Computational imaging at THz frequencies

Abstract

In this contribution I will describe the design of an efficient THz spatial light modulator, one that can harness a new wave of computational imaging techniques for efficient imaging [1]. With excellent signal to noise and high resolution (down to ~λ/50), this approach can break the THz diffraction limit by almost two orders of magnitude [2]. I will then describe our most recent result in applying this new form of imaging to interrogate a wide variety of interesting systems including buried semiconductor structures [1], CVD grown graphene [3] and articular cartilage [4].

[1] R. I. Stantchev, et al., Sci. Adv. 2, 6,e1600190 (2016).
[2] R. I. Stantchev, et al., Optica 4,989 (2017)
[3] S.M.Hornett, et al., Nano Lett., 16 (11), 7019–7024 (2016).
[4] R. I. Stantchev, et al., Scientific Reports 8, 6924 (2018)