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Role of Intrapulse Coherence in Carrier-Envelope Phase Stabilization
Nils Raabe1, Tianli Feng1, Tobias Witting1
1Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Straße 2a, 12489 Berlin, Germany.
Physical Review Letters
|January 18, 2018
Summary
New coherence criterion, intrapulse coherence, is crucial for ultrashort laser pulses. Loss of this coherence, even with compressible pulse trains, impacts precision frequency metrology and high-field physics applications.
Area of Science:
- * Optics and Photonics
- * Quantum Optics
- * Laser Physics
Background:
- * Coherence is vital for light characterization and experimental use.
- * Pulse-to-pulse coherence typically assesses laser pulse train compressibility.
- * Nonlinear media can degrade pulse-to-pulse coherence, impacting compressibility.
Purpose of the Study:
- * Introduce and define 'intrapulse coherence' as a new criterion.
- * Evaluate intrapulse coherence for applications requiring spectral component coherence within a pulse.
- * Investigate the impact of filamentation-based supercontinuum generation on intrapulse coherence.
Main Methods:
- * Numerical simulations to model supercontinuum generation.
- * Experimental validation of simulation findings.
- * Analysis of coherence properties within laser pulses.
Main Results:
- * Filamentation-based supercontinuum generation can reduce intrapulse coherence.
- * Loss of intrapulse coherence can occur despite high pulse train compressibility.
- * This coherence loss limits carrier-envelope phase stabilization and high-field physics.
Conclusions:
- * Intrapulse coherence is a critical metric for ultrashort pulse applications.
- * Supercontinuum generation requires careful consideration of intrapulse coherence.
- * Understanding intrapulse coherence is essential for advancing precision frequency metrology and optical physics.
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