Optical constants

Refractive index of GaSb (Gallium antimonide)

Adachi 1989: n,k 0.207–12.4 µm

Data: tabulated nk
Range: 0.2066–12.4 µm
Points: 200
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 5.28425
Extinction coefficient k: 2.04965

Permittivity ε₁: 23.7222
Permittivity ε₂: 21.6617

Absorption coefficient α: 438337 cm⁻¹
Penetration depth δ = λ/(2πk): 45.627 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: 13.5774 µm⁻¹

Group index n_g: -2.69385
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

# GaSb (Gallium antimonide): Adachi 1989: n,k 0.207–12.4 µm
gasb = ls.fetch_refractiveindex("main", "GaSb", "Adachi", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(gasb.range_nm)  # (206.64, 12398) nm
eps = gasb.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_978f9fb31584/lightsmith"
gasb = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(gasb.source)  # citation and provenance travel with the data

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

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

S. Adachi. Optical dispersion relations for GaP, GaAs, GaSb, InP, InAs, InSb, Al_xGa_1−xAs, and In_1−xGa_xAs_yP_1−y. J. Appl. Phys. 66, 6030-6040 (1989)
[Calculation script (Python)]

doi:10.1063/1.343580 Optical dispersion relations for GaP, GaAs, GaSb, InP, InAs, InSb, Al x Ga1− x As, and In1− x Ga x As y P1− y, Journal of Applied Physics (1989)

Cite

Sadao Adachi. Optical dispersion relations for GaP, GaAs, GaSb, InP, InAs, InSb, Al x Ga1− x As, and In1− x Ga x As y P1− y. Journal of Applied Physics, 66, 6030-6040 (1989), doi:10.1063/1.343580; [Calculation script (Python)]; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

200 rows as published

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

GaSb (Gallium antimonide), Adachi 1989: n,k 0.207–12.4 µm: n and k versus wavelength
λ (µm)	n	k
0.20664	0.85237	2.3048
0.20767	0.85998	2.3222
0.2087	0.8678	2.3399
0.20975	0.87585	2.3579
0.21081	0.88413	2.3761
0.21188	0.89265	2.3947
0.21295	0.90143	2.4136
0.21404	0.91047	2.4328
0.21515	0.91979	2.4523
0.21626	0.92941	2.4721
0.21738	0.93934	2.4923
0.21852	0.94959	2.5129
0.21967	0.96018	2.5338
0.22083	0.97113	2.5551
0.222	0.98246	2.5768
0.22318	0.99419	2.5989
0.22438	1.0063	2.6214
0.22559	1.0189	2.6443
0.22681	1.032	2.6676
0.22805	1.0455	2.6914
0.2293	1.0596	2.7156
0.23057	1.0742	2.7403
0.23184	1.0895	2.7654
0.23314	1.1053	2.791
0.23444	1.1218	2.8171
0.23577	1.139	2.8437
0.2371	1.1569	2.8709
0.23845	1.1757	2.8985
0.23982	1.1952	2.9266
0.2412	1.2157	2.9553
0.2426	1.2371	2.9845
0.24402	1.2596	3.0142
0.24545	1.2831	3.0445
0.2469	1.3078	3.0753
0.24837	1.3337	3.1066
0.24985	1.3609	3.1384
0.25135	1.3895	3.1707
0.25287	1.4196	3.2035
0.25441	1.4514	3.2367
0.25597	1.4848	3.2703
0.25755	1.52	3.3043
0.25914	1.5572	3.3386
0.26076	1.5965	3.3731
0.26239	1.638	3.4078
0.26405	1.6818	3.4425
0.26573	1.7282	3.4771
0.26743	1.7771	3.5116
0.26915	1.8289	3.5457
0.27089	1.8836	3.5792
0.27266	1.9415	3.6119
0.27445	2.0025	3.6435
0.27626	2.0669	3.6739
0.2781	2.1348	3.7025
0.27996	2.2062	3.7291
0.28185	2.2813	3.7533
0.28376	2.3599	3.7745
0.2857	2.442	3.7923
0.28766	2.5276	3.8061
0.28966	2.6163	3.8155
0.29168	2.7079	3.8198
0.29372	2.8019	3.8185
0.2958	2.8979	3.8111
0.29791	2.9952	3.7972
0.30005	3.093	3.7763
0.30222	3.1905	3.7481
0.30442	3.2868	3.7126
0.30665	3.3809	3.6697
0.30891	3.4718	3.6197
0.31121	3.5585	3.563
0.31354	3.6401	3.5001
0.31591	3.7159	3.4317
0.31832	3.7852	3.3587
0.32076	3.8475	3.282
0.32324	3.9024	3.2027
0.32576	3.95	3.1218
0.32831	3.9902	3.0402
0.33091	4.0233	2.9589
0.33355	4.0496	2.8788
0.33623	4.0696	2.8005
0.33896	4.0837	2.7247
0.34173	4.0927	2.6518
0.34454	4.0969	2.5824
0.34741	4.0972	2.5166
0.35032	4.094	2.4547
0.35328	4.0879	2.3967
0.35629	4.0795	2.3428
0.35935	4.0692	2.2929
0.36246	4.0575	2.2468
0.36563	4.0448	2.2046
0.36886	4.0315	2.1662
0.37214	4.0179	2.1313
0.37548	4.0043	2.0998
0.37888	3.9909	2.0716
0.38235	3.978	2.0464
0.38588	3.9659	2.0242
0.38947	3.9546	2.0048
0.39313	3.9443	1.9879
0.39686	3.9352	1.9735
0.40066	3.9275	1.9613
0.40454	3.9212	1.9513
0.40849	3.9164	1.9433
0.41252	3.9132	1.9371
0.41663	3.9118	1.9327
0.42082	3.9123	1.9298
0.4251	3.9146	1.9284
0.42947	3.9189	1.9285
0.43392	3.9254	1.9297
0.43847	3.934	1.9321
0.44312	3.9448	1.9356
0.44786	3.958	1.9399
0.45271	3.9737	1.9452
0.45767	3.992	1.9511
0.46273	4.0129	1.9578
0.46791	4.0367	1.9649
0.4732	4.0634	1.9726
0.47862	4.0932	1.9805
0.48416	4.1264	1.9887
0.48983	4.163	1.9971
0.49564	4.2034	2.0055
0.50158	4.2479	2.0137
0.50767	4.2967	2.0217
0.51391	4.3502	2.0294
0.5203	4.4089	2.0364
0.52686	4.4733	2.0428
0.53358	4.5439	2.0482
0.54048	4.6214	2.0524
0.54756	4.7067	2.0552
0.55482	4.8006	2.0564
0.56228	4.9038	2.0558
0.56994	5.0165	2.0536
0.57782	5.1375	2.0505
0.58591	5.2613	2.0487
0.59424	5.3744	2.0534
0.60281	5.4533	2.0733
0.61162	5.3607	1.7844
0.6207	5.231	1.5088
0.63005	5.1004	1.2972
0.63969	4.9737	1.1071
0.64963	4.8563	0.92335
0.65988	4.7502	0.7389
0.67046	4.6565	0.55003
0.68138	4.5822	0.43209
0.69267	4.5257	0.42732
0.70433	4.4741	0.42194
0.7164	4.4269	0.41601
0.72889	4.3835	0.40954
0.74182	4.3435	0.40258
0.75521	4.3064	0.39515
0.7691	4.2719	0.38724
0.78351	4.2398	0.37886
0.79847	4.2098	0.36999
0.81402	4.1817	0.36058
0.83018	4.1554	0.35049
0.84699	4.1306	0.33892
0.8645	4.1041	0.32834
0.88275	4.0806	0.31856
0.90179	4.0587	0.30849
0.92166	4.0382	0.29813
0.94243	4.0188	0.28752
0.96416	4.0006	0.27666
0.98691	3.9834	0.26556
1.0108	3.9672	0.25426
1.0358	3.952	0.24277
1.0621	3.9377	0.2311
1.0898	3.9243	0.2193
1.119	3.9118	0.20739
1.1497	3.9002	0.1954
1.1822	3.8895	0.18339
1.2166	3.8797	0.17141
1.2531	3.8707	0.15951
1.2918	3.8627	0.14776
1.3329	3.8556	0.13623
1.3768	3.8494	0.12501
1.4237	3.8443	0.11415
1.4739	3.8403	0.10372
1.5277	3.8374	0.093662
1.5857	3.8358	0.083718
1.6482	3.8355	0.072714
1.7158	3.8365	0.050452
1.7892	3.8076	0.03979
1.8692	3.7941	0.038036
1.9566	3.7834	0.036267
2.0527	3.7743	0.034499
2.1586	3.7661	0.032736
2.2761	3.7588	0.030981
2.4071	3.7522	0.029235
2.5541	3.7461	0.027498
2.7203	3.7405	0.02577
2.9095	3.7354	0.02405
3.1271	3.7307	0.022339
3.3798	3.7264	0.020636
3.677	3.7225	0.01894
4.0315	3.7189	0.017252
4.4616	3.7158	0.015569
4.9945	3.7129	0.013893
5.6719	3.7104	0.012221
6.5619	3.7083	0.010555
7.7832	3.7064	0.0088918
9.5631	3.7049	0.0072324
12.398	3.7037	0.0055758

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: —

GaSb (Gallium antimonide): all datasets

Experimental data

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About GaSb (Gallium antimonide)

Gallium antimonide (GaSb) is a III-V compound semiconductor with a direct band gap of approximately 0.72 eV. It is well-suited for infrared (IR) applications, particularly in the mid- to long-wavelength IR range. Due to its narrow band gap, GaSb is often employed in optoelectronic devices like photodetectors, laser diodes, and infrared-emitting diodes. It also serves as a substrate for other III-V semiconductors like InAs and InSb, facilitating the creation of complex heterostructures with tailored electronic and optical properties. Gallium antimonide is known for its high electron mobility, making it appealing for high-speed electronic applications as well. Overall, GaSb is a versatile material with growing significance in advanced optoelectronic and electronic technologies.

More about GaSb (Gallium antimonide) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/GaSb/nk/Adachi.yml
ID: ds_978f9fb31584
API: /v1/datasets/ds_978f9fb31584

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