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Developing high energy dissipative soliton fiber lasers at 2 micron.

Huang C, Wang C, Shang W, Yang N, Tang Y, Xu J - Sci Rep (2015)

Bottom Line: Numerical simulation predicts the existence of stable 2 μm dissipative soliton solutions with pulse energy over 10 nJ, comparable to that achieved in the 1 μm and 1.5 μm regimes.Experimental operation confirms the validity of the proposal.These results will advance our understanding of mode-locked fiber lasers at different wavelengths and lay an important step in achieving high energy ultrafast laser pulses from anomalous dispersion gain media.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.

ABSTRACT
While the recent discovered new mode-locking mechanism--dissipative soliton--has successfully improved the pulse energy of 1 μm and 1.5 μm fiber lasers to tens of nanojoules, it is still hard to scale the pulse energy at 2 μm due to the anomalous dispersion of the gain fiber. After analyzing the intracavity pulse dynamics, we propose that the gain fiber should be condensed to short lengths in order to generate high energy pulse at 2 μm. Numerical simulation predicts the existence of stable 2 μm dissipative soliton solutions with pulse energy over 10 nJ, comparable to that achieved in the 1 μm and 1.5 μm regimes. Experimental operation confirms the validity of the proposal. These results will advance our understanding of mode-locked fiber lasers at different wavelengths and lay an important step in achieving high energy ultrafast laser pulses from anomalous dispersion gain media.

No MeSH data available.


Related in: MedlinePlus

(a) Calculated (circle dots) and (b) measured (asterisk dots) maximum pulse energy versus the length of GF under the pump power of 1 W. The curves are exponential fittings.
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f4: (a) Calculated (circle dots) and (b) measured (asterisk dots) maximum pulse energy versus the length of GF under the pump power of 1 W. The curves are exponential fittings.

Mentions: To confirm the idea, simulations are also performed in the above mode-locked fiber laser (Fig. 1) to observe the GF length dependence of the pulse energy. The simulated maximum output pulse energies with various GF lengths are indicated in Fig. 4(a). It is clear that decreasing the GF length will dramatically increase the pulse energy. For instance, as high as 11 nJ pulses are supported by the cavity with a 0.2 m GF, and the pulse can be further dechirped to ~100 fs outside the cavity. This confirms our expectation for achieving high energy ultrashort pulses with anomalous dispersion GFs: shortening the anomalous dispersion GF to a sufficiently small length can significantly improve the DS pulse energy.


Developing high energy dissipative soliton fiber lasers at 2 micron.

Huang C, Wang C, Shang W, Yang N, Tang Y, Xu J - Sci Rep (2015)

(a) Calculated (circle dots) and (b) measured (asterisk dots) maximum pulse energy versus the length of GF under the pump power of 1 W. The curves are exponential fittings.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4562253&req=5

f4: (a) Calculated (circle dots) and (b) measured (asterisk dots) maximum pulse energy versus the length of GF under the pump power of 1 W. The curves are exponential fittings.
Mentions: To confirm the idea, simulations are also performed in the above mode-locked fiber laser (Fig. 1) to observe the GF length dependence of the pulse energy. The simulated maximum output pulse energies with various GF lengths are indicated in Fig. 4(a). It is clear that decreasing the GF length will dramatically increase the pulse energy. For instance, as high as 11 nJ pulses are supported by the cavity with a 0.2 m GF, and the pulse can be further dechirped to ~100 fs outside the cavity. This confirms our expectation for achieving high energy ultrashort pulses with anomalous dispersion GFs: shortening the anomalous dispersion GF to a sufficiently small length can significantly improve the DS pulse energy.

Bottom Line: Numerical simulation predicts the existence of stable 2 μm dissipative soliton solutions with pulse energy over 10 nJ, comparable to that achieved in the 1 μm and 1.5 μm regimes.Experimental operation confirms the validity of the proposal.These results will advance our understanding of mode-locked fiber lasers at different wavelengths and lay an important step in achieving high energy ultrafast laser pulses from anomalous dispersion gain media.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.

ABSTRACT
While the recent discovered new mode-locking mechanism--dissipative soliton--has successfully improved the pulse energy of 1 μm and 1.5 μm fiber lasers to tens of nanojoules, it is still hard to scale the pulse energy at 2 μm due to the anomalous dispersion of the gain fiber. After analyzing the intracavity pulse dynamics, we propose that the gain fiber should be condensed to short lengths in order to generate high energy pulse at 2 μm. Numerical simulation predicts the existence of stable 2 μm dissipative soliton solutions with pulse energy over 10 nJ, comparable to that achieved in the 1 μm and 1.5 μm regimes. Experimental operation confirms the validity of the proposal. These results will advance our understanding of mode-locked fiber lasers at different wavelengths and lay an important step in achieving high energy ultrafast laser pulses from anomalous dispersion gain media.

No MeSH data available.


Related in: MedlinePlus