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Optics Letters

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  • Vol. 36, Iss. 7 — Apr. 1, 2011
  • pp: 1284–1286

High-power, passively mode-locked Nd : GdVO 4 laser using single-walled carbon nanotubes as saturable absorber

Hou-Ren Chen, Yong-Gang Wang, Chih-Ya Tsai, Kuei-Huei Lin, Teng-Yao Chang, Jau Tang, and Wen-Feng Hsieh  »View Author Affiliations


Optics Letters, Vol. 36, Issue 7, pp. 1284-1286 (2011)
http://dx.doi.org/10.1364/OL.36.001284


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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 μm 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 3 % with subpicosecond recovery time.

© 2011 Optical Society of America

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.4050) Lasers and laser optics : Mode-locked lasers
(160.4330) Materials : Nonlinear optical materials
(160.4236) Materials : Nanomaterials

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 7, 2011
Revised Manuscript: March 11, 2011
Manuscript Accepted: March 14, 2011
Published: March 31, 2011

Citation
Hou-Ren Chen, Yong-Gang Wang, Chih-Ya Tsai, Kuei-Huei Lin, Teng-Yao Chang, Jau Tang, and Wen-Feng Hsieh, "High-power, passively mode-locked Nd:GdVO4laser using single-walled carbon nanotubes as saturable absorber," Opt. Lett. 36, 1284-1286 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-7-1284


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