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Q-switched ytterbium doped fiber laser using multi-walled carbon nanotubes saturable absorber

Munajat, Yusof and Kasim, Nabilah and Harun, Sulaiman Wadi and Ahmad, Harith and Ahmad, Fauzan and Almsoudy, Ahmed (2014) Q-switched ytterbium doped fiber laser using multi-walled carbon nanotubes saturable absorber. Chinese Optics Letters, 12 (3). ISSN 1671-7694

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Official URL: http://dx.doi.org/10.3788/COL201412.031403

Abstract

A Q-switched ytterbium-doped fiber laser (YDFL) is proposed and demonstrated using a newly developed multi-walled carbon nanotubes polyethylene oxide (MWCNTs-PEO) film as a passive saturable absorber (SA). The saturable absorber is prepared by mixing the MWCNTs homogeneous solution into a dilute PEO polymer solution before it is left to dry at room temperature to produce thin film. Then the film is sandwiched between two FC/PC fiber connectors and integrated into the laser cavity for Q-switching pulse generation. The laser generates a stable pulse operating at wavelength of 1060.2 nm with a threshold pump power of 53.43 mW. The YDFL generates a stable pulse train with repetition rates ranging from 7.92 to 24.27 kHz by varying 980-nm pump power from 53.42 to 65.72 mW. At 59.55-mW pump power, the lowest pulse width and the highest pulse energy are obtained at 12.18 μs and 143.5 nJ, respectively.

Item Type:Article
Uncontrolled Keywords:fiber lasers, optical pumping
Subjects:Q Science
Divisions:Science
ID Code:62372
Deposited By: Widya Wahid
Deposited On:06 Jun 2017 16:00
Last Modified:06 Jun 2017 16:00

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