CNT Film Fabrication for Mode-Locked Er-Doped Fiber Lasers: The Droplet Method

Author

Gerosa, Rodrigo M. ; Steinberg, D. ; Rosa, H.G. ; Barros, C. ; de Matos, Christiano J. S. ; de Souza, E.A.T.

Author_Institution

Graphene & Nano-Mater. Res. Center, Univ. Presbiteriana Mackenzie, Sao Paulo, Brazil

Volume

25

Issue

11

fYear

2013

fDate

1-Jun-13

Firstpage

1007

Lastpage

1010

Abstract

We present a new and simple method for the fabrication of carbon nanotube (CNT) films for fiber laser mode-locking. Using a microtip, we deposited a droplet of CNT/polymer suspension directly onto a fiber ferrule. Typical film thicknesses as low as 20 μm are measured. Thicker films are easily achievable through the deposition of additional droplets, which allow for fine tuning the transmittance of the film. Based on a 40-mg/ml CNT concentration film used in an Erbium-doped fiber laser, we obtain mode-locked pulses with a bandwidth of 10.2 nm and duration of 364 fs.

Keywords

carbon nanotubes; drops; erbium; fibre lasers; high-speed optical techniques; infrared spectra; laser mode locking; liquid phase deposition; nanofabrication; nanophotonics; thin films; C; CNT concentration film; CNT-polymer suspension; carbon nanotube films; droplet method; erbium-doped fiber laser; fiber ferrule; film thicknesses; fine tuning; microtip; mode-locked Er-doped fiber lasers; mode-locked pulses; thick films; time 364 fs; transmittance; Carbon nanotubes; fiber laser; mode-locked lasers; saturable absorption;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2255871

Filename

6491441