• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
Wednesday, September 10, 2025
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News

See further: Scientists achieve single-photon imaging over 200km

Bioengineer by Bioengineer
April 5, 2021
in Science News
Reading Time: 2 mins read
0
IMAGE
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

IMAGE

Credit: LI Zhengping et al.

A research team led by Professor PAN Jianwei and Professor XU Feihu from University of Science and Technology of China achieved single-photon 3D imaging over 200 km using high-efficiency optical devices and a new noise-suppression technique, which is commented by the reviewer as an almost “heroic” attempt at single photon lidar imaging at very long distances.

Lidar imaging technology has enabled high precision 3D imaging of target scene in recent year. Single photon imaging lidar is an ideal technology for remote optical imaging with single-photon level sensitivity and picosecond resolution, yet its imaging range is strictly limited by the quadratically decreasing count of photons that echo back.

Researchers first optimized transceiver optics. The lidar system setup adopted a coaxial scanning design for the transmit and receive optical paths, which can align the transmitting and receiving spots more precisely and achieve higher-resolution imaging in comparison with tradition method.

To differentiate weak echo signal from strong background noise, the team developed a single-photon avalanche diode detector (SPAD) with a 19.3% detection efficiency and a low dark count rate (0.1kHz). Further, researchers coated telescope to achieve high transmission at 1550 nm. All these improvements achieved higher collection efficiency than before.

Researchers also adopted an efficient temporal filtering technique for noise suppression. The technique can reduce the total number of noise photon counts to be about 0.4 KHz, which is at least 50 times smaller than previous works.

Experiment results showed that the system can achieve accurate 3D imaging at up to 201.5 km with single-photon sensitivity.

This work could provide enhanced methods for low-power, single-photon lidar for high-resolution active imaging and sensing over long ranges and open up a new road for the application of long-range target recognition and earth observation.

###

Media Contact
Jane FAN Qiong
[email protected]

Related Journal Article

http://dx.doi.org/10.1364/OPTICA.408657

Tags: Chemistry/Physics/Materials SciencesComputer ScienceEarth ScienceOpticsResearch/DevelopmentTechnology/Engineering/Computer Science
Share12Tweet8Share2ShareShareShare2

Related Posts

Evaluating ‘Maze Out’: A Game for Eating Disorders

Evaluating ‘Maze Out’: A Game for Eating Disorders

September 10, 2025
Synergistic Natural Edible Coatings Enhance Guava Preservation

Synergistic Natural Edible Coatings Enhance Guava Preservation

September 10, 2025

Unraveling Sperm Movement: Discovery of Two Key Proteins Essential for Male Fertility

September 10, 2025

Silicic Acid Enhances Maize Growth Under Drought

September 10, 2025
Please login to join discussion

POPULAR NEWS

  • blank

    Breakthrough in Computer Hardware Advances Solves Complex Optimization Challenges

    151 shares
    Share 60 Tweet 38
  • New Drug Formulation Transforms Intravenous Treatments into Rapid Injections

    116 shares
    Share 46 Tweet 29
  • Physicists Develop Visible Time Crystal for the First Time

    53 shares
    Share 21 Tweet 13
  • First Confirmed Human Mpox Clade Ib Case China

    56 shares
    Share 22 Tweet 14

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Recent News

Evaluating ‘Maze Out’: A Game for Eating Disorders

Synergistic Natural Edible Coatings Enhance Guava Preservation

Unraveling Sperm Movement: Discovery of Two Key Proteins Essential for Male Fertility

  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

Bioengineer.org © Copyright 2023 All Rights Reserved.