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Basic considerations on coherent combining of ultrashort laser pulses
Arno Klenke1, Enrico Seise, Jens Limpert
1Institute of Applied Physics, Friedrich-Schiller-University Jena, Jena, Germany. arno.klenke@uni-jena.de
Optics Express
|January 26, 2012
Summary
Coherent combining of ultrashort laser pulses presents challenges due to temporal and spectral effects. However, careful system adjustment allows for excellent combining efficiency, providing key design guidelines for laser systems.
Area of Science:
- Laser physics and optics
- Nonlinear optics
- High-power laser systems
Background:
- Coherent combining is a method to increase laser amplifier performance.
- Ultrashort pulses introduce unique temporal and spectral challenges compared to longer pulses.
Purpose of the Study:
- Investigate the impact of temporal and spectral effects on ultrashort pulse coherent combining.
- Develop analytical equations for evaluating these impacts.
- Provide design guidelines for coherent combining laser systems.
Main Methods:
- Analysis of temporal and spectral effects (self-phase modulation, dispersion, path length differences).
- Derivation of simple analytical equations to quantify these effects.
- Simulation and experimental validation (implied).
Main Results:
- Temporal and spectral effects significantly influence coherent combining of ultrashort pulses.
- Analytical equations derived provide quantitative insights into these impacts.
- Excellent combining efficiency is achievable with careful system stabilization.
Conclusions:
- Ultrashort pulse coherent combining requires careful consideration of nonlinear temporal and spectral effects.
- The derived analytical formulas serve as valuable design guidelines.
- Optimized and stabilized systems can overcome these challenges to achieve high combining efficiency.
