Pulse Compression in Parametric Amplification
Why this work is in the frame
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Bibliographic record
Abstract
Abstract This article presents some of the phenomena associated with second‐order nonlinearities that can be exploited for pulse compression. This includes not only the optical pulse compression in second harmonic generation and parametric amplification, but also giant phase modulation leading to pulse compression in dispersive structures. The large bandwidth associated with ultrashort pulses and pulses with large phase modulation requires a theoretical treatment in the frequency domain, instead of considering the equations in the time domain with frequency‐dependent parameters. Our treatment in the frequency domain takes into account Sellmeier equations for the frequency dependence of the index of refraction, instead of a series expansion to first or second order. We also discuss applications in ultrashort pulse diagnostic and in predicting the autostabilization of optical parametric oscillators against cavity length fluctuations, by controlling the chirp of the pump and signal pulses.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it