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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 12 — Jun. 4, 2012
  • pp: 12966–12974

Degradation of optical properties of a film-type single-wall carbon nanotubes saturable absorber (SWNT-SA) with an Er-doped all-fiber laser

Sung Yoon Ryu, Kyung-Soo Kim, Jungwon Kim, and Soohyun Kim  »View Author Affiliations


Optics Express, Vol. 20, Issue 12, pp. 12966-12974 (2012)
http://dx.doi.org/10.1364/OE.20.012966


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Abstract

Single-wall carbon nanotubes (SWNTs) are promising materials for saturable absorbers (SAs) in mode-locked lasers. However it has been widely recognized that the degradation of optical properties of film-type SWNTs used in femtosecond mode-locked lasers limits the achievable long-term stability of such lasers. In this paper, we study the degradation of optical properties of SWNT-SA fabricated as sandwich type using HiPCO SWNTs with an Er-doped all-fiber laser. The thresholds of laser pump power are examined to avoid the damage of the SWNT-SA. Based on the proposed analysis, it is shown that all-fiber laser pulses of 300 fs pulse width, 3.85 mW average output power, 211.7 MW/cm2 peak intensity and 69.9 MHz repetition rate can be reliably generated without any significant damage to the SWNT-SA film.

© 2012 OSA

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.6810) Lasers and laser optics : Thermal effects
(160.4236) Materials : Nanomaterials

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: February 28, 2012
Revised Manuscript: April 20, 2012
Manuscript Accepted: May 12, 2012
Published: May 24, 2012

Citation
Sung Yoon Ryu, Kyung-Soo Kim, Jungwon Kim, and Soohyun Kim, "Degradation of optical properties of a film-type single-wall carbon nanotubes saturable absorber (SWNT-SA) with an Er-doped all-fiber laser," Opt. Express 20, 12966-12974 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-12-12966


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