Optical constants

Refractive index of SiO (Silicon monoxide)

Hass and Salzberg 1954: n,k 0.24–14.0 µm

Data: tabulated n + tabulated k
Range: 0.24–14 µm
Points: 98
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 1.96904
Extinction coefficient k: 0.001

Permittivity ε₁: 3.8771
Permittivity ε₂: 0.00393807

Absorption coefficient α: 213.859 cm⁻¹
Penetration depth δ = λ/(2πk): 93519.4 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: -0.282051 µm⁻¹

Group index n_g: 2.13477
Group velocity dispersion: — fs²/mm

Dispersion parameter D: — ps/(nm·km)
Photon energy: 2.11001 eV

ε = (n + ik)², α = 4πk/λ, n_g = 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

# SiO (Silicon monoxide): Hass and Salzberg 1954: n,k 0.24–14.0 µm
sio = ls.fetch_refractiveindex("main", "SiO", "Hass", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(sio.range_nm)  # (240, 14000) nm
eps = sio.eps([633])  # complex permittivity

Downloads 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_927a070d5c94/lightsmith"
sio = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(sio.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (sio/hass-salzberg-1954).

# ... load sio as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=sio)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=1000, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength

Same spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).

Materials guide Open a sphere of it in Studio Quick start Ask the community

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.

References

G. Hass and C. D. Salzberg. Optical properties of silicon monoxide in the wavelength region from 0.24 to 14.0 microns. J. Opt. Soc. Am. 44, 181-183 (1954) (Data points extracted from a figure)

doi:10.1364/josa.44.000181 Optical Properties of Silicon Monoxide in the Wavelength Region from 024 to 140 Microns*, Journal of the Optical Society of America (1954)

Cite

Georg Hass and Calvin D. Salzberg. Optical Properties of Silicon Monoxide in the Wavelength Region from 024 to 140 Microns*. Journal of the Optical Society of America, 44, 181 (1954), doi:10.1364/josa.44.000181; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

Computed on 98 wavelengths, the same grid as the API and the library

CSV comma separated TXT tab separated YAML n, k Full database record original YAML All quantities CSV JSON metadata

SiO (Silicon monoxide), Hass and Salzberg 1954: n,k 0.24–14.0 µm: n and k versus wavelength
λ (µm)	n	k
0.24	1.847	0.7
0.261	1.933	0.608619
0.281	2.051	0.52405
0.3	2.161	0.43
0.312	2.216	0.37912
0.328	2.246	0.3155
0.338	2.255	0.2871667
0.35	2.259	0.2531667
0.36	2.255	0.2248333
0.37	2.237	0.1965
0.378	2.213	0.1776296
0.388	2.18	0.1568889
0.397	2.158	0.1382222
0.411	2.125	0.1152609
0.423	2.096	0.097
0.432	2.078	0.08557692
0.443	2.059	0.07161538
0.458	2.041	0.05824
0.471	2.023	0.04992
0.483	2.01	0.04152
0.5	1.999	0.02915
0.516	1.99	0.01555
0.529	1.985	0.01061905
0.548	1.979	0.005454545
0.57	1.974	0.001
0.609	1.963	0.0009775
0.66	1.949	0.00085
0.7	1.942	0.00075
0.78	1.933	0.00055
0.829	1.926	0.0004275
0.872	1.919	0.00032
0.9	1.916	0.00025
0.961	1.912	9.750000e-05
1	1.907	0
2	1.853	0
3	1.822	0
4	1.797	0
5	1.743	0
6	1.694	0
6.39	1.668	0
6.66	1.648	0
7	1.602	0
7.19	1.55	0
7.4	1.477	0
7.57	1.402	0
7.72	1.324	0
7.83	1.259	0
7.94	1.192	0
8.03	1.147	0.0015625
8.14	1.077	0.007291667
8.28	0.999	0.03865882
8.47	0.919	0.1622069
8.55	0.891	0.2303835
8.67	0.876	0.3458722
8.83	0.871	0.5083595
8.98	0.881	0.675095
9.08	0.905	0.7823051
9.22	0.97	0.9294237
9.36	1.059	1.060504
9.49	1.156	1.160219
9.59	1.246	1.226728
9.68	1.36	1.27674
9.76	1.48	1.30714
9.89	1.684	1.340091
10.02	1.906	1.345
10.11	2.09	1.332273
10.17	2.252	1.317667
10.25	2.431	1.284571
10.29	2.548	1.254857
10.36	2.641	1.160833
10.47	2.743	0.971
10.56	2.807	0.815
10.69	2.847	0.654
10.79	2.852	0.5572308
10.89	2.851	0.4805385
11.03	2.826	0.3823333
11.13	2.794	0.339
11.25	2.749	0.2969545
11.36	2.691	0.2614545
11.46	2.616	0.2382
11.57	2.529	0.2151
11.65	2.446	0.1994118
11.71	2.374	0.1877647
11.76	2.311	0.1792353
11.84	2.251	0.1731176
11.92	2.201	0.167
12.03	2.146	0.1639444
12.12	2.116	0.1623636
12.29	2.089	0.1654545
12.45	2.068	0.1721905
12.61	2.058	0.1798095
12.82	2.048	0.1901739
13.03	2.045	0.20136
13.21	2.037	0.21144
13.39	2.027	0.2275833
13.6	2.024	0.2456667
13.76	2.016	0.2618
14	2.005	0.293

Optical transmission calculator

Free-standing sample in vacuum, normal incidence

Transmittance T: —
Reflectance R: —

Fresnel reflection calculator

R_p: —
R_s: —
R = (R_p+R_s)/2: —
Phase φ_p: —
Phase φ_s: —
Brewster angle θ_B: —
Critical angle θ_C: —

SiO (Silicon monoxide): all datasets

Thin film

About SiO (Silicon monoxide)

Silicon monoxide (SiO) is an inorganic compound that is a dark brown or black powder at room temperature. Unlike its stable counterpart silicon dioxide (SiO₂), SiO is a highly reactive compound. SiO sublimates (converts directly from a solid to a gas) at elevated temperatures and can further oxidize to SiO₂ upon exposure to air. Due to its reactivity, it is typically prepared and handled under controlled conditions. In the realm of thin-film deposition, SiO is utilized for its dielectric properties and as a component for various optical coatings. It's often evaporated in a vacuum to produce films that are used as protective or antireflection coatings in optics and electronics. The ability of SiO to act as a barrier against oxygen and moisture has also garnered interest for potential applications in encapsulating sensitive devices.

Silicon monoxide - Wikipedia

More about SiO (Silicon monoxide) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/SiO/nk/Hass.yml
ID: ds_927a070d5c94
API: /v1/datasets/ds_927a070d5c94

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