Mode-locked fiber laser with cascaded generation of coherent Raman dissipative solitons

Denis S. Kharenko; Anastasia E. Bednyakova; Evgenii V. Podivilov; Mikhail P. Fedoruk; Alexander A. Apolonskiy; Sergey A. Babin

doi:10.1117/12.2213010

11 March 2016 Mode-locked fiber laser with cascaded generation of coherent Raman dissipative solitons

Denis S. Kharenko, Anastasia E. Bednyakova, Evgenii V. Podivilov, Mikhail P. Fedoruk, Alexander A. Apolonskiy, Sergey A. Babin

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Proceedings Volume 9728, Fiber Lasers XIII: Technology, Systems, and Applications; 972836 (2016) https://doi.org/10.1117/12.2213010
Event: SPIE LASE, 2016, San Francisco, California, United States

Abstract

We experimentally demonstrate a cascaded generation of a conventional dissipative soliton (DS) at 1020 nm and Raman dissipative solitons (RDS) of the first (1065 nm) and second (1115 nm) orders inside a common fiber laser cavity. The generated high-energy pulses are shown to be linearly-chirped and compressible to 200-300 fs durations for all wavelengths. Moreover, the pulses are mutually coherent that has been confirmed by efficient coherent combining exhibiting ~75 fs and <40 fs interference fringes within the combined pulse envelope of a DS with the first-order RDS and the second-order RDS respectively. The numerical simulation was performed with sinusoidal (soft) and step-like (hard) spectral filters and took into account the discreetness of the laser elements. Shown that even higher degree of coherence and shorter pulses could be achieved with hard spectral filtering. This approach opens the door towards cascaded generation of multiple coherent dissipative solitons in a broad spectral range (so-called dissipative soliton comb). The demonstrated source of coherent dissipative solitons can improve numerous areas such as frequency comb generation, pulse synthesis, biomedical imaging and the generation of coherent mid-infrared supercontinuum.

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Denis S. Kharenko, Anastasia E. Bednyakova, Evgenii V. Podivilov, Mikhail P. Fedoruk, Alexander A. Apolonskiy, and Sergey A. Babin "Mode-locked fiber laser with cascaded generation of coherent Raman dissipative solitons", Proc. SPIE 9728, Fiber Lasers XIII: Technology, Systems, and Applications, 972836 (11 March 2016); https://doi.org/10.1117/12.2213010

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KEYWORDS

Solitons

Raman spectroscopy

Picosecond phenomena

Polarization

Fiber lasers

Mode locking

Pulsed laser operation

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