Size-Dependent UV-C Communication Performance of AlGaN Micro-LEDs and LEDs

Optimal LED size is an important topic for high-speed UV-C wireless communication but still lacks sufficient investigation. In this work, we study the size effect of UV-C LEDs based on the entire c…

Experimental Phase Stabilization of a 397-Channel Laser Beam Array Via Image …

A phase-locking module is firstly validated for coherent beam combining (CBC) systems of near 400 laser beams in dynamic noise environment. It is based on a 2-dimensional image processing in the ph…

Attention in Attention Networks for Person Retrieval

This paper generalizes the Attention in Attention (AiA) mechanism, in P. Fang et al., 2019 by employing explicit mapping in reproducing kernel Hilbert spaces to generate attention values of the inp…

AlGaN Ultraviolet Micro-LEDs

AlGaN-based UV LEDs have proven to have broad applications in many fields including sterilization, disinfection, purification, and phototherapy, but the performance still needs to be further improv…

High Power Narrow-Linewidth Fiber Laser Based on Double-Tapered Fiber

A homemade double-tapered Yb-doped fiber is employed in a high-power narrow-linewidth fiber amplifier to improve the thresholds of nonlinear effects and transverse mode instability (TMI) effect. A …

Spectral Model of High-Power Ytterbium-Raman Fiber Amplifiers

In this work, we establish a comprehensive spectral model to realize effective design of high-power ytterbium-Raman fiber amplifiers (YRFAs) employing different types of Raman-pump lasers, and prop…

Evolution of Relative Intensity Noise in High-Power Narrow-Linewidth Fiber La…

In this work, we carry out a systematic study on the evolution of relative intensity noise (RIN) in a high-power narrow-linewidth fiber laser system based on phase-modulated single-frequency seed l…

Higher-Order Airy Patterns and Their Application in Tailoring Orbital Angular…

Ionizing Radiation Effect upon Er/Yb Co-Doped Fibre Made by In-Situ Nano Solu…

An Experimental and Theoretical Investigation of a 2 μm Wavelength Low-Thres…

We present our results on an experimental and theoretical investigation into a glass microsphere laser emitting at 2 μm wavelength. First, we fabricated Ho 3+ -doped tellurite glass fiber and meas…