Optical constants

Refractive index of InAs (Indium arsenide)

Aspnes and Studna 1983: n,k 0.21–0.83 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: 4.0996
Extinction coefficient k: 0.723493

Permittivity ε₁: 16.2833
Permittivity ε₂: 5.93206

Absorption coefficient α: 154726 cm⁻¹
Penetration depth δ = λ/(2πk): 129.261 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: -4.14179 µm⁻¹

Group index n_g: 6.53331
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

# InAs (Indium arsenide): Aspnes and Studna 1983: n,k 0.21–0.83 µm
inas = ls.fetch_refractiveindex("main", "InAs", "Aspnes", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(inas.range_nm)  # (206.6, 826.6) nm
eps = inas.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_3a8834bb1791/lightsmith"
inas = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(inas.source)  # citation and provenance travel with the data

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

# ... load inas as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=inas)],
    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: 2.7×10¹⁶ 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

InAs (Indium arsenide), Aspnes and Studna 1983: n,k 0.21–0.83 µm: n and k versus wavelength
λ (µm)	n	k
0.2066	1.434	2.112
0.2101	1.383	2.084
0.2138	1.333	2.102
0.2175	1.293	2.163
0.2214	1.276	2.248
0.2254	1.282	2.344
0.2296	1.312	2.449
0.2339	1.366	2.555
0.2384	1.436	2.646
0.2431	1.484	2.732
0.248	1.524	2.871
0.253	1.608	3.081
0.2583	1.803	3.349
0.2638	2.205	3.575
0.2695	2.705	3.581
0.2755	3.194	3.445
0.2818	3.644	3.042
0.2883	3.761	2.478
0.2952	3.615	2.099
0.3024	3.449	1.903
0.31	3.313	1.799
0.3179	3.208	1.743
0.3263	3.129	1.719
0.3351	3.069	1.715
0.3444	3.03	1.728
0.3542	3.008	1.754
0.3647	3.004	1.79
0.3757	3.018	1.836
0.3875	3.051	1.891
0.3999	3.108	1.957
0.4133	3.197	2.034
0.4275	3.337	2.129
0.4428	3.626	2.208
0.4592	3.911	2.016
0.4769	4.021	1.885
0.4959	4.364	1.786
0.5166	4.466	1.283
0.5391	4.331	0.991
0.5636	4.199	0.822
0.5904	4.088	0.712
0.6199	3.995	0.634
0.6525	3.917	0.572
0.6888	3.851	0.53
0.7293	3.798	0.493
0.7749	3.755	0.463
0.8266	3.714	0.432

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: —

InAs (Indium arsenide): all datasets

Experimental data

Models and simulations

Adachi 1989: n,k 0.207–12.4 µm n,k 0.2066–12.4 µm

About InAs (Indium arsenide)

Indium arsenide (InAs) is a compound semiconductor material that belongs to the III-V group of semiconductors. It is known for its high electron mobility and narrow energy band gap, making it particularly useful in high-speed electronics and optoelectronics. InAs is a key material in the manufacture of infrared detectors, including those used for night-vision systems, and is also used in the fabrication of quantum dot structures. The material can be grown via techniques such as molecular beam epitaxy (MBE) or metal-organic chemical vapor deposition (MOCVD), and is often used in conjunction with other III-V semiconductor materials like GaAs or InP to form heterostructures or quantum wells. It has applications in photodetectors, high-frequency transistors, and other optoelectronic devices. Care should be exercised when working with InAs due to the toxicity of arsenic.

More about InAs (Indium arsenide) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/InAs/nk/Aspnes.yml
ID: ds_3a8834bb1791
API: /v1/datasets/ds_3a8834bb1791

Plot