Optical constants
Refractive index of GaP-InP (Gallium indium phosphide, GaInP)
Ferrini et al. 2002: n,k 0.225–0.653 µm
- Data
- tabulated nk
- Range
- 0.2254–0.6525 µm
- Points
- 37
- State
- gas
- Licence
- CC0-1.0
Plot
Click the plot to set the calculator wavelength.
At one wavelength
- Refractive index n
- 3.64687
- Extinction coefficient k
- 0.167552
- Permittivity ε1
- 13.2716
- Permittivity ε2
- 1.22208
- Absorption coefficient α
- 35832.6 cm⁻¹
- Penetration depth δ = λ/(2πk)
- 558.151 nm
- Abbe number Vd
- —
- Chromatic dispersion dn/dλ
- -1.3806 µm⁻¹
- Group index ng
- 4.4581
- Group velocity dispersion
- — fs²/mm
- Dispersion parameter D
- — ps/(nm·km)
- Photon energy
- 2.11001 eV
ε = (n + ik)², α = 4πk/λ, ng = 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
# GaP-InP (Gallium indium phosphide, GaInP): Ferrini et al. 2002: n,k 0.225–0.653 µm
gap_inp = ls.fetch_refractiveindex("other", "GaP-InP", "Ferrini-UV-VIS", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(gap_inp.range_nm) # (225.4, 652.5) nm
eps = gap_inp.eps([633]) # complex permittivityDownloads 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_b67a5a41cb21/lightsmith"
gap_inp = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(gap_inp.source) # citation and provenance travel with the dataAny dataset here, as the library's Tabulated material (gap-inp/ferrini-2002-uv-vis).
# ... load gap_inp as above, then:
sim = ls.Simulation(
particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=gap_inp)],
medium_index=1.0,
wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=652, num=81),
)
res = ls.solve(sim) # exact Mie for a sphere
print(res.q_ext) # extinction efficiency at each wavelengthSame spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).
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
Conditions
- substrate
- GaAs
- film thickness
- 3.15e-6
References
- doi:10.1140/epjb/e2002-00177-x Optical functions of InGaP/GaAs epitaxial layers from 0.01 to 5.5 eV, The European Physical Journal B - Condensed Matter (2002)
Cite
R. Ferrini et al.. Optical functions of InGaP/GaAs epitaxial layers from 0.01 to 5.5 eV. The European Physical Journal B - Condensed Matter, 27, 449-458 (2002), doi:10.1140/epjb/e2002-00177-x; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)
Data
37 rows as published| λ (µm) | n | k |
|---|---|---|
| 0.2254 | 1.943 | 3.236 |
| 0.2296 | 2.009 | 3.317 |
| 0.2339 | 2.098 | 3.439 |
| 0.2384 | 2.255 | 3.604 |
| 0.2431 | 2.528 | 3.765 |
| 0.248 | 2.914 | 3.834 |
| 0.253 | 3.352 | 3.755 |
| 0.2583 | 3.741 | 3.493 |
| 0.2638 | 3.981 | 3.126 |
| 0.2695 | 4.061 | 2.753 |
| 0.2755 | 4.027 | 2.451 |
| 0.2818 | 3.945 | 2.241 |
| 0.2883 | 3.861 | 2.105 |
| 0.2952 | 3.795 | 2.017 |
| 0.3024 | 3.75 | 1.959 |
| 0.31 | 3.722 | 1.922 |
| 0.3179 | 3.713 | 1.901 |
| 0.3263 | 3.723 | 1.898 |
| 0.3351 | 3.76 | 1.91 |
| 0.3444 | 3.836 | 1.938 |
| 0.3542 | 3.982 | 1.98 |
| 0.3647 | 4.263 | 1.964 |
| 0.3757 | 4.574 | 1.716 |
| 0.3875 | 4.677 | 1.26 |
| 0.3999 | 4.604 | 0.863 |
| 0.4133 | 4.416 | 0.639 |
| 0.4275 | 4.244 | 0.518 |
| 0.4428 | 4.107 | 0.442 |
| 0.4592 | 3.999 | 0.391 |
| 0.4769 | 3.918 | 0.351 |
| 0.4959 | 3.853 | 0.306 |
| 0.5166 | 3.788 | 0.261 |
| 0.5391 | 3.727 | 0.228 |
| 0.5636 | 3.68 | 0.198 |
| 0.5904 | 3.643 | 0.164 |
| 0.6199 | 3.612 | 0.123 |
| 0.6525 | 3.588 | 0.077 |
Optical transmission calculator
Free-standing sample in vacuum, normal incidence- Transmittance T
- —
- Reflectance R
- —
Fresnel reflection calculator
- Rp
- —
- Rs
- —
- R = (Rp+Rs)/2
- —
- Phase φp
- —
- Phase φs
- —
- Brewster angle θB
- —
- Critical angle θC
- —
Ga0.51In0.49P. Undoped lattice matched film grown lattice matched on GaAs substrates, by metal-organic vapour phase epitaxy (MOVPE) at 700 °C.