Chin. Phys. Lett.  2014, Vol. 31 Issue (12): 124203    DOI: 10.1088/0256-307X/31/12/124203
FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
Q-Switching Pulse Generation with Thulium-Doped Fiber Saturable Absorber
Zian Cheak Tiu1,2,3, Arman Zarei1,2, Sin Jin Tan1,2, Harith Ahmad2, Sulaiman Wadi Harun2**
1Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
2Photonics Research Center, University of Malaya, Kuala Lumpur 50603, Malaysia
3School of Engineering, KDU University College, SS22/41, Damansara Jaya, Petaling Jaya 47400, Selangor Darul Ehsan, Malaysia
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Zian Cheak Tiu, Arman Zarei, Sin Jin Tan et al  2014 Chin. Phys. Lett. 31 124203
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Abstract A simple Q-switched erbium-doped fiber laser (EDFL) is proposed and demonstrated by using a 2-m-long thulium-doped fiber (TDF) as a passive saturable absorber (SA). The EDFL generates a Q-switching pulse operating at 1557.6 nm at a threshold pump power as low as 20.0 mW. The Q-switching operation is maintained before disappearance when the pump power is above 33.7 mW. This is due to the fact that the TDF SA could not fully recover in time after a pulse and less gain population is excited before the next pulsing. With the SA, the laser produces a stable pulse train with repetition rate ranging from 3.9 to 12.7 kHz and the pulse width reduces from 20.6 to 7.4 μs while varying the 1480 nm pump power from 20 mW to 33.7 mW. The maximum pulse energy of 22.8 nJ is obtained at a pump power of 20.0 mW. The laser is perspective for technology processes and medicine.
Published: 12 January 2015
PACS:  42.81.-i (Fiber optics)  
  42.60.Gd (Q-switching)  
  42.60.Da (Resonators, cavities, amplifiers, arrays, and rings)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/31/12/124203       OR      https://cpl.iphy.ac.cn/Y2014/V31/I12/124203
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Articles by authors
Zian Cheak Tiu
Arman Zarei
Sin Jin Tan
Harith Ahmad
Sulaiman Wadi Harun
[1] Lin J H et al 2007 Laser Phys. Lett. 4 413
[2] Harun S W et al 2012 Chin. Phys. Lett. 29 114202
[3] Zhou R L et al 2013 Chin. Phys. B 22 064208
[4] Huang J et al 2009 Opt. Lett. 34 2360
[5] Wang H Y et al 2012 Opt. Commun. 285 1905
[6] Anyi C L et al 2013 Ukr. J. Phys. Opt. 14 212
[7] Tiu Z C et al 2014 J. Mod. Opt. 61 1133
[8] Ismail M A et al 2013 Laser Phys. Lett. 10 025102
[9] Tiu Z C et al 2014 Indian J. Phys. 88 727
[10] Li H P et al 2014 Chin. Phys. B 23 024209
[11] Dvoyrin V V et al 2007 Opt. Lett. 32 451
[12] Kurkov A S et al 2009 Laser Phys. Lett. 6 135
[13] Tsai T Y et al 2009 Opt. Lett. 34 2891
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