The file is already merged into a single workbook **Book1** with 15 power columns (5–100 µW) and an energy axis (eV). Suggested fit range is **1.23–1.45 eV**. No Si/reference folder exists, so I'll despike then run the Lorentzian power-dependence fit directly.

Despiking first (mandatory before any fit):



![Power Fit]([file link removed])

Done. All 15 power spectra (5–100 µW) were despiked, Lorentzian-fitted, and the two power-dependence panels were built with allometric fits. Every column converged to **HIGH** tier (R² = 0.887–0.984, SNR 7.6–24).

**Per-power peak parameters (Lorentzian fit):**

| Power (µW) | Intensity (counts) | xc (eV) | FWHM (meV) |
|---|---|---|---|
| 5 | 98.8 | 1.3206 | 62.4 |
| 10 | 189.9 | 1.3244 | 64.4 |
| 15 | 267.9 | 1.3264 | 64.1 |
| 20 | 353.8 | 1.3278 | 62.7 |
| 25 | 425.2 | 1.3290 | 61.7 |
| 30 | 516.0 | 1.3300 | 61.3 |
| 35 | 564.8 | 1.3304 | 60.8 |
| 40 | 694.6 | 1.3315 | 59.3 |
| 45 | 738.5 | 1.3318 | 59.1 |
| 50 | 818.3 | 1.3328 | 59.0 |
| 60 | 935.9 | 1.3332 | 58.0 |
| 70 | 1140.4 | 1.3343 | 57.1 |
| 80 | 1264.7 | 1.3345 | 56.3 |
| 90 | 1538.0 | 1.3351 | 55.3 |
| 100 | 1714.6 | 1.3356 | 54.4 |

**Allometric fits (I = a·Pᵇ):**

- **Intensity vs power:** $I = a\,P^{b}$, $a = 16.28 \pm 1.81$, **$b = 1.0048 \pm 0.0261$**, R² = 0.995 → essentially **linear (excitonic)** power dependence.
- **Peak position vs power:** monotonic **blueshift** from 1.3206 → 1.3356 eV (+15 meV across the range), saturating; slope ≈ **+5.0 meV/decade**.

📥 [power_fit_results.csv]([file link removed])

RESULT: b = 1.0048 ± 0.0261