Deep-learning-based phase control method for tiled aperture coherent beam combining systems

Petawatt and exawatt class lasers worldwide

A virtual journal Review of Optics was launched by CLP

The virtual journal Review of Optics was launched by Chinese Laser Press (CLP)

Parametric Resonances in Nonlinear Plasmonics

Localized surface plasmon polaritons are characteristic modes that arise from the resonant interaction of photons with the free-charge oscillations in metallic particles. Plasmonic resonances have attracted great attention as a means to localize and enhance optical fields over subwavelength regions. Such unique properties have fostered the advent of the field of nonlinear plasmonics, relying on plasmonic field enhancement to boost otherwise weak nonlinear effects. One open challenge in nonlinear plasmonics is the selective optical excitation of high-order resonances, as those would offer higher quality factors and field confinement compared with the readily accessible dipolar modes. In addressing such issue, researchers at the University of Kansas (KU) have explored an uncharted path in nonlinear plasmonics: the parametric excitation and amplification of localized surface plasmon polaritons.

Improvement on refractive index sensing by exploiting the tapered two-mode fibers

Micro fibers are known as optical waveguides with diameters close to the wavelength of transmitted light. Owing to its large fractional evanescent fields, a micro fiber can guide light with enhanced light-material interaction, which makes it a versatile platform for optical sensing on micro/nanometer scale with special advantages including small footprint, fast response, and high spectral sensitivity. Refractive index (RI) sensing with micro fibers has been engaged in a wide range of applications especially in biochemical analysis, environmental monitoring, and industry process monitoring. In fact, the sensitivity to the surrounding refractive index in such fields often falls in the range of 10-4-10-5 refractive index unit (RIU) for instruments, which is a challenge to the conventional micro fibers.

Interference-enhanced optical magnetism in surface high-index resonators: a pathway toward high-performance ultracompact linear and nonlinear meta-optics

Natural materials generally show no magnetism at optical frequencies. With the advances made in the area of metamaterials/metasurfaces, which derive their optical properties from the engineered structure of their resonant building blocks, i.e., meta-atoms, the idea that the magnetic field of light could be manipulated has become a reality. Optical magnetism is not only associated with a variety of interesting phenomena, but also is of great importance to numerous applications. Both plasmonic and dielectric resonators with subwavelength dimensions have been used to realize magnetism in optics. Compared with plasmonic structures that are well-known to possess intrinsic Ohmic loss, dielectric meta-atoms are highly desirable because of their unique ability to manipulate light with extremely low loss. Accordingly, there has been an increasing interest directed towards dielectric meta-optics that exploit Mie resonances to enable unprecedented flexibility in producing optical magnetism.

Five Minutes Optics： Professor WANG Zhiming talks about laser-driven microfluidic pumps

Basic research and industrial applications in modern biomedicine, physics, Chemistry and other fields require manipulation of fluids or micro-and nano-particles. It is difficult to control the fluid by mechanical pump, such as microminiaturization, micromachining technology and flexible control. The control of fluid by laser has the characteristics of non-contact, precise and flexible control, so it has been widely concerned.

IEEE Officially launched WeChat payment and Alipay payment

IEEE has officially launched WeChat payment and Alipay payment.