Tunable second harmonic generation devices with an integrated micro-heater
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Bibliographic record
Abstract
We present design, fabrication and characterization of a novel integrated device for tuning the wavelength of quasi-phase matched (QPM) second harmonic generation (SHG) in a periodically poled lithium niobate (PPLN) wavelength converter. A Cr/Pt/Au thin film layer is deposited on a PPLN device with a polymer buffer layer to work as a micro-heater. Wavelength tuning is achieved by applying current to the micro-heater, which changes the effective period of QPM grating and thus the QPM wavelength through the thermal optics effect (TOE). In contrast to the conventional temperature tuning method based on a bulky oven, the proposed device has excellent characteristics such as compact, fast tuning speed and low power consumption.
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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 | 0.001 |
| 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