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Journal ArticleDOI

Mode-locked 2 μm laser with highly thulium-doped silicate fiber

01 Dec 2009-Optics Letters (Optical Society of America)-Vol. 34, Iss: 23, pp 3616-3618
TL;DR: This is the first demonstration of mode-locked 2 mum fiber laser using shorter than 1-m-long active fiber, which paves the way for the demonstration ofmode-locked fiber laser at 2 mum with gigahertz fundamental repetition rate.
Abstract: We report self-starting passively mode-locked fiber lasers with a saturable absorber mirror using a piece of 30-cm-long newly developed highly thulium (Tm)-doped silicate glass fibers. The mode-locked pulses operate at 1980 nm with duration of 1.5 ps and energy of 0.76 nJ. This newly developed Tm-doped silicate fiber exhibits a slope efficiency of 68.3%, an amplified spontaneous emission spectrum bandwidth (FWHM) of 92 nm, and a gain per unit length of greater than 2 dB/cm. To the best of our knowledge, it is the first demonstration of mode-locked 2 μm fiber laser using shorter than 1-m-long active fiber, which paves the way for the demonstration of mode-locked fiber laser at 2 μm with gigahertz fundamental repetition rate.

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Citations
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Journal ArticleDOI
TL;DR: In this paper, a high-energy ultrafast thulium-doped all-fiber master oscillator power amplifier system with a pulse energy of 85 nJ and a pulsewidth of 8 ps was presented.
Abstract: We report on a high-energy ultrafast thulium-doped all-fiber master oscillator power amplifier system with a pulse energy of 85 nJ and a pulsewidth of 8 ps. The seed laser was passively mode-locked by a semiconductor-saturable absorber mirror to generate average power 16 mW at a pulse repetition rate of 14.7 MHz in a linear cavity. A one-stage single-mode thulium-doped fiber amplifier was used directly to boost average power to 1.25 W. The laser center wavelength and the spectral bandwidth were 1963.5 and 0.7 nm, respectively, and the time-bandwidth product of the laser pulse was 0.44.

3 citations

Journal ArticleDOI
TL;DR: In this paper, a continuous wave (CW) and mode-locked ring fiber laser with YSZA-stabilized zirconia alumino (YSZA)-silicate fiber gain element is presented.
Abstract: We report on the development of efficient continuous wave (CW) and mode-locked ring fiber lasers utilizing an $\text{Er}^{3+}$ - doped nanoengineered yttria-stabilized zirconia alumino (YSZA)-silicate fiber as the gain element. With the proper design of the material composition, the YSZA fiber host presents superior features to eliminate the $\text{Er}^{3+}$ cluster effects and enhance the radiative emission over commercial silica fibers, thus significantly increasing the fiber laser efficiencies. Through cavity analysis and optimization, we successfully demonstrate a 975-nm pumped single-mode $\text{Er}^{3+}$ - doped CW YSZA-silicate fiber laser with a slope efficiency of 43%, which is corresponding to the quantum efficiency of 69%. Because of the special dispersion property of the $\text{Er}^{3+}$ - doped YSZA-silicate fiber, we are able to build a stable soliton mode-locked 1565-nm fiber laser with 3.2-nJ pulse energy, 644-fs pulsewidth, and 4.96-kW peak power.

3 citations


Cites background from "Mode-locked 2 μm laser with highly ..."

  • ...This limit is determined by laser parameters, including saturable absorber’s saturation energy, modulation depth, cavity dispersion, and selfphase-modulation [31]....

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Proceedings ArticleDOI
26 Oct 2018
TL;DR: In this paper, an actively mode-locked Ho-doped fiber laser was demonstrated with up to 5.039 GHz repetition rate and the shortest pulse width was 31 ps.
Abstract: We demonstrate an actively mode-locked Ho-doped fiber laser. Actively mode-locked pulses are obtained with up to 5.039 GHz repetition rate. The shortest pulse width is 31 ps. Wavelength can be tuned from 2037nm to 2050nm.

2 citations


Cites background from "Mode-locked 2 μm laser with highly ..."

  • ...The most conventional approaches to achieve radiation around 2μm band are using pumped thulium-doped fiber [1, 2]....

    [...]

Journal ArticleDOI
TL;DR: In this paper, the relationship between 3 and the branching ratio of some excited state energy levels was analyzed using the differential scanning calorimeter (DSC) method, according to the absorption spectra and Judd-Ofelt theory.
Abstract: Silicate glasses 33Bi2O3-50SiO2-17PbO doped with 0.1%,0.25%, 0.5%, 0.75% and 1% Tm2O3 were prepared by the conventional melting method. Thermal property was studied by the DSC (Differential Scanning Calorimeter) method. Its Tx-Tg value is 138℃. According to the absorption spectra and Judd-Ofelt theory, J-O strength parameters, radiative transition properties, the radiative lifetimes and the branching ratio of some excited state energy levels were calculated. Analysis on the relationship between 3

2 citations

References
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Journal ArticleDOI
TL;DR: In this article, a ring-cavity thulium fiber laser with a single-wall carbon nanotube absorber was used in transmission, achieving an average output power of 3.4 mW.
Abstract: We report a ring-cavity thulium fiber laser mode locked with a single-wall carbon nanotube absorber used in transmission. A carboxymethyl cellulose polymer film with incorporated carbon nanotubes synthesized by the arc discharge method has an absorption coinciding with in the amplification bandwidth of a Tm-doped fiber. This laser is pumped by an erbium fiber laser at 1.57 μm wavelength and produces a 37 MHz train of mode-locked 1.32 ps pulses at 1.93 μm wavelength with an average output power of 3.4 mW.

377 citations

Journal ArticleDOI
TL;DR: In this article, an additive-pulse mode-locked (APM) thulium-doped fiber ring laser was presented, which produces 350-500 fs pulses tunable from 1798 to 1902 nm.
Abstract: We report an additive‐pulse mode‐locked (APM) thulium‐doped fiber ring laser producing 350–500 fs pulses tunable from 1798 to 1902 nm. The laser operates in the soliton regime, where periodic perturbations cause predictable sidebands and modulation in the optical spectrum.

245 citations

Journal ArticleDOI
R. C. Sharp1, D.E. Spock1, N. Pan1, J. Elliot1
02 Jun 1996
TL;DR: A self-starting passively mode-locked thulium-doped silica fiber laser capable of 190-fs pulses is reported, achieved with a band-gap-engineered saturable absorber fabricated monolithically along with the output coupler of the laser by MOCVD.
Abstract: Summary form only given. We report a self-starting passively mode-locked thulium-doped silica fiber laser capable of 190-fs pulses. Mode-locking of the fiber laser was achieved with a band-gap-engineered saturable absorber fabricated monolithically along with the output coupler of the laser by MOCVD. Stable, single-pulse-in-the-cavity mode-locking was observed for a 2-m-long fiber laser utilizing a nanosecond response strained InGaAs detector.

203 citations

Journal ArticleDOI
TL;DR: Stabilization of a thulium-holmium codoped fiber soliton laser with a saturable absorber based on carbon nanotubes with transform-limited 750-fs pulses with 0.5-nJ energy is reported.
Abstract: We report stabilization of a thulium-holmium codoped fiber soliton laser with a saturable absorber based on carbon nanotubes. The laser generates transform-limited 750-fs pulses with 0.5-nJ energy.

195 citations

Journal ArticleDOI
TL;DR: A chain of four Tm-doped fibers amplified a single-frequency, 2040 nm diode laser to 608 W with M(2)=1.05+/-0.03, to be known as the highest power obtained from any single- frequencies, single-mode fiber laser.
Abstract: A chain of four Tm-doped fibers amplified a single-frequency, 2040 nm diode laser to 608 W with M2=1.05±0.03, limited by available pump power. Stimulated Brillouin scattering limits were investigated by splicing different lengths of passive fiber to the output of the final amplifier stage. Integrated rms phase noise above 1 kHz was less than λ/30, suggesting the possibility of further scaling via coherent beam combining. To our knowledge, this is the highest power obtained from any single-frequency, single-mode fiber laser.

192 citations