Tunable passively Q-switched ultranarrow linewidth erbium-doped fiber laser
•We demonstrated a passively Q-switched erbium-doped fiber laser with ultranarrow linewidth.•Ultranarrow linewidth laser operation is realized based on spectral filtering effect.•A linewidth value of 17.5 kHz, which may be the narrowest linewidth for a Q-switched fiber laser to the best of our knowl...
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Published in | Results in physics Vol. 16; p. 102949 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
01.03.2020
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | •We demonstrated a passively Q-switched erbium-doped fiber laser with ultranarrow linewidth.•Ultranarrow linewidth laser operation is realized based on spectral filtering effect.•A linewidth value of 17.5 kHz, which may be the narrowest linewidth for a Q-switched fiber laser to the best of our knowledge.
A tunable passively Q-switched erbium-doped fiber laser with ultranarrow linewidth is proposed and demonstrated. With the single wall carbon nanotubes (SWCNTs) as the passive Q-switch, the ultranarrow linewidth laser operation is realized based on spectral filtering effect.
using an ultranarrow tunable bandpass filter (UNTBF). The Q-switched laser spectrum is tunable from 1525 to 1561 nm, covering a wavelength range of 36 nm. At 1545 nm, the highest repetition rate of ~38 kHz and the lowest pulse width of 1.15 μs are obtained, with the corresponding pulse energy of approximately 0.18nJ. The linewidth measurement using self-heterodyne technique yields a linewidth value of 17.5 kHz, which may be the narrowest linewidth for a Q-switched fiber laser to the best of our knowledge. |
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ISSN: | 2211-3797 2211-3797 |
DOI: | 10.1016/j.rinp.2020.102949 |