Highly compact nanosecond laser for space debris tracking

Zhenxu Bai, Hui Chen, Xiaoqiang Gao, Sensen Li, Yaoyao Qi, Zhenao Bai*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


This study demonstrated the use of a highly compact nanosecond laser system operating at 532 nm and producing a maximum output power of 70 W with a pulse width of 5 ns at 0.5 kHz, for space debris tracking. To improve the ranging accuracy while minimizing the influence of the pulse noise, a bidirectional Q-switch was adopted in the oscillator to generate a short pulse width with less tailing. The laser was applied for low-Earth-orbit space debris tracking, and space debris with the farthest distance of 1701.9 km at the minimum radar cross-section of 1 m2 could be detected with a ranging precision of up to 26.90 cm.

Original languageEnglish
Article number109470
Number of pages3
JournalOptical Materials
Publication statusPublished - 1 Dec 2019


  • Bidirectional Q-switch
  • Nanosecond
  • Solid-state laser
  • Space debris tracking


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