High peak intensity characterization and optimization with a tight-focusing transmission parabola
Why this work is in the frame
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Bibliographic record
Abstract
A transmission parabola is a tight-focusing on-axis parabolic reflector that potentially enables ultra-high intensities when combined with high-power laser pulses. We propose a method to characterize the peak intensity generated with this optic by measuring the laser beam wavefront after reflection. The focused electromagnetic field and the corresponding peak intensity at the focal plane are calculated using the Stratton-Chu formulation. Without wavefront corrections, the measured intensity is strongly degraded due to alignment constraints and the quality of the manufactured optic. The intensity reached is at most 6% of the ideal case, where the beam wavefront is perfectly flat and aberration-free. However, we demonstrate that the focused peak intensity can be improved substantially by correcting the laser beam wavefront with a deformable mirror. An intensity approaching 70% of the ideal case is obtained, thus showing the relevance of the transmission parabola for high-intensity applications.
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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 | 0.000 |
| 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) | 0.000 | 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