elements. We develop an algorithmin order to calculate 2D holographic patterns that focus two different frequencies to designated positions.