Wideband tunable Q-switched fiber laser using graphene as a saturable absorber
An ultra-wide wavelength tuning range, which covers three different band regions consisting of the S-, C-, and L-bands, is proposed and demonstrated for a graphene-based Q-switched erbium-doped fiber laser using a tunable bandpass filter as the wavelength tuning and filtering mechanism. A 3 m leng...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
https://www.tandfonline.com/doi/abs/10.1080/09500340.2013.842005
2013
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/84316/7/84316_Wideband%20tunable%20Q-switched%20fiber%20laser%20using.pdf http://irep.iium.edu.my/84316/8/84316_Wideband%20tunable%20Q-switched%20fiber%20laser%20using%20graphene%20as%20a%20saturable%20absorber_Scopus.pdf http://irep.iium.edu.my/84316/ https://www.tandfonline.com/doi/abs/10.1080/09500340.2013.842005 |
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| Summary: | An ultra-wide wavelength tuning range, which covers three different band regions consisting of the S-, C-, and L-bands,
is proposed and demonstrated for a graphene-based Q-switched erbium-doped fiber laser using a tunable bandpass filter
as the wavelength tuning and filtering mechanism. A 3 m length of erbium-doped fiber is used as the gain medium in a
ring laser cavity configuration, with absorption coefficients of between 11 and 13 dB m�1 at 980 nm and about
18 dB m�1 at 1550 nm. The tuning range of the Q-switching pulses covers a wide wavelength range of 58 nm, which
spans from 1512.5 nm to 1570.5 nm. In addition, the lasing and Q-switching thresholds are considerably low, with
respective values of 11.0 mW and 18.4 mW. A repetition rate of 55.3 kHz is obtained at the maximum pump power
of 100.4 mW, together with pulse width and pulse energy of 1.6 μs and 25.8 nJ, respectively. |
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