chanelink logo
CHANELINK
Türkçe

Scientists build high-power cladding-pumped Raman fiber laser in 1.2 μm band

896
2024-01-31 13:58:14
Çeviriyi gör

Laser sources operating in the 1.2 μm band have some unique applications in photodynamic therapy, biomedical diagnostics, and oxygen sensing. In addition, they can be used as pump sources for mid-infrared optical parameter generation and visible light generation through frequency doubling.

Laser generation in the 1.2 μm band has been achieved by different solid-state lasers, including semiconductor lasers, diamond Raman lasers, and fiber lasers. Among these three types, fiber lasers are an excellent choice for generating 1.2 μm band lasers due to their simple structure, good beam quality, and flexible operation.

Researchers led by Professor Pu Zhou from the National University of Defense Technology in China are interested in high-power fiber lasers in the 1.2μm band. Most of the current high-power fiber lasers are ytterbium-doped fiber lasers in the 1 μm band, and the maximum output of the 1.2 μm band is limited to 10 watts.

Their research, titled "High-Power Tunable Raman Fiber Laser in the 1.2 μm Band," was published in Frontiers in Optoelectronics.

Their idea is to use the stimulated Raman scattering effect in passive optical fibers to obtain high-power laser generation in the 1.2μm band. The stimulated Raman scattering effect is a third-order nonlinear effect that converts photons to longer wavelengths.

By exploiting the stimulated Raman scattering effect in phosphorus-doped optical fiber, the researchers converted the high-power ytterbium-doped fiber in the 1 μm band to the 1.2 μm band. A Raman signal with a power of 735.8 W was obtained at 1252.7 nm, which is the highest output power ever reported for a 1.2 μm band fiber laser.

Source: Laser Network


İlgili öneriler

  • Pressure sensing using dual color laser absorption spectroscopy

    The research team led by Professor Gao Xiaoming and Professor Liu Kun of the Chinese Academy of Sciences Hefei Institute of Physical Sciences recently designed a concentration independent pressure sensing technology for high-temperature combustion diagnosis. This method is based on dual color laser absorption spectroscopy.The results of this study have been published in Optics Letters.Aircraft eng...

    2024-03-09
    Çeviriyi gör

  • Laser beam combined with metal foam to produce the brightest X-ray

    According to the Physicists' Network, scientists from Lawrence Livermore National Laboratory (LLNL) in the United States ingeniously combined the high-power laser emitted by the National Ignition Facility (NIF) with the ultra light metal foam to create the brightest X-ray ever. These ultra bright high-energy X-rays play an important role in many research fields, including imaging of extremely dens...

    01-18
    Çeviriyi gör

  • Construction of Advanced New Laser Research Centers in American Universities

    The ATLAS R&D center is expected to be completed by mid-2026!A powerful new laser research facility located on the Foothills campus of Colorado State University will begin construction this month. The facility is planned to be put into use in mid-2026 and is the result of 40 years of laser development research at Colorado State University. It is a collaboration with the Fusion Energy Science P...

    2024-10-30
    Çeviriyi gör

  • Germany Developed Short Wave Green Laser Underwater Cutting Technology

    With the prominent energy issues in various countries around the world, the utilization and development of energy have become a hot topic, and the demand for renewable energy is constantly increasing. The existing underwater infrastructure is no longer sufficient and needs to be dismantled using appropriate modern technology. For example, in order to increase the power of offshore wind power plant...

    2023-09-18
    Çeviriyi gör

  • Skylark Lasers receives a new round of investment to drive international business growth

    Skylark Lasers is a designer and manufacturer of single frequency diode pumped solid-state (DPSS) lasers, headquartered in Edinburgh, Scotland. Recently, the company has received a new round of financing worth millions of pounds to drive international expansion and advance its product development roadmap.Led by long-term key investment partners at Par Equity and Scottish Enterprise, the investment...

    10-11
    Çeviriyi gör