Title: High-power, passively mode-locked Nd:GdVO(4) laser using single-walled carbon nanotubes as saturable absorber
Authors: Chen, Hou-Ren
Wang, Yong-Gang
Tsai, Chih-Ya
Lin, Kuei-Huei
Chang, Teng-Yao
Tang, Jau
Hsieh, Wen-Feng
Department of Photonics
Issue Date: 1-Apr-2011
Abstract: We use a new (to our knowledge) fabrication method of a single-walled carbon nanotube (SWCNT) absorber without polymer to sustain high-power illumination. Using a series of saturable absorbers (SAs) incorporating different amounts of SWCNTs, we demonstrate mode-locking for a Nd:GdVO(4) laser in the 1 mu m spectral range. Continuous-wave mode-locking (CWML) pulses with a maximum output power of 3.6 W at 1063 nm and high noise extinction of 61 dB has been achieved to give the highest pulse peak power of 3.6 kW and pulse energy of 30 nJ under 15 W pumping. To our knowledge, this is the highest CWML output power with SWCNT-SAs reported. The measured nonlinear absorption of the SWCNT-SAs shows a modulation depth of similar to 3% with subpicosecond recovery time. (C) 2011 Optical Society of America
URI: http://dx.doi.org/10.1364/OL.36.001284
ISSN: 0146-9592
DOI: 10.1364/OL.36.001284
Volume: 36
Issue: 7
Begin Page: 1284
End Page: 1286
Appears in Collections:Articles