Ultrashort laser pulses have revolutionized laser-matter interaction because they can
deposit energy at extremely small scales. High-speed and controlled nanostructuring has …

Structured light is desired in the micromachining of various materials. As the latest ultrashort
laser sources increase the average power by increasing the repetition rate, the efficiency of …

The precision glass micromachining technology employing ultrashort laser pulses has
reached a state of maturity. This technology enables the precise drilling, cutting, or ablation …

Beams exhibiting long focal lines and small focal spot sizes are desired in a variety of
applications and are called optical needles, with Bessel beams being a common example …

We propose a method for creating parallel Bessel-like vortical optical needles with an
arbitrary axial intensity distribution via the superposition of different cone-angle Bessel …

In this work, we present efficient generation of a high-quality vector Bessel beam using an S-
wave plate (radial/azimuth polarization converter) together with an ordinary glass axicon …

Non-diffracting beams have contributed greatly to recent developments in high power
applications such as laser micromachining. Well known for their elongated focal region (also …

In this work we demonstrate a tunable liquid–crystal element of linear phase profile along
the radial coordinate. In combination with a regular refractive axicon, it behaves as an …

Optical Bessel beams are used in numerous applications like fluorescence microscopy,
material processing and optical trap**. These applications require Bessel beams having a …

Based on the original concept of optical frozen waves—one-dimensional structured threads
of light constructed from Bessel beams—an approach to construct longitudinally structured …