New pumping schemes for the Tm-doped ZBLAN blue upconversion fiber laser operating at 455 nm
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Bibliographic record
Abstract
re present a model for a 455 nm thulium-doped ZBLAN fiber laser co-pumped at 645, 684 and 1064 nm. This model calculates the blue laser output power using a rate equation analysis and takes into account the cross-relaxation and cooperative upconversion processes. We calculate the optimal pump wavelength for the case of a single visible pump wavelength, and then show the benefits of adding the second visible pump wavelength at 684 nm for a low 1064 nm pump power (120 mW). At high infrared pump powers (≥600 mW), we then show that adding the second pump does not increase the efficiency of the laser. These results are explained by studying the population densities of the energy levels of the thulium ions for each pumping configuration.
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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 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 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