chanelink logo
CHANELINK
Español

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

707
2024-05-15 14:14:21
Ver traducción

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

Recomendaciones relacionadas

  • Implementation of 20W high-power fiber optic frequency comb by the Institute of Physics, Chinese Academy of Sciences

    High power optical frequency combs play a crucial role in nonlinear precision spectroscopy, extreme ultraviolet optical frequency comb generation, nuclear atomic clock research, and other fields. Fiber optic femtosecond lasers are the preferred solution for achieving high power optical frequency combs due to their simple structure, stable performance, and easy amplification.However, due to the una...

    2023-10-11
    Ver traducción

  • Is CTC technology in the booming new energy industry likely to disrupt the fiber laser industry?

    Recently, the term CTC technology has become a hot topic in the new energy vehicle industry. During the relatively slow period of electrochemical innovation, this structural innovation effectively helped the new energy industry reduce costs and increase efficiency, while also increasing the range of new energy vehicles to a certain extent. However, recently the author learned that the concept of C...

    2023-09-18
    Ver traducción

  • LightSolver announces the launch of the LPU100 laser computing system

    LightSolver, a laser based computing company, announced that it is a breakthrough in quantum inspired high-performance computing.Its LPU100 system utilizes the power of 100 lasers to solve optimization problems, challenging the processing time of quantum and supercomputers. The laser array of LPU100 represents 100 continuous variables and can solve up to 120100 combinations of problems, enabling ...

    2024-03-22
    Ver traducción

  • Shanghai Institute of Optics and Mechanics proposes a new scheme of Er doped silicate fiber as an extended L-band broadband amplifier

    Recently, Hu Lili, a research group of the Advanced Laser and Optoelectronic Functional Materials Department of the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, proposed a new scheme based on field strength optimization of Er doped silicate fiber as an extended L-band broadband amplifier. Relevant research achievements were published in Optics Letters under the tit...

    2024-06-05
    Ver traducción

  • Application of Multipurpose Femtosecond Laser Interferometry in High Precision Silicon Nanostructures

    Researchers from the Laser Processing Group of the IO-CSIC Institute of Optics in Spain report on the application of multi-purpose femtosecond laser interference in high-precision silicon nanostructures. The related research was published in Optics&Laser Technology with the title "Versatile femtosecond laser interference pattern applied to high precision nanostructured of silicon".Highlights:...

    2024-07-10
    Ver traducción