chanelink logo
CHANELINK
English

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

1183
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

  • IPG Q1 revenue of $252 million, co-founder and new CEO of Jiaobang

    Recently, IPG Photonics, a high-performance fiber laser supplier in the United States, released its first quarter financial report as of March 31, 2024.The financial report shows that IPG Photonics revenue in the first quarter was 252 million US dollars, a year-on-year decrease of 27%; The net profit was 19 million US dollars, a year-on-year decrease of 75%. The change in foreign exchange rate res...

    2024-05-07
    See translation

  • Snapmaker introduces new 20W and 40W laser modules

    Snapmaker has opened pre-orders for 20W and 40W laser modules, which are significant upgrades to the modules available on existing Snapmaker machines.Snapmaker says that with the 40W module installed, you will be able to cut 15 mm basswood plywood at a time at a speed of 20 mm/SEC. With 20W, you will cut 10mm at a rate of 10mm/SEC. That's a lot more than Artisan and Snapmaker 2.0 - both are comp...

    2023-08-04
    See translation

  • DustPhotonic is the first to develop an 800G silicon photonic chip

    Recently, DustPhotonics released a single chip 800G-DR8 silicon photonic chip for data center applications, which is an important milestone in practical photonics in data centers. The company claims that its single-chip solution provides high-performance and easy to implement solutions for system architects.DustPhotonics' 800G-DR8 photonic integrated circuit provides a single chip solution for fib...

    2023-10-13
    See translation

  • American FMCW LiDAR listed company Aeva receives $50 million investment

    Recently, American FMCW LiDAR listed company Aeva announced a strategic partnership with a technology subsidiary of a Fortune Global 500 company to jointly introduce Aeva's fourth generation 4D LiDAR into emerging industrial and consumer markets.According to the agreement, the tech giant will provide a strategic investment of approximately $50 million to Aeva through subscription of Aeva common st...

    05-22
    See translation

  • Eoptolink launches optical transceivers for immersion cooling

    Eoptolink Technology has expanded its product portfolio to meet the new market of optical transceiver modules operating in environments using immersion cooling.The Eoptolink EOLO-138HG-5H-SYMR is an optical transceiver for the 800G OSFP DR8, which can be completely immersed in a 2-phase liquid cooling environment. The EOLO-138HG-02-SYMR is an 800G OSFP DR8+. This transceiver has fiber optic tail f...

    2024-03-26
    See translation