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Feedback-controlled Raman dissipative solitons in a fiber laser
Optics Express
|April 4, 2015
Summary
Chirped dissipative solitons in fiber lasers can trigger noisy Raman pulses. A feedback loop creates Raman dissipative solitons, enabling optimized spectra and the first coherent combining of both soliton types.
Area of Science:
- Nonlinear optics
- Fiber laser physics
- Ultrafast photonics
Background:
- Chirped dissipative solitons (DS) in fiber lasers can generate high-energy pulses.
- Excessive pulse energy can trigger stimulated Raman scattering (SRS), leading to noisy Raman pulses (RP).
- Previous work demonstrated re-injecting RP into the laser cavity can form Raman dissipative solitons (RDS).
Purpose of the Study:
- To optimize the spectral characteristics of Raman dissipative solitons (RDS) using a feedback loop.
- To demonstrate the first experimental results of coherent combining of dissipative solitons (DS) and Raman dissipative solitons (RDS).
Main Methods:
- Implementing a feedback loop for re-injection of Raman pulses into the fiber laser cavity.
- Optimizing feedback parameters to control and enhance RDS spectral properties.
- Developing a setup for coherent combining of DS and RDS.
Main Results:
- Successfully formed Raman dissipative solitons (RDS) with controllable spectral features.
- Achieved optimized spectral characteristics for the generated RDS.
- Demonstrated the first experimental coherent combining of DS and RDS.
Conclusions:
- A feedback loop is effective for optimizing RDS generation and spectral properties in fiber lasers.
- Coherent combining of DS and RDS is experimentally feasible, opening new avenues for high-energy pulse generation.
- This work advances the control and application of dissipative solitons in nonlinear fiber optics.
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