Influence of average cavity dispersion and spectral bandwidth on passively harmonic mode locked L-band Er-doped fiber laser

Qianqian Huang, Chuanhang Zou, Tianxing Wang, Mohammed Al Araimi, Aex Rozhin, Chengbo Mou

Research output: Contribution to journalArticle

Abstract

We systematically study the impact of average cavity dispersion and pulse spectral bandwidth on harmonic mode locking in the long-wavelength band from an Er-doped fiber laser using carbon nanotubes polyvinyl alcohol (CNTs-PVA) film mode locker. By carrying out pulse energy management through optimizing the average cavity dispersion and optical spectral bandwidth, 2.08 GHz repetition rate corresponding to 201 st harmonic with 36.5 dB side mode suppression ratio (SMSR) can be realized under 205 mW pump power at 1597.53 nm. Furthermore, we systematically investigate the characteristics of the harmonically mode locked ultrashort optical pulses with different spectral bandwidths versus pump power under fixed cavity dispersion first. Key laser parameters have been studied including pumping efficiency, duration, energy, SMSR, and time bandwidth product. Enlightened by the experimental results, a simple law on preliminary and fast judgment of pulses frequency under fixed pump power is proposed, namely, by monitoring the pulse spectral bandwidth. The laser source featuring high repetition rate and L-band operation is greatly sought-after in some specific applications such as modern optical communication system etc.

Original languageEnglish
Article number8747448
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume25
Issue number4
Early online date27 Jun 2019
DOIs
Publication statusPublished - 1 Jul 2019

Fingerprint

ultrahigh frequencies
Fiber lasers
Laser modes
fiber lasers
bandwidth
Bandwidth
harmonics
cavities
Laser pulses
pulses
Pumps
pumps
repetition
retarding
Polyvinyl Alcohol
Pumping (laser)
Laser mode locking
Carbon Nanotubes
Lasers
polyvinyl alcohol

Bibliographical note

© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Keywords

  • Fiber lasers
  • laser mode locking
  • nanomaterials

Cite this

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title = "Influence of average cavity dispersion and spectral bandwidth on passively harmonic mode locked L-band Er-doped fiber laser",
abstract = "We systematically study the impact of average cavity dispersion and pulse spectral bandwidth on harmonic mode locking in the long-wavelength band from an Er-doped fiber laser using carbon nanotubes polyvinyl alcohol (CNTs-PVA) film mode locker. By carrying out pulse energy management through optimizing the average cavity dispersion and optical spectral bandwidth, 2.08 GHz repetition rate corresponding to 201 st harmonic with 36.5 dB side mode suppression ratio (SMSR) can be realized under 205 mW pump power at 1597.53 nm. Furthermore, we systematically investigate the characteristics of the harmonically mode locked ultrashort optical pulses with different spectral bandwidths versus pump power under fixed cavity dispersion first. Key laser parameters have been studied including pumping efficiency, duration, energy, SMSR, and time bandwidth product. Enlightened by the experimental results, a simple law on preliminary and fast judgment of pulses frequency under fixed pump power is proposed, namely, by monitoring the pulse spectral bandwidth. The laser source featuring high repetition rate and L-band operation is greatly sought-after in some specific applications such as modern optical communication system etc.",
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Influence of average cavity dispersion and spectral bandwidth on passively harmonic mode locked L-band Er-doped fiber laser. / Huang, Qianqian; Zou, Chuanhang; Wang, Tianxing; Al Araimi, Mohammed; Rozhin, Aex; Mou, Chengbo.

In: IEEE Journal of Selected Topics in Quantum Electronics, Vol. 25, No. 4, 8747448, 01.07.2019.

Research output: Contribution to journalArticle

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AU - Huang, Qianqian

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AU - Rozhin, Aex

AU - Mou, Chengbo

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Y1 - 2019/7/1

N2 - We systematically study the impact of average cavity dispersion and pulse spectral bandwidth on harmonic mode locking in the long-wavelength band from an Er-doped fiber laser using carbon nanotubes polyvinyl alcohol (CNTs-PVA) film mode locker. By carrying out pulse energy management through optimizing the average cavity dispersion and optical spectral bandwidth, 2.08 GHz repetition rate corresponding to 201 st harmonic with 36.5 dB side mode suppression ratio (SMSR) can be realized under 205 mW pump power at 1597.53 nm. Furthermore, we systematically investigate the characteristics of the harmonically mode locked ultrashort optical pulses with different spectral bandwidths versus pump power under fixed cavity dispersion first. Key laser parameters have been studied including pumping efficiency, duration, energy, SMSR, and time bandwidth product. Enlightened by the experimental results, a simple law on preliminary and fast judgment of pulses frequency under fixed pump power is proposed, namely, by monitoring the pulse spectral bandwidth. The laser source featuring high repetition rate and L-band operation is greatly sought-after in some specific applications such as modern optical communication system etc.

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