Nederlands

Lithuanian and Japanese researchers develop silver nanolaser

666
2024-12-24 14:21:41
Bekijk vertaling

Recently, researchers from Kaunas University of Technology (KTU) in Lithuania and the Tsukuba National Institute of Materials Science in Ibaraki, Japan, have collaborated to successfully develop a new type of nanolaser based on silver nanocubes.

Although its structure is small and can only be observed through high-power microscopes, its potential application prospects are broad, and the research team is confident in this.

This nanolaser has broad potential applications in early medical diagnosis, data communication, and security technology. At the same time, it is also expected to become an important tool for studying the interaction between light and matter. The amplification and generation of laser light vary depending on the application, determining the color of radiation and the quality of the laser beam.

According to Juod NAS from KTU, a co-author of the invention, "Nanolasers use structures that are one million times smaller than millimeters to generate and amplify light, and their laser radiation is generated in extremely small volumes of materials.

Although research and development of nanolasers have been ongoing for some time, the versions developed by KTU and its Japanese partners have unique manufacturing processes. They used silver nanocubes arranged neatly on the surface and filled with optically active materials to create the mechanisms required for amplifying light and generating laser effects.

As extremely small single crystal silver particles, silver nanocubes possess excellent optical properties and are the core components of our nanolaser, "said Juod NAS, a researcher at KTU Institute of Materials Science.

These nanocubes were synthesized using a unique process invented by KTU partners in Japan, ensuring their precise shape and quality. Subsequently, using nanoparticle self-assembly technology, these cubes were arranged into a two-dimensional structure. During this process, particles naturally arrange from the liquid medium onto the pre designed template.

When the template parameters match the optical properties of the nanocubes, a unique phenomenon called surface lattice resonance occurs, effectively generating light in the optically active medium.

Unlike traditional lasers that generate this phenomenon using mirrors, the KTU team's nanolaser utilizes a surface with nanoparticles. When silver nanocubes are arranged in a periodic pattern, light is captured by them. This process is similar to the mirror hall of an amusement park, but here the mirror is a nanocube and the 'visitor' is light, "Juod NAS metaphorically said.

These captured lights accumulate continuously until they eventually cross the energy threshold of stimulated radiation, producing a strong beam of light with a specific color and direction. The term laser is an abbreviation for stimulated emission of light, which describes this process.

By using high-quality and easily producible silver nanocubes, this laser can operate at record low energy, providing the possibility for large-scale production. Juod NAS pointed out that "chemically synthesized silver nanocubes can be produced in large quantities, and their high quality allows us to use nanoparticle self-assembly technology. Even if the arrangement is not perfect, their properties can compensate for this deficiency.

However, in the early stages of the project, although the simplicity of the method should have been a concern, Lithuanian research funding agencies were skeptical. Some skeptics question whether our simple method can create sufficiently high-quality nanolaser structures, "said Professor Sigitas Tamulevicius from KTU Institute of Materials Science.

Nevertheless, the KTU team firmly believes in the quality of their nanolaser and has successfully secured funding from an international organization. Juod NAS explained, "After extensive work and experimentation, we have demonstrated that using high-quality nanoparticles can achieve effective results even if the array is not perfect.

Source: OFweek

Gerelateerde aanbevelingen
  • The Science Island team has made breakthroughs in high pulse energy mid infrared fiber transmission

    Recently, the Jiang Haihe Research Group of the Health Institute of the Chinese Academy of Sciences Hefei Institute of Materia Medica made important progress in the research of the high-energy pulsed laser transmission system in the mid infrared band, and designed a 78 μ The 6-hole microstructure anti resonant hollow core fiber (AR-HCF) with a larger core diameter achieved efficient transmissio...

    2024-03-23
    Bekijk vertaling
  • Focused Energy purchases two world-class high-energy lasers

    Recently, Focused Energy, a well-known foreign fusion energy startup, announced that it has officially signed an agreement to purchase two of the world's top high-energy lasers. These two large lasers will be deployed in the company's upcoming factory in the San Francisco Bay Area in the next two years.Scott Mercer, CEO of Focused Energy, stated, "These lasers are currently the highest average pow...

    2024-12-25
    Bekijk vertaling
  • Trumpf's annual sales decreased by 17% compared to the previous year to 4.3 billion euros

    High-tech and industrial laser company Trumpf has reported rather negative preliminary trading figures for the fiscal year (FY) 2024-2025, with CEO Nicola Leibinger-Kammüller stating that “the lowest point has been reached.”The Ditzingen, Germany-based company stated that it had ended the latest fiscal year “as expected – with a decline in sales and order intake.” According to preliminary calcul...

    07-25
    Bekijk vertaling
  • Progress in the research and development of high-performance electrically pumped topology lasers in semiconductor manufacturing

    Topological laser (TL) is an ideal light source for future new optoelectronic integrated chips, designed and manufactured using topological optics principles to obtain robust single-mode lasers. Electrically pumped topology lasers have become a research hotspot due to their small size and ease of integration, but topology lasers based on electrical injection are still in the early stages of resear...

    2024-07-11
    Bekijk vertaling
  • The new method can maintain beam quality while significantly improving the power of fiber lasers

    The new discovery by optical scientists has brought new vitality to fiber lasers. This innovative method significantly improves the power of lasers without reducing beam quality, and will become an important defense technology for future low-cost drones and remote sensing.The research teams from the University of South Australia, the University of Adelaide, and Yale University have demonstrated ne...

    2023-12-22
    Bekijk vertaling