Sunday 16 March 2025
Deep in the heart of a Russian research institute, scientists have made a breakthrough that could revolutionize our understanding of light and its relationship with matter. By creating a device that can generate deep ultraviolet optical vortices, researchers at the Joint Institute for Nuclear Research have taken a significant step towards harnessing the power of twisted light.
Optical vortices are a type of beam that has a spiral phase structure, giving it unique properties unlike traditional laser beams. When light is twisted in this way, it can carry orbital angular momentum – a property that has been shown to have potential applications in fields as diverse as telecommunications and medical imaging.
The challenge, however, lies in generating these vortices at shorter wavelengths, such as deep ultraviolet (DUV). This range of light is particularly useful for applications like particle manipulation and beam diagnostics, but it’s notoriously difficult to produce. That is until now.
Researchers have developed a novel diffractive optical element, known as a spiral zone plate, that can efficiently generate DUV optical vortices. The device consists of a complex pattern of transparent and non-transparent zones etched onto a substrate, which manipulates the light in such a way that it creates a twisted beam.
The team’s design is unique in its ability to produce high-quality vortex beams with a topological charge of l = 1 – a measure of the beam’s twistiness. This is achieved through the precise control of the zone plate’s geometry and the use of advanced lithographic techniques to create the necessary patterns.
To test their device, scientists used a laser driver at the JINR photoinjector to generate deep ultraviolet radiation, which was then passed through the spiral zone plate. The resulting beam was characterized using a high-resolution CCD camera, allowing researchers to visualize the spatial profiles of the vortex beams.
The results are impressive: the team was able to generate DUV optical vortices with efficiencies as high as 40%, far surpassing previous attempts in this wavelength range. This achievement paves the way for further research into the properties and applications of twisted light, including its potential use in advanced particle accelerators and quantum computing.
The implications of this breakthrough are significant. By harnessing the power of DUV optical vortices, scientists may be able to manipulate particles at the atomic level with unprecedented precision, leading to new discoveries in fields like medicine and materials science.
Cite this article: “Twisted Light Breakthrough: Generating Deep Ultraviolet Optical Vortices”, The Science Archive, 2025.
Optical Vortices, Deep Ultraviolet, Twisted Light, Joint Institute For Nuclear Research, Diffractive Optical Element, Spiral Zone Plate, Particle Manipulation, Beam Diagnostics, Topological Charge, Lithographic Techniques.
