Wavelength and temperature dependence of photorefractive effect in quasi-phase-matched LiNbO3 waveguides
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Bibliographic record
Abstract
The photorefractive effect (PRE) in quasi-phase-matched LiNbO3 waveguides is studied systematically by employing the pump-probe technique. It is found that the PRE is gradually eased with an increase of the device operation temperature. With increasing light irradiation power, the PRE becomes severe, the buildup (relaxation) time constant decreases (increases), while the second harmonic generation (SHG) efficiency is enhanced for the devices used in studies. The PRE under a shorter wavelength (980nm) light irradiation is much stronger than that at a longer wavelength one (1550nm), and the PRE for the latter is mainly caused by the SHG of the pump.
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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