A diode-pumped high power extended cavity femtosecond Yb:KGW laser: from development to applications in nonlinear microscopy
Bibliographic record
Abstract
We present the design and development of a diode-pumped high average power femtosecond laser based on a crystal of Yb-ion doped potassium gadolinium tungstate (Yb:KGW) and a semiconductor saturable absorber for passive mode-locking. The laser delivered up to 0.85 W of average power with ~200 fs pulses at a repetition rate of 14.6 MHz, corresponding to a pulse energy of 60 nJ with a peak power of ~300 kW. The developed laser system was used to visualize the structure of muscle cells from <i>Drosophila melanogaster </i>larvae <i>in vivo</i> by acquiring high-resolution images with a nonlinear multimodal scanning microscope, capable of simultaneous detection of two-photon fluorescence, second and third harmonic signals.
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How this classification was reachedexpand
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 | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".