Optical constants

Refractive index of AlSb (Aluminium antimonide)

Zollner et al. 1989: n,k 0.214–0.886 µm

Data: tabulated nk
Range: 0.2138–0.8856 µm
Points: 45
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 4.02985
Extinction coefficient k: 0.00641791

Permittivity ε₁: 16.2397
Permittivity ε₂: 0.0517264

Absorption coefficient α: 1372.53 cm⁻¹
Penetration depth δ = λ/(2πk): 14571.6 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: -7.08955 µm⁻¹

Group index n_g: 8.19567
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

# AlSb (Aluminium antimonide): Zollner et al. 1989: n,k 0.214–0.886 µm
alsb = ls.fetch_refractiveindex("main", "AlSb", "Zollner", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(alsb.range_nm)  # (213.8, 885.6) nm
eps = alsb.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_c263b0c6a554/lightsmith"
alsb = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(alsb.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (alsb/zollner-1989).

# ... load alsb as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=alsb)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=885, 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

300 K

References

S. Zollner, C. Lin, E. Schönherr, A. Böhringer, M. Cardona. The dielectric function of AlSb from 1.4 to 5.8 eV determined by spectroscopic ellipsometry. J. Appl. Phys. 66, 383-387 (1989)

doi:10.1063/1.343888 The dielectric function of AlSb from 1.4 to 5.8 eV determined by spectroscopic ellipsometry, Journal of Applied Physics (1989)

Cite

Stefan Zollner, Chengtian Lin, Erich Schönherr, Alexandra Böhringer and Manuel Cardona. The dielectric function of AlSb from 1.4 to 5.8 eV determined by spectroscopic ellipsometry. Journal of Applied Physics, 66, 383-387 (1989), doi:10.1063/1.343888; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

45 rows as published

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

AlSb (Aluminium antimonide), Zollner et al. 1989: n,k 0.214–0.886 µm: n and k versus wavelength
λ (µm)	n	k
0.2138	1.0	2.4
0.2175	1.01	2.42
0.2214	1.04	2.46
0.2254	1.09	2.52
0.2296	1.17	2.58
0.2339	1.26	2.59
0.2384	1.31	2.58
0.2431	1.31	2.59
0.248	1.3	2.64
0.253	1.29	2.72
0.2583	1.3	2.84
0.2638	1.33	2.99
0.2695	1.38	3.16
0.2755	1.45	3.39
0.2818	1.59	3.7
0.2883	1.96	4.07
0.2952	2.6	4.22
0.3024	3.15	4.0
0.31	3.5	3.71
0.3179	3.71	3.4
0.3263	3.81	3.16
0.3351	3.91	2.97
0.3444	3.96	2.81
0.3542	3.95	2.69
0.3647	3.97	2.64
0.3757	4.14	2.69
0.3875	4.51	2.47
0.3999	4.57	2.12
0.4133	4.52	1.97
0.4275	4.66	2.06
0.4428	5.27	1.58
0.4592	5.08	0.92
0.4769	4.81	0.63
0.4959	4.61	0.46
0.5166	4.44	0.33
0.5391	4.31	0.24
0.5636	4.2	0.01
0.5904	4.01	0.006
0.6199	3.9	0.004
0.6525	3.81	0.003
0.6888	3.73	0.002
0.7293	3.66	0.001
0.7749	3.6	0.0003
0.8266	3.54	0.0002
0.8856	3.5	0.0001

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: —

AlSb (Aluminium antimonide): all datasets

Experimental data

Zollner et al. 1989: n,k 0.214–0.886 µm n,k 0.2138–0.8856 µm default

Models and simulations

About AlSb (Aluminium antimonide)

AlSb, or aluminum antimonide, is a III-V semiconductor compound with a zincblende crystal structure. It has a direct bandgap of approximately 1.6 eV at room temperature and is known for its high electron mobility, which makes it useful in high-frequency and high-speed electronic applications. AlSb is often utilized in heterostructures with other III-V materials, such as GaSb and InAs, to create devices like high-electron-mobility transistors (HEMTs) and infrared photodetectors. The material has a relatively low effective mass of electrons, which contributes to its high electron mobility and thereby makes it desirable for applications requiring rapid electron transport. AlSb is also of interest for thermophotovoltaic applications, given its narrow bandgap energy, which allows for efficient absorption of infrared radiation. However, the material poses challenges in terms of crystal growth and fabrication due to its sensitivity to defects and impurities. Additionally, antimonide-based materials like AlSb require stringent safety protocols due to the toxicity of antimony. Despite these challenges, AlSb continues to be a material of significant research interest, offering a combination of electrical and optical properties that are attractive for next-generation electronic and optoelectronic devices.

Aluminium antimonide - Wikipedia

More about AlSb (Aluminium antimonide) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/AlSb/nk/Zollner.yml
ID: ds_c263b0c6a554
API: /v1/datasets/ds_c263b0c6a554

Plot