Optical constants

Refractive index of InSb (Indium antimonide)

Aspnes and Studna 1983: n,k 0.207–0.827 µm

Data: tabulated nk
Range: 0.2066–0.8266 µm
Points: 46
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 4.1359
Extinction coefficient k: 1.77836

Permittivity ε₁: 13.9431
Permittivity ε₂: 14.7102

Absorption coefficient α: 380318 cm⁻¹
Penetration depth δ = λ/(2πk): 52.5875 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: 0.0373134 µm⁻¹

Group index n_g: 4.11397
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

# InSb (Indium antimonide): Aspnes and Studna 1983: n,k 0.207–0.827 µm
insb = ls.fetch_refractiveindex("main", "InSb", "Aspnes", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(insb.range_nm)  # (206.6, 826.6) nm
eps = insb.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_b6d610044aa8/lightsmith"
insb = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(insb.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (insb/aspnes-studna-1983).

# ... load insb as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=insb)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=826, 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.

Comments and conditions

Crysal orientation: <110>; Doping: 8×10¹⁵ cm^-3, n; Room temperature

References

D. E. Aspnes and A. A. Studna. Dielectric functions and optical parameters of Si, Ge, GaP, GaAs, GaSb, InP, InAs, and InSb from 1.5 to 6.0 eV. Phys. Rev. B 27, 985-1009 (1983)

doi:10.1103/physrevb.27.985 Dielectric functions and optical parameters of Si, Ge, GaP, GaAs, GaSb, InP, InAs, and InSb from 1.5 to 6.0 eV, Physical Review B (1983)

Cite

D. E. Aspnes and A. A. Studna. Dielectric functions and optical parameters of Si, Ge, GaP, GaAs, GaSb, InP, InAs, and InSb from 1.5 to 6.0 eV. Physical Review B, 27, 985-1009 (1983), doi:10.1103/physrevb.27.985; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

46 rows as published

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

InSb (Indium antimonide), Aspnes and Studna 1983: n,k 0.207–0.827 µm: n and k versus wavelength
λ (µm)	n	k
0.2066	0.861	2.139
0.2101	0.922	2.185
0.2138	0.969	2.21
0.2175	1.0	2.235
0.2214	1.025	2.275
0.2254	1.057	2.333
0.2296	1.116	2.394
0.2339	1.194	2.435
0.2384	1.27	2.444
0.2431	1.309	2.43
0.248	1.307	2.441
0.253	1.301	2.495
0.2583	1.312	2.576
0.2638	1.341	2.669
0.2695	1.385	2.776
0.2755	1.443	2.894
0.2818	1.515	3.034
0.2883	1.618	3.209
0.2952	1.791	3.433
0.3024	2.127	3.666
0.31	2.632	3.694
0.3179	3.044	3.479
0.3263	3.287	3.204
0.3351	3.427	2.933
0.3444	3.485	2.705
0.3542	3.511	2.517
0.3647	3.52	2.369
0.3757	3.525	2.217
0.3875	3.482	2.093
0.3999	3.419	2.015
0.4133	3.366	1.994
0.4275	3.342	2.004
0.4428	3.345	2.036
0.4592	3.377	2.083
0.4769	3.447	2.145
0.4959	3.57	2.221
0.5166	3.822	2.287
0.5391	4.111	2.06
0.5636	4.135	1.85
0.5904	4.136	1.77
0.6199	4.194	1.773
0.6525	4.433	1.873
0.6888	4.909	1.396
0.7293	4.754	0.949
0.7749	4.568	0.749
0.8266	4.418	0.643

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: —

InSb (Indium antimonide): all datasets

Experimental data

Aspnes and Studna 1983: n,k 0.207–0.827 µm n,k 0.2066–0.8266 µm default

Models and simulations

About InSb (Indium antimonide)

Indium antimonide (InSb) is a III-V compound semiconductor with a zinc blende crystal structure. It possesses a very narrow energy band gap and high electron mobility, which make it particularly useful in infrared detectors and infrared astronomy applications. The material is highly sensitive to temperature variations, a factor that must be accounted for in device design and operation. In addition to its utility in photodetectors, it is employed in Hall effect devices due to its excellent mobility properties. Its high electron mobility also makes it suitable for high-frequency and high-performance transistors. Indium antimonide wafers are typically grown using liquid phase epitaxy (LPE) or molecular beam epitaxy (MBE), and device fabrication often utilizes metal-organic chemical vapor deposition (MOCVD). Like many semiconductor materials, InSb must be handled carefully due to toxicity concerns.

More about InSb (Indium antimonide) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/InSb/nk/Aspnes.yml
ID: ds_b6d610044aa8
API: /v1/datasets/ds_b6d610044aa8

Plot