Measuring the electronic third-order susceptibility of the silicon phthalocyanine-monomethacrylate molecule with quadratic electroabsorption spectroscopy
Bibliographic record
Abstract
We report on a quadratic electroabsorption measurement of the electronic third-order molecular susceptibility of silicon phthalocyanine-monomethacrylate-doped poly(methyl methacrylate) thin films. The results are compared with homogeneously broadened (Lorentzian) and inhomogeneously broadened theories of the second hyperpolarizability. For the first time to our knowledge the effect of distribution of sites in the polymer is taken into account and is found to be negligible on its effects on chi(3). We show that a three-level model of the third-order susceptibility is sufficient to characterize the electronic states of these dye-doped thin films in the visible regime. The limited spectral range of the experiment allows us to estimate only the zero-frequency third-order molecular susceptibility, which we find is below the quantum-mechanical limit.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| 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 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".