chanelink logo
CHANELINK
Русский

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

348
2024-01-31 13:58:14
Посмотреть перевод

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


Связанные рекомендации

  • Researchers use machine learning to optimize high-power laser experiments

    High intensity and high repetition lasers rapidly and continuously emit powerful bursts of light, capable of emitting multiple times per second. Commercial fusion energy factories and advanced compact radiation sources are common examples of systems that rely on such laser systems. However, humans are a major limiting factor as their response time is insufficient to manage such rapid shooting syst...

    2024-05-24
    Посмотреть перевод

  • Scientists from the SLAC National Accelerator Laboratory in the United States have launched the world's most powerful X-ray laser

    Scientists at the SLAC National Accelerator Laboratory have launched the world's most powerful X-ray laser, which will be used for in-depth atomic and molecular research.It is a significant upgrade to its predecessor, as its brightness has increased by 10000 times.The upgraded laser facility also uses superconducting accelerator components, allowing it to operate at low temperatures near absolute ...

    2023-11-17
    Посмотреть перевод

  • Uncovering the Secrets of Nature: A New Generation of X-ray Lasers Reveals the Mystery of Atoms

    As a breakthrough leap in scientific exploration, the new generation of powerful X-ray lasers is now targeting the fastest and most basic processes in nature. Their mission: to uncover the complex atomic arrangement that drives these phenomena, providing unprecedented insights into chemical reactions, electronic behavior in materials, and the mysteries of the natural world.Unlocking the precise me...

    2023-09-25
    Посмотреть перевод

  • Beyond Limits: The Amazing Power of Water in Laser Development

    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 u...

    2024-02-26
    Посмотреть перевод

  • $75 million, this laser equipment manufacturer will be acquired

    Rocket Lab USA continues its path of vertical integration and has signed an exclusive but non binding agreement with MynaricAG, a German laser communication terminal (LCT) supplier and Rocket Lab supplier, to acquire the company for $75 million in cash or stock.If Mynaric achieves its revenue target, it will pay an additional revenue of up to $75 million. This acquisition depends on whether Myna...

    03-25
    Посмотреть перевод