chanelink logo
CHANELINK
Deutsch

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

882
2024-05-15 14:14:21
Übersetzung anzeigen

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

Ähnliche Empfehlungen

  • BluGlass received its first order α GaN DFB laser

    Global semiconductor developer BluGlass Limited has received its first α Purchase order for gallium nitride distributed feedback laser.This client is a pioneer in photon and fiber laser technology and will use BluGlass's blue prototype DFB laser to develop cutting-edge defense, aviation, and scientific applications.Quantum sensing, navigation, and computing applications are driving a huge de...

    2024-01-10
    Übersetzung anzeigen

  • Gas reduction technology of fiber laser helps to improve the cutting quality of low-carbon steel

    The Mitsubishi GX-F Advanced series of artificial intelligence enabled fiber lasers now use patented gas and burr reduction technology to help improve cutting quality while reducing gas consumption when cutting low-carbon steel.Mitsubishi Laser's proprietary Agr Mix nozzle technology does not require an external mixing tank or high-pressure oxygen. The combination of low-pressure air and nitrogen ...

    2024-02-14
    Übersetzung anzeigen

  • 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
    Übersetzung anzeigen

  • 3D printed chocolate: a delicious fusion of innovation and sustainable development

    In the era of sustainable development and cutting-edge technology, the integration of 3D printing and culinary art is not only an innovation, but also a proof of human creativity. Imagine in such a world, your desserts are not just coming out of the kitchen, but carefully designed and printed layer by layer. This is not a glimpse of the distant future, but the reality of today, as developers have ...

    2024-02-19
    Übersetzung anzeigen

  • How to precisely control the cavity length of gallium nitride based vertical cavity surface emitting lasers?

    Gallium nitride (GaN) vertical cavity surface emitting laser (VCSEL) is a semiconductor laser diode with broad application prospects in various fields such as adaptive headlights, retinal scanning displays, nursing point testing systems, and high-speed visible light communication systems. Their high efficiency and low manufacturing costs make them particularly attractive in these applications.Gall...

    2024-06-12
    Übersetzung anzeigen