Self-Q-switched and mode-locked erbium-ytterbium co-doped fiber laser
Bibliographic record
Abstract
We demonstrated a self-Q-switched mode-locked erbium-ytterbium co-doped fiber laser at 1570 nm. The repetition rate of Q-switched pulses increased from 3.25 kHz to 24.41 kHz, whereas pulse width reduced from 28.8 µs to 4.61 µs. Self-mode-locked pulses appeared inside Q-switched pulses just above the threshold and transitioned into mode-locked pulses beyond a pump power of 695 mW. The average output power, minimum pulse duration, and repetition rate of the mode-locked pulses were 160 mW, 340 ps, and 6.57 MHz, respectively, at a pump power of 2.4 W. Self Q-switched pulses were obtained at low pump power ranging from 205 mW to 694 mW. At high pump power, the Q-switched mode-locked pulses were switched entirely to a mode-locked regime. They stayed up to the maximum available pump power of 2.4 W. We presented the characteristics of the mode-locked laser and discussed their origin.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), 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".