Mode-locked 2 mu m fiber laser with a multi-walled carbon nanotube as a saturable absorber

Azooz, S.M. and Ahmad, F. and Ahmad, Harith and Harun, Sulaiman Wadi and Hamida, B.A. and Khan, S. and Halder, A. and Paul, M.C. and Pal, M. and Bhadra, S.K. (2015) Mode-locked 2 mu m fiber laser with a multi-walled carbon nanotube as a saturable absorber. Chinese Optics Letters, 13 (3). p. 4. ISSN 1671-7694

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Abstract

We propose and demonstrate a passively mode-locked fiber laser operating at 1951.8 nm using a commercial thulium-doped fiber (TDF) laser, a homemade double-clad thulium-ytterbium co-doped fiber (TYDF) as the gain media, and a multi-walled carbon nanotube (MWCNT) based saturable absorber (SA). We prepare the MWCNT composite by mixing a homogeneous solution of MWCNTs with a diluted polyvinyl alcohol (PVA) polymer solution and then drying it at room temperature to form a film. The film is placed between two fiber connectors as a SA before it is integrated into a laser ring cavity. The cavity consists of a 2 m long TDF pumped by a 800 nm laser diode and a 15 m long homemade TYDF pumped by a 905 nm multimode laser diode. A stable mode-locking pulse with a repetition rate of 34.6 MHz and a pulse width of 10.79 ps is obtained when the 905 nm multimode pump power reaches 1.8-2.2 W, while the single-mode 800 nm pump power is fixed at 141.5 mW at all times. To the best of our knowledge, this is the first reported mode-locked fiber laser using a MWCNT-based SA.

Item Type: Article
Additional Information: ISI Document Delivery No.: CF0IQ Times Cited: 0 Cited Reference Count: 15 Cited References: Banhart F, 1999, REP PROG PHYS, V62, P1181, DOI 10.1088/0034-4885/62/8/201 Fried NM, 2005, J ENDOUROL, V19, P25, DOI 10.1089/end.2005.19.25 Harun SW, 2012, CHIN OPT LETT, V10, DOI 10.3788/COL201210.101401 IIJIMA S, 1991, NATURE, V354, P56, DOI 10.1038/354056a0 Kasim N, 2014, CHIN OPT LETT, V12, DOI 10.3788/COL201412.031403 Lin XC, 2013, LASER PHYS LETT, V10, DOI 10.1088/1612-2011/10/5/055805 NELSON LE, 1995, APPL PHYS LETT, V67, P19, DOI 10.1063/1.115477 Ramadurai K, 2008, J APPL PHYS, V103, DOI 10.1063/1.2825647 Saidin N, 2013, CHIN OPT LETT, V11, DOI 10.3788/COL201311.063201 Solodyankin MA, 2008, OPT LETT, V33, P1336, DOI 10.1364/OL.33.001336 Szlauer R, 2009, EUR UROL, V55, P368, DOI 10.1016/j.eururo.2008.10.034 Wang Q, 2009, OPT LETT, V34, P3616, DOI 10.1364/OL.34.003616 Yu HJ, 2013, OPT COMMUN, V306, P128, DOI 10.1016/j.optcom.2013.05.010 Zeller W, 2010, SENSORS-BASEL, V10, P2492, DOI 10.3390/s100402492 Zhang L, 2011, LASER PHYS, V21, P1382, DOI 10.1134/S1054660X11150333 Azooz, S. M. Ahmad, F. Ahmad, H. Harun, S. W. Hamida, B. A. Khan, S. Halder, A. Paul, M. C. Pal, M. Bhadra, S. K. University of Malaya Research Grant (UMRG) RP008C-13AET, RU002/2013 This work was supported by the University of Malaya Research Grant (UMRG) (Nos. RP008C-13AET and RU002/2013). 0 CHINESE LASER PRESS SHANGHAI CHIN OPT LETT
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 25 Jul 2015 01:57
Last Modified: 09 Oct 2018 04:08
URI: http://eprints.um.edu.my/id/eprint/13792

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