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Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
Published on: February 10, 2020
Pulse-energy statistics in stimulated Raman scattering
Optics Letters
|August 28, 2009
Summary
Transient stimulated Raman scattering generates pulses with 100% energy fluctuations. Quantum mechanical origins suggest these fluctuations may limit Raman generation stability, with near-zero energy being most probable.
Area of Science:
- Quantum optics
- Nonlinear optics
- Laser physics
Background:
- Stimulated Raman scattering (SRS) is a nonlinear optical process.
- Understanding pulse energy stability is crucial for applications.
Purpose of the Study:
- To calculate the probability distribution P(W) for the energy W of pulses generated by transient SRS.
- To investigate the origin and implications of macroscopic energy fluctuations in SRS.
Main Methods:
- Theoretical calculation of the probability distribution P(W).
- Analysis in the limit of large numbers of Stokes photons.
Main Results:
- Predicted 100% macroscopic fluctuations in pulse energy.
- P(W) found to be essentially exponential for large numbers of Stokes photons.
- Most probable Stokes pulse energy is near zero.
Conclusions:
- Macroscopic energy fluctuations in SRS are quantum mechanical in origin.
- These fluctuations may impose a fundamental limitation on the stability of the Raman generation process.
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