With advantages of small size, light weight, flexible design, and easy mass production, micro-
optical components of hard materials have a wide range of potential applications in artificial …

Although the existence of photonic angular momentum is imbedded in Maxwell's equations,
the full picture of its intricate connections was slow to emerge. Early work on polarization …

We report the successful fabrication of high-aspect-ratio lithium niobate (LN) nanostructures
by using femtosecond-laser-assisted chemical etching. In this technique, a 1 kHz …

Lithium niobate (LN) crystal with anti‐reflective subwavelength structures (ASSs) has great
applications in high‐power tunable optical parametric oscillator (OPO) lasers. However, it is …

With the aim of improving the performance of diffraction gratings, a piezoelectric-driven
vibration-assisted UV nanoimprint method is proposed for use in the fabrication of diffraction …

Here, we report on the fabrication of cm-long microchannels in LiNbO_3 by selective etching
of femtosecond laser inscribed tracks using hydrofluoric acid. We achieved a 1? cm long …

Lithium niobate (LN) has remained at the forefront of academic research and industrial
applications due to its rich material properties, which include second-order nonlinear optic …

We report a micron-scale tailored waveguide-grating device designed for vortex laser
generation in the Tm: YLF crystal inscribed by femtosecond laser direct writing (FLDW). The …

In this work, we used femtosecond‐laser direct writing to fabricate two kinds of modified
structures with opposite refractive‐index changes to build fork‐grating configurations in z …

In this work, we propose a practical solution to visible vortex laser emission at 532 nm based
on second harmonic generation (SHG) in a well-designed waveguide-grating structure …