Highly confining waveguides (Δne>0.1) without a degraded nonlinear coefficient and low propagation losses have been fabricated in lithium niobate (LN) by a new process that we called high vacuum vapor-phase proton exchange (HiVac-

The famous demonstration of optical rogue waves (RWs), a powerful tool to reveal the fundamental physics in different laser scenarios, opened a flourishing time for temporal statistics. Random fiber laser (RFL) has likewise attrac

We demonstrate for the first time to our knowledge the use of Fe3O4 nanoparticles for Q-switching a tunable mid-infrared (Mid-IR) Dy3+-doped ZBLAN fiber laser around 3 μm. The Q-switcher was fabricated by depositing the prepared F

Metasurfaces have been used to realize optical functions such as focusing and beam steering. They use subwavelength nanostructures to control the local amplitude and phase of light. Here we show that such control could also enable

The mid-infrared spectrum can be recorded from almost any material, making mid-infrared spectroscopy an extremely important and widely used sample characterization and analysis technique. However, sensitive photoconductive detecto

A multifunctional photo-thermal therapeutic nano-platform Y2O3: Nd3+/Yb3+/Er3+@SiO2@Cu2S (YR-Si-Cu2S) was designed through a core–shell structure, expressing the function of bio-tissue imaging, real-time temperature detection, and

Bipolar phototransistors have higher optical responsivity than photodiodes and play an important role in the field of photoelectric conversion. Two-dimensional materials offer a good optical responsivity and have the potential adv

We present, to the best of our knowledge, the first implementation of full-field quantum optical coherence tomography (FF-QOCT). In our system, we are able to obtain full three-dimensional (3D) information about the internal struc

Diverse ultrafast dynamics have been reported on different graphene prepared by different methods. Chemical-vapor-deposited (CVD) growth is regarded as a very promising method for highly efficient production of graphene. However,

While the performance of mode-locked fiber lasers has been improved significantly, the limited gain bandwidth restricts them from generating ultrashort pulses approaching a few cycles or even shorter. Here we present a novel metho

The year 2019 marks the 10th anniversary of the first report of ultrafast fiber laser mode-locked by graphene. This result has had an important impact on ultrafast laser optics and continues to offer new horizons. Herein, we mainl

The collective oscillation of electrons located in the conduction band of metal nanostructures being still energized, with the energy up to the bulk plasmon frequency, are called nonequilibrium hot electrons. It can lead to the st