Tunable passively Q-switched thulium doped fluoride fibre (TDFF) laser using reduced graphene oxide-silver (rGO-Ag) as saturable absorber
A tunable, passively Q-switched thulium doped fluoride fibre (TDFF) laser using a reduced-graphene oxide-silver (rGO-Ag) thin film as a saturable absorber (SA) for S band operation is proposed and its efficacy demonstrated. Over a pump power range of 91.4 mW up to 158.6 mW, passively generated Q-...
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Main Authors: | , , , , , , |
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Format: | Article |
Language: | English English English |
Published: |
Taylor & Francis
2020
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Subjects: | |
Online Access: | http://irep.iium.edu.my/84006/1/10.1080%4009500340.2020.1810340.pdf http://irep.iium.edu.my/84006/7/84006_Tunable%20passively%20Q-switched%20thulium%20doped%20fluoride%20fibre_WOS.pdf http://irep.iium.edu.my/84006/8/84006_Tunable%20passively%20Q-switched%20thulium%20doped_Scopus.pdf http://irep.iium.edu.my/84006/ https://www.tandfonline.com/doi/full/10.1080/09500340.2020.1810340 |
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Summary: | A tunable, passively Q-switched thulium doped fluoride fibre (TDFF) laser using a reduced-graphene
oxide-silver (rGO-Ag) thin film as a saturable absorber (SA) for S band operation is proposed and its
efficacy demonstrated. Over a pump power range of 91.4 mW up to 158.6 mW, passively generated
Q-switched pulses are observed with repetition rates from 20 to 34.5 kHz and pulse widths from 3.1
to 7.1 µs. The highest pulse energy observed is 101.2 nJ with a signal to noise ratio of ∼ 42 dB. The
proposed laser has a tuning range ∼ 52 nm from 1458 to 1510 nm with a tunable bandpass filter
(TBPF) introduced into the cavity. |
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