Femtosecond mode-locking of a ytterbium-doped fiber laser using a carbon-nanotube-based mode-locker with ultra-wide absorption band

Goh, C.S.; Kikuchi, K.; Set, Sze Yun; Tanaka, D.; Kotake, T.; Jablonski, M.; Yamashita, Shinji; Kobayashi, T.

doi:10.1109/cleo.2005.202227

Cited by 17 publications

(15 citation statements)

References 4 publications

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“…Generally, SAs can be used as mode lockers or Q switchers in a fiber laser under different conditions. Yb-doped mode-locked fiber lasers based on carbon nanotubes SA were demonstrated in several works [12,21,22]. Recently, passively Q-switched fiber laser has also been studied based on carbon materials and TIs [19,[23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear absorption of SWNT film and its effects to the operation state of pulsed fiber laser

Li¹,

Wang²,

Wang³

et al. 2014

Opt. Express

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We study a single-wall carbon nanotube (SWNT) Polyvinyl alcohol (PVA) composite as a saturable absorber (SA) for pulse generation in Yb-doped fiber lasers. The saturable absorption and optical limiting (OL) characteristics of the SWNT device are investigated. By combing these two nonlinear effects, we find out for the first time, to the best of our knowledge, that mode-locking can be obtained in the dissipative soliton regime at low pumping followed by Q-switching at high pumping, which is quite different from conventional pulse dynamic evolutions. The Q-switched state operating at higher pump powers is due to the OL effect. The inverted operating fiber laser can be applied in various potential applications such as versatile material processing, optical communication and radar system etc.

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Section: Introductionmentioning

confidence: 99%

Nonlinear absorption of SWNT film and its effects to the operation state of pulsed fiber laser

Li¹,

Wang²,

Wang³

et al. 2014

Opt. Express

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“…semiconductor saturable absorber mirrors (SESAMs) or various dyes [3,4]. Recently, new types of saturable absorbers based on single-walled carbon nanotubes (SWCNTs) have been used in fiber and solid-state lasers to initiate mode-locking [5][6][7]. The CNT-based devices benefit from a fairly simple manufacturing process, offer short absorption recovery times (<1 ps) and reasonable modulation depths [7,8].…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotube films for ultrafast broadband technology

Kivistö¹,

Hakulinen²,

Kaskela³

et al. 2009

Opt. Express

229

145

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Mode-locked sub-picosecond operation of Yb-, Er- and Tm:Hodoped fiber lasers operating at 1.05 microm, 1.56 microm and 1.99 microm, respectively, is demonstrated using the same sample carbon nanotube-based saturable absorber mirror. A mesh of single-walled carbon nanotubes was deposited on an Ag-mirror using a one-step dry-transfer contact press method to combine broadband saturable absorption and high reflectance properties. The novel fabrication method of the polymer-free absorber and device parameters determined using nonlinear reflectivity measurement are described in detail. To our knowledge the observed operation bandwidth of approximately 1 microm is the broadest reported to date for a single carbon nanotube-based saturable absorber.

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“…To date, SWNT based mode-lockers have taken one of the following forms: SWNT solution [9], SWNT layers grown or spray-coated over optical parts [5,6], or SWNT-polymer composites [7]. Among these methods, dispersing SWNTs in a polymer matrix seems to be the most promising one since it allows for homogeneous dispersion of nanotubes within the polymer matrix on a scale smaller than the device operation wavelength to minimize scattering losses.…”

Section: Device Fabricationmentioning

confidence: 99%

“…Although the number of reports of SWNT mode-locked lasers is increasing and the minimum achievable pulse duration has gone below 100 fs [4], the actual performance and limitations of these devices remain unclear, due to the lack of systematic characterizations. For example, in a number of reports [5][6][7][8], only the best achievable results e.g. shortest autocorrelation traces, widest spectral widths are reported without information concerning the most important parameters of a saturable absorber device, namely modulation depth, saturation fluence, non-saturable absorption and recovery time.…”

Section: Introductionmentioning

confidence: 99%

Fabrication, characterization and mode locking application of single-walled carbon nanotube/polymer composite saturable absorbers

et al. 2008

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We present the fabrication of a high optical quality single-walled carbon nanotubes (SWNTs) polyvinyl alcohol (PVA) composite film. The composites demonstrate strong saturable absorption at ∼1.5 μm, the spectral range for optical communications. By measuring the nonlinear transmission of a sub-picosecond pump pulse through the film, we were able to deduce a saturation fluence of ∼13.9 μJ/cm 2 and a modulation depth ∼16.9% (in absorption) at a high pulse fluence ∼200 μJ/cm 2 . Transient saturable absorption is investigated by measuring the transmitted autocorrelation traces at various incident power levels. Observed side-peak suppression indicates a fast recovery time on the scale of ∼1 ps for our saturable absorber devices. Furthermore, we use these SWNT-PVA composite saturable absorbers as mode-lockers in an Er 3+ fiber ring laser and achieve ∼560 fs pulse generation with good jitter performance and long term stability. The laser performance is also associated with the parameters of our SWNT based saturable absorber.

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Femtosecond mode-locking of a ytterbium-doped fiber laser using a carbon-nanotube-based mode-locker with ultra-wide absorption band

Cited by 17 publications

References 4 publications

Nonlinear absorption of SWNT film and its effects to the operation state of pulsed fiber laser

Nonlinear absorption of SWNT film and its effects to the operation state of pulsed fiber laser

Carbon nanotube films for ultrafast broadband technology

Fabrication, characterization and mode locking application of single-walled carbon nanotube/polymer composite saturable absorbers

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