chanelink logo
CHANELINK
Tiếng Việt

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

82
2024-01-31 13:58:14
Xem bản dịch

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


Đề xuất liên quan

  • The green and blue laser diode series provides higher beam quality

    Rutronik has expanded its optoelectronic product portfolio by introducing green and blue laser diodes packaged in metal cans TO38 and TO56 using AM OSRAM. They leave a deep impression with improved beam quality and stricter electro-optic tolerances. The power level of the laser diode ranges from 10mW to 100mW. Diodes such as PLT3 520FB and PLT5 450GB are now available on the market.The flexibility...

    2024-01-31
    Xem bản dịch

  • Light Adv. Manuf. | Laser Direct Writing Assists Perovskite Optoelectronic Applications

    IntroductionMetal halide perovskites have excellent optoelectronic properties and have become the undisputed "star" materials in the semiconductor field, attracting great attention from both academia and industry. With a large amount of research investment, the application of perovskite covers various optical and optoelectronic fields such as single photon sources, micro nano lasers, photodetector...

    2024-03-25
    Xem bản dịch

  • Heavyweight Natuer: New progress in the efficiency of perovskite battery modules! Professor Zhang Xiaohong from Suzhou University, an alliance unit, issued a document

    Recently, Professor Zhang Xiaohong and Professor Peng Jun from the Functional Nanomaterials and Soft Materials Research Institute (FUNSOM) of Suzhou University, along with Professor Mohammad Khaja Nazeeruddin, Professor Paul J. Dyson, Professor Zhaofu Fei, and Professor Ding Yong from North China Electric Power University, collaborated to publish their research findings on Dopant additive synergy ...

    2024-04-19
    Xem bản dịch

  • Fujitsu collaborates to research and develop multi band wavelength fiber optic transmission technology

    Recently, Fujitsu and KDDI research company have successfully developed a high-capacity multi band wavelength multiplexing transmission technology using installed optical fibers.The new technology of the two companies can transmit wavelengths beyond the C-band by using batch wavelength conversion and multi band amplification technology.Expanding transmission capacity in remote areasTwo companies h...

    2023-12-05
    Xem bản dịch

  • Panasonic has announced the launch of two new laser projectors

    Panasonic announced the launch of two new 1-Chip 4K DL laser projectors, the PT-REQ15 projector offering 15,000 lumens of brightness, while its counterpart, the PT-REZ15, offers 15,000 lumens of WUXGA resolution.The REQ15 uses Panasonic's Quad Pixel Drive, a two-axis pixel shift technology, to reproduce 4K images. It is capable of projecting 2K/240Hz content on multiple edge hybrid screens with a ...

    2023-09-07
    Xem bản dịch