Femtosecond laser direct writing is a powerful technique for fabricating micro‐nano devices
as it can modify the interior of transparent optical materials in a spatially selective manner …

The exciting properties of micro-and nano-patterned surfaces found in natural species hide
a virtually endless potential of technological ideas, opening new opportunities for innovation …

Polarization and geometric phase shaping via a space-variant anisotropy has attracted
considerable interest for fabrication of flat optical elements and generation of vector beams …

Geometric phase is a unifying and central concept in physics, including optics. As a matter of
fact, optics played a pivotal role from the inception of this new paradigm, as some of the first …

Over the past two decades, femtosecond laser-induced periodic structures (femtosecond-
LIPSs) have become ubiquitous in a variety of materials, including metals, semiconductors …

The demand for energy efficient data storage technologies with high capacity and long life
span is increasingly growing due to the explosion of digital information in modern society …

Abstract 20 years ago, volume nanogratings were discovered in silica glass upon ultrafast
laser irradiation. Since then, these extraordinary self-organised and birefringent structures …

In the digital era, the need for high‐density data storage techniques has become
increasingly imperative. To address this, the study has demonstrated a multi‐dimensional …

Since the second half of the 20th century, ideas to develop methods for the formation of
optical vortices (OVs) or OV beams–regions of circular motion of energy flow in an …

Single femtosecond laser beam induced nanograting structure in transparent media has
attracted extensive attention in many fields of science and technology in the past decades …