Efficient high-power continuous-wave multi-slab Fe:ZnSe laser at 4.1 μm
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
We report high-efficiency continuous-wave operation of a cryogenically cooled Fe 2+ :ZnSe laser at 4.167 µm using a four-slab configuration (2.75 mm each, 4.3-7.9 × 10 18 cm -3 ) optimized for pump absorption and gain distribution. Cooled to 90 K and double-end pumped at 2.832 µm by two fiber-bulk hybrid Cr:ZnSe lasers (17 W and 13 W), the system achieved complete pump absorption (η a ≈ 99.68%), delivering 13.9 W output with 41% slope efficiency. Beam quality was near diffraction-limited (M X 2 =1.13±0.11,M Y 2 =1.24±0.12). The lasing wavelength red-shifted from 4.036 to 4.167 µm with power, attributed to thermal and gain-spectrum dynamics. This architecture mitigates thermal lensing and supports efficient mid-infrared power scaling.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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