Modèle du coefficient d'extinction de l'eau de 200nm à 200μm en Python

Hale, George M., and Marvin R. Querry. "Optical constants of water in the 200-nm to 200-μ m wavelength region." Applied optics 12.3 (1973): 555-563.

from UliEngineering.Chemistry.Absorption import HaleQuerryAbsorptionModel
from UliEngineering.EngineerIO import EngineerIO

wavelength_nm = 1500  # nm
model = HaleQuerryAbsorptionModel()
ext_coeff = model(wavelength_nm)
formatted = EngineerIO.instance().format(ext_coeff, unit="1/m")
print(f"Extinction coefficient at {wavelength_nm} nm: {formatted}")

import matplotlib.pyplot as plt
from matplotlib.ticker import FuncFormatter
from UliEngineering.Chemistry.Absorption import HaleQuerryAbsorptionModel, absorption_length_from_absorption_coefficient
from UliEngineering.EngineerIO import format_value

plt.style.use("ggplot")
model = HaleQuerryAbsorptionModel()
wavelengths = [d.wavelength for d in model.datapoints]  # in nm
abs_coeffs = [d.absorption_coefficient for d in model.datapoints]
abs_lengths = [absorption_length_from_absorption_coefficient(ac) for ac in abs_coeffs]

fig, ax1 = plt.subplots(figsize=(12, 5))
color1 = "tab:blue"
color2 = "tab:red"

ax1.set_xlabel("Wavelength (nm)")
ax1.set_ylabel("Absorption coefficient (1/m)", color=color1)
ax1.loglog(wavelengths, abs_coeffs, marker="o", linestyle="-", color=color1, label="Extinction coefficient")
ax1.tick_params(axis="y", labelcolor=color1)
ax1.yaxis.set_minor_locator(plt.NullLocator())  # Hide minor y ticks
ax1.xaxis.set_major_formatter(FuncFormatter(lambda x, p: format_value(x, "m")))

ax2 = ax1.twinx()
ax2.set_ylabel("Absorption length (m)", color=color2)
ax2.loglog(wavelengths, abs_lengths, marker="s", linestyle="--", color=color2, label="Absorption length (1/e)")
ax2.tick_params(axis="y", labelcolor=color2)
ax2.yaxis.set_minor_locator(plt.NullLocator())  # Hide minor y ticks
ax2.yaxis.set_major_formatter(FuncFormatter(lambda x, p: format_value(x, "m")))
ax2.xaxis.set_major_formatter(FuncFormatter(lambda x, p: format_value(x, "m")))

plt.title("Hale-Querry Water Extinction Coefficient and Absorption Length")
fig.tight_layout()
plt.grid(True, which="both", ls="--")