Open AccessPassive mode-locking of a Tm-doped bulk laser near 2 μm using a carbon nanotube saturable absorber
Author(s) -
Won Bae Cho,
Andreas Schmidt,
Ji Hye Yim,
Sun Young Choi,
Soonil Lee,
Fabıan Rotermund,
Uwe Griebner,
Günter Steinmeyer,
Valentín Petrov,
Xavier Mateos,
María Cinta Pujol,
Joan J. Carvajal,
Magdalena Aguiló,
Francesc Díaz
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.011007
Subject(s) - saturable absorption , materials science , carbon nanotube , mode locking , laser , optics , fiber laser , doping , absorption (acoustics) , optoelectronics , nanotechnology , physics , composite material
Stable and self-starting mode-locking of a Tm:KLu(WO(4))(2) crystal laser is demonstrated using a transmission-type single-walled carbon nanotube (SWCNT) based saturable absorber (SA). These experiments in the 2 microm regime utilize the E11 transition of the SWCNTs for nonlinear saturable absorption. The recovery time of the SWCNT-SA is measured by pump-probe measurements as approximately 1.2 ps. The mode-locked laser delivers approximately 10 ps pulses near 1.95 microm with a maximum output power of up to 240 mW at 126 MHz repetition rate.