chanelink logo
CHANELINK
Türkçe

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

718
2024-05-15 14:14:21
Çeviriyi gör

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

İlgili öneriler

  • Solar cell laser processing deserves attention

    Laser processing is a relatively emerging non-contact processing method that utilizes the high energy of a beam of light to interact with materials and instantly vaporize or change their properties to achieve the expected manufacturing effect. It has gradually been promoted and applied in China in the past 20 years. Due to the different types, pulse widths, and wavelengths of laser generators, the...

    2023-10-31
    Çeviriyi gör

  • The fiber laser system overcomes outdated issues through a PC based EtherCAT control platform

    In order to maintain relevance and success, companies with a long history must respect their past while not ignoring the future. This is the method adopted by Cincinnati Corporation (CI), a metal processing machinery manufacturer based in Harrison, Ohio, since its establishment in the late 1890s.The company is carefully considering technological changes. Incorrect selection of control hardware, ne...

    2024-05-25
    Çeviriyi gör

  • Composite two-dimensional materials for fiber lasers demonstrate the prospects of ultra fast optical applications

    The formation of dissipative solitons is influenced by various factors, such as spectral filtering effect and Kerr nonlinearity effect. This interaction leads to the possibility of mode locking on a large range of parameters, generating pulses with completely different types and evolution from conventional physical laws and optical properties, tolerating higher nonlinear effects, and effectively a...

    2023-09-21
    Çeviriyi gör

  • How to choose between continuous and pulsed fiber lasers?

    Fiber laser, with its simple structure, low cost, high electro-optical conversion efficiency, and good output effect, has been increasing in proportion in industrial lasers year by year. According to statistics, fiber lasers accounted for 52.7% of the industrial laser market in 2020.According to the characteristics of the output beam, fiber lasers can be classified into two categories: continuous ...

    2023-12-20
    Çeviriyi gör

  • Analysis of Optically Pumped Semiconductor Laser Technology for Promoting the Development of Life Sciences

    Optically Pumped Semiconductor Lasers technology has achieved great success in the market due to its various unique advantages, with over 100000 OPSL devices currently operating in the market. This article introduces the application and new developments of OPSL in the fields of flow cytometry and DNA sequencing.OPSL has the characteristics of flexible wavelength extension, adjustable power, compac...

    2024-02-01
    Çeviriyi gör