Backward air lasing with femtosecond pumping
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The development of remotely pumped sources of backward-propagating impulsive radiation in ambient air (air lasers) is presently a very active research area, motivated by potential applications in remote atmospheric sensing [1]. The only approach that, so far, has succeeded in producing backward-propagating lasing with measurable energy in real air has been based on a two-step excitation scheme involving dissociation of molecular oxygen or nitrogen and subsequent two-photon pumping of the resulting oxygen or nitrogen atoms by laser radiation at specific deep-UV wavelengths [2]. These demonstrations utilized narrow-linewidth deep-UV pump lasers with pulse durations from hundreds of picoseconds to several nanoseconds. The important question about gain mechanisms responsible for the demonstrated laser-like emissions remains open, with the inversion-based gain, hyper-Raman gain and superradiance being suggested as operative mechanisms [3].
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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 | 0.001 |
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