期刊
IET OPTOELECTRONICS
卷 13, 期 5, 页码 247-253出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-opt.2018.5149
关键词
optical pulse generation; optical saturable absorption; erbium; Q-switching; casting; laser cavity resonators; optical pumping; fibre lasers; optical fibre fabrication; metallic thin films; optical films; tris-(8-hydroxyquinoline) aluminium thin film; passively Q-switched erbium-doped fibre laser; tris-(8-hydroxyquinoline)aluminium organic material; passive saturable absorber; laser cavity; optical fibre ferrules; pulsed laser generation; stable Q-switched laser pulse generation; full-width half maximum; drop casting technique; room temperature; energy 63; 89 nJ; power 20; 0 mW to 122; 0 mW; wavelength 1559; 0 nm; wavelength 1; 0 nm; time 6; 65 mus to 1; 2 mus; temperature 293 K to 298 K
资金
- Imam Ja'far Al-Sadiq University, Baghdad, Iraq
- Mandate Research Grant, Airlangga University (2018)
- Al-Madinah International University (MEDIU), Malaysia [RMC-MEDIU003/E/2018]
A passively Q-switched erbium-doped fibre laser was demonstrated by using tris-(8-hydroxyquinoline)aluminium (Alq(3)) organic material as a passive saturable absorber (SA). The SA was fabricated by a drop casting technique at room temperature and incorporated into a laser cavity by inserting it between two optical fibre ferrules. The Q-switched fibre laser operates at a centre wavelength of 1559 nm with a full-width half maximum of 1 nm. The generated pulse train is stable and has a pulse width decreased from 6.65 to 1.2 mu s and the pulse repetition rate increased from 31.65 to 144.5 kHz as the pump power increased from 20 to 122 mW. The maximum pulse energy obtained is 63.89 nJ. This work indicates that the Alq(3) as SA has a great potential to be utilised for pulsed laser generation. To the best of the authors' knowledge, this is the first time an organic material is utilised as a SA device for generating a stable Q-switched laser pulse.
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