An all fiberized, 1.89-μm Q-switched laser employing carbon nanotube evanescent field interaction

• DOI: 10.7452/lapl.201210061
• Publication Date: 2012-07-01T06:24:33Z
• Authors: M Jung; J Koo; Y M Chang; P Debnath; Y-W Song; J H Lee
• Keywords: Thulium; Saturable absorption; Ring laser

An all-fiber-integrated, Q-switched thulium-doped fiber laser based on carbon nanotube (CNT) evanescent field interaction is experimentally demonstrated. It shown that a saturable absorber CNT-deposited D-shaped can readily be incorporated into ring cavity for passive Q-switching operation at wavelength of ∼ 1.89 μm. Using the scheme stable pulses with temporal width 7.155 μs could obtained repetition rate 14.18 kHz. The stability output was also investigated.