Photoinduced dichroism in thin films of amorphous As/sub 2/Se/sub 3/
Bibliographic record
Abstract
We have measured the dichroism in amorphous As/sub 2/Se/sub 3/ induced by a polarized beam of near band-gap light (632.8 nm). Most glassy material is initially isotropic and homogeneous. When As/sub 2/Se/sub 3/ absorbs an intense pump-beam of polarized light, the absorption coefficient for light polarized in the same direction as the pump-beam is less than for the perpendicular polarization, i.e. the sample becomes anisotropic (dichroic). Induced dichroism is potentially useful in various photonic devices including optical switches, optical memory, and polarizers. In our experiments, the total induced dichroism amounts to 0.24% after 10 minutes of illumination by polarized laser light (632.8 nm) with an intensity of 130 mW/cm/sup 2/. The induced dichroism is reversible by rotating the polarization of the pump light by 90/spl deg/. A total change of 0.48% is achieved between the two orthogonal states. We find that the time dependence of the induced dichroism fits a stretched exponential function.
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How this classification was reachedexpand
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) | 0.003 | 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 teacher head, 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".