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Generation of square-wave pulse bunches in gain-switched Tm-doped fiber linear cavity laser.

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Title: Generation of square-wave pulse bunches in gain-switched Tm-doped fiber linear cavity laser.
Authors: Zhou, Cheng1 ss_zhouc@ujn.edu.cn, He, Xin-yue1
Source: Journal of Russian Laser Research. Jun2026, Vol. 47 Issue 3, p287-296. 10p.
Subjects: Q-switched lasers, Square waves, Electromagnetic waves, Fiber lasers, Lasers, Linear statistical models, Laser pulses, Molybdenum disulfide, Amplitude estimation, Optical modulation
Abstract: We propose a method for generating square-wave pulse bunches using combined passively Q‑switched and gain-switched techniques. For a single pulse bunch, there are 4 square-wave pulses when the pump power of the LD is 3600 mW and the parameters of the modulation signal are the duty cycle of 50%, the voltage amplitude of 10 V, and the modulation frequency of 1.3 kHz, respectively. The number of square-wave pulses in a pulse bunch increases with increasing LD pump power and modulation duty cycle, but decreases as the modulation frequency increases, and is almost unaffected by the modulation voltage amplitude. Through optimizing the pump parameters, we obtained a pulse bunch with 28 square-wave pulses at the pump power of 4120 mW, the duty cycle of 50%, the voltage amplitude of 10 V, the modulation frequency of 0.9 kHz. In addition, the laser output power, repetition rate, pulse duration, pulse energy and peak power of the square-wave pulses also fluctuate with the change of the LD pump power and these parameters of the modulation. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Russian Laser Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 195094580
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Generation of square-wave pulse bunches in gain-switched Tm-doped fiber linear cavity laser.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Zhou%2C+Cheng%22">Zhou, Cheng</searchLink><relatesTo>1</relatesTo><i> ss_zhouc@ujn.edu.cn</i><br /><searchLink fieldCode="AR" term="%22He%2C+Xin-yue%22">He, Xin-yue</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Russian+Laser+Research%22">Journal of Russian Laser Research</searchLink>. Jun2026, Vol. 47 Issue 3, p287-296. 10p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Q-switched+lasers%22">Q-switched lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Square+waves%22">Square waves</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+waves%22">Electromagnetic waves</searchLink><br /><searchLink fieldCode="DE" term="%22Fiber+lasers%22">Fiber lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Lasers%22">Lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Linear+statistical+models%22">Linear statistical models</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+pulses%22">Laser pulses</searchLink><br /><searchLink fieldCode="DE" term="%22Molybdenum+disulfide%22">Molybdenum disulfide</searchLink><br /><searchLink fieldCode="DE" term="%22Amplitude+estimation%22">Amplitude estimation</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+modulation%22">Optical modulation</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: We propose a method for generating square-wave pulse bunches using combined passively Q‑switched and gain-switched techniques. For a single pulse bunch, there are 4 square-wave pulses when the pump power of the LD is 3600 mW and the parameters of the modulation signal are the duty cycle of 50%, the voltage amplitude of 10 V, and the modulation frequency of 1.3 kHz, respectively. The number of square-wave pulses in a pulse bunch increases with increasing LD pump power and modulation duty cycle, but decreases as the modulation frequency increases, and is almost unaffected by the modulation voltage amplitude. Through optimizing the pump parameters, we obtained a pulse bunch with 28 square-wave pulses at the pump power of 4120 mW, the duty cycle of 50%, the voltage amplitude of 10 V, the modulation frequency of 0.9 kHz. In addition, the laser output power, repetition rate, pulse duration, pulse energy and peak power of the square-wave pulses also fluctuate with the change of the LD pump power and these parameters of the modulation. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Russian Laser Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s10946-026-10301-9
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 287
    Subjects:
      – SubjectFull: Q-switched lasers
        Type: general
      – SubjectFull: Square waves
        Type: general
      – SubjectFull: Electromagnetic waves
        Type: general
      – SubjectFull: Fiber lasers
        Type: general
      – SubjectFull: Lasers
        Type: general
      – SubjectFull: Linear statistical models
        Type: general
      – SubjectFull: Laser pulses
        Type: general
      – SubjectFull: Molybdenum disulfide
        Type: general
      – SubjectFull: Amplitude estimation
        Type: general
      – SubjectFull: Optical modulation
        Type: general
    Titles:
      – TitleFull: Generation of square-wave pulse bunches in gain-switched Tm-doped fiber linear cavity laser.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Zhou, Cheng
      – PersonEntity:
          Name:
            NameFull: He, Xin-yue
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          Dates:
            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 10712836
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              Value: 47
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              Value: 3
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            – TitleFull: Journal of Russian Laser Research
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