chanelink logo
CHANELINK
Polski

Beyond Limits: The Amazing Power of Water in Laser Development

121
2024-02-26 14:20:25
Zobacz tłumaczenie

Water helps to generate ultra continuous white lasers with an extremely wide wavelength range.
Researchers have made significant progress in creating ultra wideband white laser sources, which have a wide wavelength range from ultraviolet to far-infrared. These advanced lasers are used in various fields, including imaging, femtosecond chemistry, telecommunications, laser spectroscopy, sensing, and ultrafast science.


Intense white laser projects a brilliant rainbow
However, this pursuit faces challenges, especially in selecting suitable nonlinear media. Although traditional solid materials are efficient, they are susceptible to optical damage under peak power conditions. Although gas media have resistance to damage, they are usually inefficient and technically complex.

Innovative solutions using water as a nonlinear medium
Researchers from South China University of Technology have recently taken non-traditional measures to treat water as a nonlinear medium. Water is abundant and inexpensive, and can be protected from optical damage even under the influence of high-power lasers. As reported in the Journal of Advanced Photonics in the Golden Open Access journal, water induced spectral broadening involves enhanced self phase modulation and stimulated Raman scattering, resulting in a supercontinuum white laser with a bandwidth of 435nm and 10dB, covering an impressive range of 478-913nm.

Progress in Cooperation between Water and CPPLN
To further innovate, researchers combined water with chirped periodically polarized lithium niobate (CPPLN) crystals, which are known for their powerful second-order nonlinear power. This cooperative relationship not only expands the frequency range of supercontinuum white laser, but also flattens its output spectrum. According to Professor Zhi Yuan Li, the senior author of the study, "The cascaded water CPPLN module provides a long lifespan, high stability, and low cost technical route for achieving 'three high' white lasers with strong pulse energy, high spectral flatness, and ultra wide bandwidth."

The results of the water CPPLN cooperation are expected. The pulse energy of this ultra wideband ultra continuous spectrum light source is 0.6 mJ, with a 10 dB bandwidth spanning one octave (413-907nm), and it has potential in ultrafast spectroscopy and hyperspectral imaging. Zhi Yuan Li observed, "It provides high resolution of physical, chemical, and biological processes at extreme spectral bandwidths with high signal-to-noise ratio. It opens up an efficient pathway to create long-lived, highly stable, and cost-effective white light lasers with strong pulse energy, high spectral flatness, and ultra wideband, paving the way for new possibilities in scientific research and application."

Source: Sohu

Powiązane rekomendacje

  • A replica of an arcade made with a 3D printer in the 1970s

    A game museum has 3D printed a replica of a historic arcade computer space. The arcade museum in Stroud, Gloucestershire lacks the first commercial arcade video game. They collaborated with Heber company to create a real replica. Neil Thomas, the director of the arcade museum, said that because it is a replica, not an original, they are not "afraid" of letting people play with it.A spokesperson...

    2024-05-29
    Zobacz tłumaczenie

  • The University of California has developed a pioneering chip that can simultaneously carry lasers and photonic waveguides

    A team of computer and electrical engineers at UC Santa Barbara, in collaboration with several colleagues at Caltech and another colleague at Anello Photonics, has developed a first-of-its-kind chip that can carry both laser and photonic waveguides. In a paper published in the journal Nature, the team describes how they made the chip and how it worked during testing.With the advent of integrated c...

    2023-08-10
    Zobacz tłumaczenie

  • Scientists are using lasers to create lunar paving blocks

    Original Hal Bowman 9000 Scientific RazorThe 3 kW laser power output on a 45 mm laser spot consolidates the interlocking structure within the EAC-1A powder bed. Source: Jens Kinst, BAMBy using lasers to melt lunar soil into stronger layered materials, it is possible to build paved roads and landing pads on the moon, according to a concept validation study in a scientific report. Although these exp...

    2023-10-14
    Zobacz tłumaczenie

  • WVU engineers develop laser systems to protect space assets from the impact of Earth orbit debris

    The research from the University of West Virginia has been rewarded, as debris scattered in planetary orbits that pose a threat to spacecraft and satellites may be pushed away from potential collision paths by a coordinated space laser network.Hang Woon Lee, director of the Space Systems Operations Research Laboratory at the University of West Virginia, said that artificial debris dumps, including...

    2023-10-10
    Zobacz tłumaczenie

  • Changchun Institute of Optics and Mechanics has developed blue-green fluorescent transparent ceramics for laser lighting, laying a key fluorescence material foundation for full color laser lighting

    The project of the National Natural Science Foundation of China (Jilin Province) "Multicolor Transparent Silicate Garnet Fluorescent Ceramics for Laser Lighting" presided over by Zhang Jiahua, a researcher in the State Key Laboratory of Luminescence and Applications of Changchun Institute of Optics and Fine Mechanics, has made breakthrough progress, developed green fluorescent transparent ceramics...

    2023-09-26
    Zobacz tłumaczenie