chanelink logo
CHANELINK
English

Fiber laser array for single pixel imaging is expected to achieve remote detection

1178
2024-05-15 14:14:21
See translation

Single pixel imaging (SPI) is a novel computational imaging technique that has been widely studied in recent years. This technology only uses single pixel detectors without spatial resolution to obtain spatial information of targets.

It has unique advantages and compensates for the shortcomings of traditional imaging technologies based on array detectors, such as relatively immature or expensive array detectors in remote sensing and non visible light imaging.

The imaging speed of SPI is always limited by the refresh rate of the spatial light modulator. For example, a typical digital micro mirror device (DMD) has a maximum refresh rate of 22kHz in binary mode. This limitation makes the implementation of real-time SPI difficult.

Researchers led by Professor Han Kai from the University of National Defense Technology of China (NUDT) are interested in single pixel imaging and fiber laser arrays. They proposed an effective SPI scheme using a phased fiber laser array and an untrained deep neural network.

Their research on efficient single pixel imaging based on compact fiber laser arrays and untrained neural networks is published in Frontiers of Optoelectronics.

Fiber lasers are arranged in a compact hexagonal structure and coherently combined to generate an illumination light field. By utilizing high-speed electro-optic modulators in each individual fiber laser module, randomly modulated fiber laser arrays can quickly project speckle onto objects of interest.

In addition, incorporating untrained deep neural networks into the image reconstruction process to improve the quality of reconstructed images.
Given its high transmission power (~kW) and potential for fast modulation (~MHz), researchers predict that the SPI scheme is expected to be applied in remote sensing and object detection.

Source: Laser Net

Related Recommendations

  • Innovative laser based rain enhancement project launched by UAEREP and DERC teams

    Recently, the UAE Rainfall Enhancement Scientific Research Program launched a groundbreaking project with Dr. Guillaume Matras and his team from the Directional Energy Research Center of the Institute of Technology Innovation, aiming to address the challenge of global water shortage through advanced technology. This collaboration marks an important milestone in the field of rainfall enhancement sc...

    2024-03-02
    See translation

  • Hexconn announces the launch of a new modular 3D laser scanner designed specifically for large-scale surface inspection

    The new Absolute Scanner AS1-XL adopts the same "Shine" technology as its flagship product Absolute Scanner AS1, allowing it to collect clean 3D data from the most challenging surface types at a very high speed.The new scanner has a wider scanning line and is designed specifically for inspecting large surfaces and deep cavities in inspection applications such as aerospace panels, ship propellers, ...

    2023-09-27
    See translation

  • NASA will demonstrate laser communications from the space station

    NASA's ILLUMA-T payload communicates with the LCRD via laser signals.NASA uses the International Space Station, a spacecraft the size of a football field orbiting the Earth, to learn more about living and working in space. For more than 20 years, the space station has provided a unique platform for investigation and research in the fields of biology, technology, agriculture and more. It is home to...

    2023-09-02
    See translation

  • Fulu and Longview begin design work on laser melting devices

    Longview Fusion Energy Systems and Fluor have taken another step towards commercialization of laser fusion power plants.According to the memorandum of understanding signed by the two companies, Fulu will design the factory for Longview Fusion Energy Systems. The two companies collaborated and signed a memorandum of understanding in 2023 to leverage Fulu's experience in developing and constructing ...

    2024-03-13
    See translation

  • NASA Completely Transforms Laser Communication and Space Weather Research

    NASA is a pioneer in space research, once again attracting the attention of the world with fascinating insights. In a recent press release, NASA announced plans to test revolutionary laser communication systems and study the interaction between Earth and space weather.A Great Leap in Space Communication: ILLUMA-TThe SpaceX 29 mission, scheduled for November 5th, will conduct research and technical...

    2023-10-23
    See translation