chanelink logo
CHANELINK
English

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

1116
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

  • HSG Laser launches new generation laser solutions

    HSG Laser unveiled its next-generation laser cutting solutions—the GH V2.0 high-power flatbed system and TS2 intelligent tube cutting machine—at its Düsseldorf showroom, marking a major milestone in its European market expansion. (Image: HSG Laser)Attended by customers and partners from across the continent, the event featured live demonstrations of both systems and highlighted HSG’s growing i...

    06-27
    See translation

  • Mazak will push economical laser cutting processing equipment to Europe

    Recently, Yamazaki Mazak, a well-known Japanese machine tool manufacturer, announced that it will unveil its economic laser processing star Optiplex 3015 Ez for the first time in the European market at the upcoming 2024 EuroBLECH exhibition. This carefully crafted laser processing machine not only combines high-quality processing capabilities with affordable prices, but also aims to open the doo...

    2024-09-25
    See translation

  • HieFo launches high-power DFB laser chip to enter coherent optical transmission market

    Recently, HieFo, a leading enterprise in the field of optical communication, officially launched its HCL30 DFB laser chip, designed specifically to meet the stringent requirements of coherent optical transmission. This chip combines efficient optical output power with excellent narrow linewidth performance, providing multiple industry standard wavelength options in the O-band and C-band, bringin...

    2024-09-13
    See translation

  • Accelerating electrons by emitting laser light into a nanophotonic cavity

    The laser driven particle accelerator on silicon chips was created by two independent research groups. With further improvements, this dielectric laser accelerator can be used in medicine and industry, and even in high-energy particle physics experiments.Accelerating electrons to high energy is usually accomplished over long distances in large and expensive facilities. For example, the electron ac...

    2023-10-28
    See translation

  • The new chip opens the door to artificial intelligence computing at the speed of light

    Engineers at the University of Pennsylvania have developed a new chip that uses light waves instead of electricity to perform complex mathematical operations necessary for training artificial intelligence. This chip has the potential to fundamentally accelerate the processing speed of computers while reducing their energy consumption.The design of a silicon photonic chip was the first to combine t...

    2024-02-18
    See translation