chanelink logo
CHANELINK
English

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

1165
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

  • Micro ring resonators with enormous potential: hybrid devices significantly improve laser technology

    The team from the Photonic Systems Laboratory at the Federal Institute of Technology in Lausanne has developed a chip level laser source that can improve the performance of semiconductor lasers while generating shorter wavelengths.This groundbreaking work, led by Professor Camille Br è s and postdoctoral researcher Marco Clementi from the Federal Institute of Technology in Lausanne, represe...

    2023-12-11
    See translation

  • Lumiotive Launches New LiDAR Sensor LM10

    Recently, optical semiconductor developer Lumiotive, headquartered in Seattle, USA, launched a new LiDAR sensor LM10, which is its first fully produced product of light controlled metasurface (LCM) technology designed for digital beam steering.The developers stated that compared to mechanical systems, their digital beam steering method overcomes the limitations of traditional LiDAR sensors in term...

    2023-09-02
    See translation

  • University of Science and Technology of China Reveals High Precision Planarity Measurement of Cryogenic Arrays

    Professor Wang Jian, Deputy Chief Designer of the Low Temperature Array High Precision Planeness Survey Wide Area Sky Survey Telescope (WFST) announced by the University of Science and Technology of China, and teacher of the State Key Laboratory of Nuclear Detection and Nuclear Electronics, School of Physics, University of Science and Technology of China, is a research team of the Chinese Academy ...

    2023-08-14
    See translation

  • New machine learning algorithm accurately decodes molecular optical 'fingerprints'

    Recently, a research team from Rice University in the United States developed a new machine learning algorithm - Peak Sensitive Elastic Network Logistic Regression (PSE-LR). This algorithm is adept at interpreting the unique optical characteristics of molecules, materials, and disease biomarkers, which can help achieve faster and more accurate medical diagnosis and sample analysis. The relevant pa...

    05-09
    See translation

  • Afinum Management acquires significant stakes in two laser companies

    Recently, Afinum Management, a private equity firm based in Munich, Germany, has acquired a large stake in two laser companies, with the intention of opening up new laser markets by combining the strengths of three parties.According to media reports, the two companies are ARC Laser in Germany and GNS neo Laser in Israel, and Afinum has agreed with the founders of the two companies that the acquisi...

    2024-08-08
    See translation