Hailong Zhou

TL;DR: In this article, the authors proposed an OAM complex spectrum analyzer that enables simultaneous measurements of the power and phase distributions of OAM modes by employing the rotational Doppler effect.

TL;DR: In this article, an OAM complex spectrum analyzer was proposed to measure the power and phase distribution of OAM modes simultaneously by employing rotational Doppler Effect (DoE).

TL;DR: In this paper, the authors present a theoretical model to sufficiently investigate the optical rotational Doppler effect based on modal expansion method and find that the frequency shift content is only determined by the surface of a spinning object and the reduced DoP shift is linear to the difference of mode index between input and output orbital angular momentum (OAM) light.

TL;DR: In this paper, a metal device containing circular slits was proposed to generate a terahertz (THz) orbital angular momentum beam with numerical simulations, and the estimation of the polarization extinction ratio was above 20 dB over the bandwidth ranging from 0.3 to 3 THz, and a mode purity of 1$ or $-$ 1 was close to 1 over a wide bandwidth range, except for the area near the deteriorated valley.

TL;DR: The major challenges faced by photonic neuromorphic computing are summarized, promising solutions and perspectives are proposed, and several optical neural computing architectures and algorithms are introduced.