An electrically pumped 239 nm AlGaN nanowire laser operating at room temperature
Why this work is in the frame
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Bibliographic record
Abstract
In this work, we report on the demonstration of an electrically injected AlGaN nanowire laser operating at 239 nm at room temperature. Vertically aligned Al-rich AlGaN nanowires are grown on Si substrate by plasma-assisted molecular beam epitaxy. It is observed that the randomly distributed AlGaN nanowires can strongly confine photons in the deep ultraviolet wavelength range, due to the recurrent multiple scattering of light and the inversely tapered nanowire geometry. The laser exhibits a very low threshold current of 0.35 mA at room temperature. From the detailed rate equation analysis, the spontaneous emission coupling factor is derived to be around 0.012.
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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