Optical constants
Refractive index of D2 (Deuterium)
Weber: n 0.230–0.579 µm
- Data
- tabulated n
- Range
- 0.2302–0.5791 µm
- Points
- 18
- Temperature
- 273.15 K
- Licence
- CC0-1.0
Plot
Click the plot to set the calculator wavelength.
At one wavelength
- Refractive index n
- 1.00014
- Extinction coefficient k
- 0
- Permittivity ε1
- 1.00028
- Permittivity ε2
- 0
- Absorption coefficient α
- 0 cm⁻¹
- Penetration depth δ = λ/(2πk)
- — nm
- Abbe number Vd
- —
- Chromatic dispersion dn/dλ
- -5.10670e-05 µm⁻¹
- Group index ng
- 1.00016
- Group velocity dispersion
- — fs²/mm
- Dispersion parameter D
- — ps/(nm·km)
- Photon energy
- 3.39683 eV
ε = (n + ik)², α = 4πk/λ, ng = n − λ dn/dλ, GVD = λ³/(2πc²) d²n/dλ², D = −(λ/c) d²n/dλ². Group-velocity dispersion is given for formula data only.
Use it in Lightsmith
Load this data in Python, simulate in one more line
pip install lightsmith
import lightsmith as ls
# D2 (Deuterium): Weber: n 0.230–0.579 µm
d2 = ls.fetch_refractiveindex("main", "D2", "Weber", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(d2.range_nm) # (230.209, 579.065) nm
eps = d2.eps([365]) # complex permittivityDownloads the original record once (pinned to the imported snapshot) and caches it.
import json, urllib.request
import lightsmith as ls
url = "https://materials.lightsmith.dev/v1/datasets/ds_442138d20d58/lightsmith"
d2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(d2.source) # citation and provenance travel with the dataAny dataset here, as the library's Tabulated material (d2/weber).
# ... load d2 as above, then:
sim = ls.Simulation(
particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=d2)],
medium_index=1.0,
wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=579, num=81),
)
res = ls.solve(sim) # exact Mie for a sphere
print(res.q_ext) # extinction efficiency at each wavelengthSame spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).
Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.
Comments and conditions
Conditions
- temperature
- 273.15 K
References
*Original source of data is unknown: "Handbook..." cites a paper that doesn't include any information on optical constants of Deuterium.
Cite
Handbook of Optical Materials, Marvin J. Weber. CRC Press 2003 [link]; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)
Data
18 rows as published| λ (µm) | n |
|---|---|
| 0.230209 | 1.0001568 |
| 0.234555 | 1.00015584 |
| 0.237999 | 1.0001551 |
| 0.244691 | 1.00015378 |
| 0.246407 | 1.00015347 |
| 0.25763 | 1.00015158 |
| 0.267499 | 1.00015014 |
| 0.275278 | 1.00014915 |
| 0.275971 | 1.00014906 |
| 0.289357 | 1.00014756 |
| 0.292541 | 1.00014725 |
| 0.334148 | 1.00014395 |
| 0.380166 | 1.0001416 |
| 0.410807 | 1.00014048 |
| 0.491604 | 1.0001385 |
| 0.546074 | 1.00013766 |
| 0.576959 | 1.00013731 |
| 0.579065 | 1.00013727 |
Optical transmission calculator
Free-standing sample in vacuum, normal incidence- Transmittance T
- —
- Reflectance R
- —
Fresnel reflection calculator
- Rp
- —
- Rs
- —
- R = (Rp+Rs)/2
- —
- Phase φp
- —
- Phase φs
- —
- Brewster angle θB
- —
- Critical angle θC
- —
0 °C