Optical constants

Refractive index of InP (Indium phosphide)

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: 3.35058
Extinction coefficient k: 0.303661

Permittivity ε₁: 11.1342
Permittivity ε₂: 2.03488

Absorption coefficient α: 64940.7 cm⁻¹
Penetration depth δ = λ/(2πk): 307.973 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: -0.660264 µm⁻¹

Group index n_g: 3.73856
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

# InP (Indium phosphide): Adachi 1989: n,k 0.207–12.4 µm
inp = ls.fetch_refractiveindex("main", "InP", "Adachi", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(inp.range_nm)  # (206.64, 12398) nm
eps = inp.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_caf1247157e4/lightsmith"
inp = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(inp.source)  # citation and provenance travel with the data

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

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

InP (Indium phosphide), Adachi 1989: n,k 0.207–12.4 µm: n and k versus wavelength
λ (µm)	n	k
0.20664	1.3317	1.9365
0.20767	1.3372	1.9529
0.2087	1.3429	1.9698
0.20975	1.3486	1.9872
0.21081	1.3545	2.0051
0.21188	1.3605	2.0236
0.21295	1.3666	2.0428
0.21404	1.3729	2.0626
0.21515	1.3794	2.0831
0.21626	1.3861	2.1043
0.21738	1.393	2.1264
0.21852	1.4002	2.1494
0.21967	1.4076	2.1733
0.22083	1.4154	2.1982
0.222	1.4236	2.2243
0.22318	1.4322	2.2515
0.22438	1.4412	2.28
0.22559	1.4509	2.3099
0.22681	1.4612	2.3413
0.22805	1.4723	2.3744
0.2293	1.4843	2.4092
0.23057	1.4974	2.446
0.23184	1.5117	2.4849
0.23314	1.5274	2.5261
0.23444	1.545	2.5698
0.23577	1.5646	2.6162
0.2371	1.5867	2.6654
0.23845	1.6118	2.7178
0.23982	1.6404	2.7736
0.2412	1.6734	2.8329
0.2426	1.7116	2.8958
0.24402	1.7561	2.9625
0.24545	1.8083	3.0328
0.2469	1.8697	3.1064
0.24837	1.9423	3.1828
0.24985	2.0283	3.2606
0.25135	2.1302	3.3379
0.25287	2.2504	3.4117
0.25441	2.3912	3.4775
0.25597	2.554	3.5293
0.25755	2.7379	3.559
0.25914	2.9389	3.558
0.26076	3.1487	3.518
0.26239	3.3545	3.4342
0.26405	3.5408	3.3077
0.26573	3.6939	3.1469
0.26743	3.8048	2.9656
0.26915	3.8722	2.7791
0.27089	3.9005	2.6005
0.27266	3.8979	2.4383
0.27445	3.8733	2.297
0.27626	3.8344	2.1772
0.2781	3.7877	2.078
0.27996	3.7377	1.9971
0.28185	3.6874	1.9319
0.28376	3.639	1.8801
0.2857	3.5938	1.8394
0.28766	3.5523	1.8079
0.28966	3.5151	1.7839
0.29168	3.4822	1.766
0.29372	3.4535	1.7533
0.2958	3.4291	1.7446
0.29791	3.4087	1.7394
0.30005	3.3922	1.7368
0.30222	3.3793	1.7366
0.30442	3.3698	1.7381
0.30665	3.3637	1.7412
0.30891	3.3608	1.7454
0.31121	3.3608	1.7505
0.31354	3.3637	1.7564
0.31591	3.3693	1.7628
0.31832	3.3776	1.7697
0.32076	3.3885	1.7768
0.32324	3.4019	1.7842
0.32576	3.4177	1.7916
0.32831	3.4361	1.799
0.33091	3.4569	1.8063
0.33355	3.4801	1.8134
0.33623	3.5058	1.8203
0.33896	3.5341	1.8269
0.34173	3.5649	1.8332
0.34454	3.5985	1.8389
0.34741	3.6348	1.8442
0.35032	3.6741	1.8489
0.35328	3.7165	1.8528
0.35629	3.7622	1.856
0.35935	3.8115	1.8584
0.36246	3.8647	1.8597
0.36563	3.9221	1.8599
0.36886	3.9843	1.8588
0.37214	4.0515	1.8564
0.37548	4.1243	1.8524
0.37888	4.2032	1.8469
0.38235	4.2881	1.8399
0.38588	4.3784	1.8318
0.38947	4.4713	1.824
0.39313	4.5599	1.8191
0.39686	4.6314	1.822
0.40066	4.8394	2.2327
0.40454	4.6848	1.9013
0.40849	4.5609	1.6943
0.41252	4.4394	1.5217
0.41663	4.3225	1.3621
0.42082	4.2127	1.2066
0.4251	4.111	1.0506
0.42947	4.018	0.89159
0.43392	3.9525	0.82218
0.43847	3.902	0.80147
0.44312	3.8552	0.77974
0.44786	3.8119	0.75712
0.45271	3.7716	0.73374
0.45767	3.734	0.70974
0.46273	3.699	0.68525
0.46791	3.6663	0.66038
0.4732	3.6357	0.63525
0.47862	3.6071	0.61
0.48416	3.5803	0.58475
0.48983	3.5553	0.55961
0.49564	3.5319	0.53472
0.50158	3.5101	0.51021
0.50767	3.4897	0.48622
0.51391	3.4708	0.46291
0.5203	3.4533	0.44041
0.52686	3.4371	0.41889
0.53358	3.4223	0.39853
0.54048	3.4086	0.37949
0.54756	3.3962	0.36196
0.55482	3.385	0.34615
0.56228	3.375	0.33227
0.56994	3.3661	0.32052
0.57782	3.3583	0.31117
0.58591	3.3517	0.30444
0.59424	3.3462	0.3006
0.60281	3.3418	0.29994
0.61162	3.3385	0.30161
0.6207	3.3361	0.30314
0.63005	3.3345	0.30441
0.63969	3.3337	0.30536
0.64963	3.3338	0.30597
0.65988	3.3347	0.30618
0.67046	3.3365	0.30593
0.68138	3.3392	0.30515
0.69267	3.3428	0.30376
0.70433	3.3473	0.30166
0.7164	3.3528	0.29875
0.72889	3.3593	0.29487
0.74182	3.3668	0.28985
0.75521	3.3754	0.28346
0.7691	3.3851	0.27543
0.78351	3.3959	0.26535
0.79847	3.4079	0.25265
0.81402	3.4211	0.23645
0.83018	3.4355	0.21507
0.84699	3.4512	0.18372
0.8645	3.4393	0.14227
0.88275	3.4373	0.12046
0.90179	3.4419	0.086742
0.92166	3.4137	0.0069603
0.94243	3.3591	0.0068642
0.96416	3.3293	0.0067188
0.98691	3.3068	0.0065603
1.0108	3.2883	0.0063959
1.0358	3.2724	0.0062284
1.0621	3.2583	0.0060593
1.0898	3.2457	0.0058897
1.119	3.2342	0.0057201
1.1497	3.2237	0.0055508
1.1822	3.214	0.0053822
1.2166	3.2049	0.0052145
1.2531	3.1965	0.0050476
1.2918	3.1887	0.0048818
1.3329	3.1813	0.0047171
1.3768	3.1744	0.0045535
1.4237	3.1679	0.0043911
1.4739	3.1617	0.0042297
1.5277	3.1559	0.0040696
1.5857	3.1505	0.0039105
1.6482	3.1453	0.0037526
1.7158	3.1404	0.0035957
1.7892	3.1358	0.0034399
1.8692	3.1315	0.0032851
1.9566	3.1274	0.0031313
2.0527	3.1236	0.0029784
2.1586	3.12	0.0028264
2.2761	3.1166	0.0026753
2.4071	3.1134	0.002525
2.5541	3.1105	0.0023755
2.7203	3.1077	0.0022267
2.9095	3.1051	0.0020787
3.1271	3.1028	0.0019312
3.3798	3.1006	0.0017844
3.677	3.0986	0.0016382
4.0315	3.0967	0.0014924
4.4616	3.0951	0.0013471
4.9945	3.0936	0.0012023
5.6719	3.0923	0.0010578
6.5619	3.0912	0.00091368
7.7832	3.0902	0.00076983
9.5631	3.0894	0.00062623
12.398	3.0888	0.00048282

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: —

InP (Indium phosphide): all datasets

Experimental data

Models and simulations

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

About InP (Indium phosphide)

Indium phosphide (InP) is a binary semiconductor composed of indium and phosphorus, belonging to the III-V group of semiconductors. It offers a high electron mobility and a direct bandgap, making it especially useful for optoelectronic devices that operate in the infrared and visible spectra. InP is widely used as a substrate material for epitaxial growth of other III-V semiconductors, such as GaAs and InGaAs, and is essential for constructing high-speed transistors and photonic integrated circuits. The material is often grown using molecular beam epitaxy (MBE) or metal-organic chemical vapor deposition (MOCVD). InP is particularly important in the fabrication of high-performance light-emitting diodes (LEDs), laser diodes, and waveguide-based photonic components. It's also a key material for fiber-optic communication systems. Handling InP requires caution due to the toxicity of its constituent elements.

More about InP (Indium phosphide) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/InP/nk/Adachi.yml
ID: ds_caf1247157e4
API: /v1/datasets/ds_caf1247157e4

Plot