Optical constants

Refractive index of C₉H₁₀O₃ (Ethyl salicylate)

Rheims et al. 1997: n 0.589–1.05 µm

Data: formula 5
Range: 0.5893–1.05 µm
Temperature: 293 K
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 1.50832
Extinction coefficient k: 0

Permittivity ε₁: 2.27504
Permittivity ε₂: 0

Absorption coefficient α: 0 cm⁻¹
Penetration depth δ = λ/(2πk): — nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: -0.0382044 µm⁻¹

Group index n_g: 1.53839
Group velocity dispersion: 130.939 fs²/mm

Dispersion parameter D: -398.218 ps/(nm·km)
Photon energy: 1.5754 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

# C9H10O3 (Ethyl salicylate): Rheims et al. 1997: n 0.589–1.05 µm
c9h10o3 = ls.fetch_refractiveindex("organic", "ethyl_salicylate", "Rheims", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(c9h10o3.range_nm)  # (589.3, 1050) nm
eps = c9h10o3.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_c122e415e275/lightsmith"
c9h10o3 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(c9h10o3.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (ethyl-salicylate/rheims-1997).

# ... load c9h10o3 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=c9h10o3)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=590, 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.

Dispersion formula

Cauchy (formula 5), λ in µm

n = 1.49376 + 0.00873 λ^{- 2.0} + 0.00018 λ^{- 4.0}

Valid from 0.5893 to 1.05 µm.

Coefficients as stored

C_i	Value
C1	1.49376
C2	0.00873
C3	-2.0
C4	0.00018
C5	-4.0

Comments and conditions

20 °C

Conditions

temperature: 293 K

References

J. Rheims, J Köser, T Wriedt. Refractive-index measurements in the near-IR using an Abbe refractometer. Meas. Sci. Technol. 8, 601-605 (1997)

doi:10.1088/0957-0233/8/6/003 Refractive-index measurements in the near-IR using an Abbe refractometer, Measurement Science and Technology (1997)

Cite

J Rheims, J Köser and T Wriedt. Refractive-index measurements in the near-IR using an Abbe refractometer. Measurement Science and Technology, 8, 601-605 (1997), doi:10.1088/0957-0233/8/6/003; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

Computed on 400 wavelengths, the same grid as the API and the library

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

C9H10O3 (Ethyl salicylate), Rheims et al. 1997: n 0.589–1.05 µm: n and k versus wavelength
λ (µm)	n
0.5893	1.520391
0.590154	1.52031
0.591009	1.520229
0.591865	1.520148
0.592722	1.520068
0.593581	1.519987
0.594441	1.519907
0.595302	1.519828
0.596164	1.519748
0.597028	1.519669
0.597893	1.51959
0.598759	1.519511
0.599627	1.519433
0.600495	1.519354
0.601365	1.519276
0.602236	1.519199
0.603109	1.519121
0.603983	1.519044
0.604858	1.518967
0.605734	1.51889
0.606611	1.518814
0.60749	1.518737
0.60837	1.518661
0.609252	1.518586
0.610134	1.51851
0.611018	1.518435
0.611903	1.51836
0.61279	1.518285
0.613677	1.51821
0.614566	1.518136
0.615457	1.518062
0.616348	1.517988
0.617241	1.517914
0.618135	1.517841
0.619031	1.517768
0.619928	1.517695
0.620826	1.517622
0.621725	1.51755
0.622626	1.517477
0.623528	1.517405
0.624431	1.517333
0.625336	1.517262
0.626242	1.517191
0.627149	1.517119
0.628058	1.517049
0.628967	1.516978
0.629879	1.516907
0.630791	1.516837
0.631705	1.516767
0.63262	1.516697
0.633536	1.516628
0.634454	1.516559
0.635373	1.516489
0.636294	1.516421
0.637216	1.516352
0.638139	1.516283
0.639063	1.516215
0.639989	1.516147
0.640916	1.516079
0.641845	1.516012
0.642775	1.515944
0.643706	1.515877
0.644638	1.51581
0.645572	1.515743
0.646507	1.515677
0.647444	1.515611
0.648382	1.515544
0.649321	1.515479
0.650262	1.515413
0.651204	1.515347
0.652147	1.515282
0.653092	1.515217
0.654038	1.515152
0.654986	1.515087
0.655935	1.515023
0.656885	1.514959
0.657836	1.514895
0.658789	1.514831
0.659744	1.514767
0.6607	1.514704
0.661657	1.51464
0.662615	1.514577
0.663575	1.514514
0.664537	1.514452
0.665499	1.514389
0.666463	1.514327
0.667429	1.514265
0.668396	1.514203
0.669364	1.514141
0.670334	1.51408
0.671305	1.514018
0.672277	1.513957
0.673251	1.513896
0.674227	1.513836
0.675203	1.513775
0.676182	1.513715
0.677161	1.513654
0.678142	1.513594
0.679125	1.513535
0.680108	1.513475
0.681094	1.513416
0.68208	1.513356
0.683068	1.513297
0.684058	1.513238
0.685049	1.51318
0.686041	1.513121
0.687035	1.513063
0.688031	1.513005
0.689027	1.512947
0.690026	1.512889
0.691025	1.512832
0.692026	1.512774
0.693029	1.512717
0.694033	1.51266
0.695038	1.512603
0.696045	1.512546
0.697053	1.51249
0.698063	1.512433
0.699075	1.512377
0.700087	1.512321
0.701102	1.512265
0.702117	1.51221
0.703134	1.512154
0.704153	1.512099
0.705173	1.512044
0.706195	1.511989
0.707218	1.511934
0.708242	1.511879
0.709268	1.511825
0.710296	1.511771
0.711325	1.511717
0.712355	1.511663
0.713387	1.511609
0.714421	1.511555
0.715456	1.511502
0.716492	1.511449
0.71753	1.511395
0.71857	1.511343
0.719611	1.51129
0.720653	1.511237
0.721697	1.511185
0.722743	1.511132
0.72379	1.51108
0.724838	1.511028
0.725888	1.510976
0.72694	1.510925
0.727993	1.510873
0.729048	1.510822
0.730104	1.510771
0.731162	1.51072
0.732221	1.510669
0.733282	1.510618
0.734344	1.510568
0.735408	1.510517
0.736473	1.510467
0.73754	1.510417
0.738608	1.510367
0.739678	1.510317
0.74075	1.510268
0.741823	1.510218
0.742898	1.510169
0.743974	1.51012
0.745052	1.510071
0.746131	1.510022
0.747212	1.509973
0.748295	1.509925
0.749379	1.509877
0.750464	1.509828
0.751551	1.50978
0.75264	1.509732
0.753731	1.509684
0.754822	1.509637
0.755916	1.509589
0.757011	1.509542
0.758108	1.509495
0.759206	1.509448
0.760306	1.509401
0.761407	1.509354
0.76251	1.509307
0.763615	1.509261
0.764721	1.509215
0.765829	1.509168
0.766939	1.509122
0.76805	1.509076
0.769162	1.509031
0.770277	1.508985
0.771392	1.508939
0.77251	1.508894
0.773629	1.508849
0.77475	1.508804
0.775872	1.508759
0.776996	1.508714
0.778122	1.508669
0.779249	1.508625
0.780378	1.508581
0.781508	1.508536
0.782641	1.508492
0.783774	1.508448
0.78491	1.508404
0.786047	1.508361
0.787186	1.508317
0.788326	1.508274
0.789468	1.50823
0.790612	1.508187
0.791757	1.508144
0.792904	1.508101
0.794053	1.508058
0.795203	1.508016
0.796355	1.507973
0.797509	1.507931
0.798664	1.507889
0.799821	1.507847
0.80098	1.507805
0.80214	1.507763
0.803302	1.507721
0.804466	1.507679
0.805632	1.507638
0.806799	1.507597
0.807968	1.507555
0.809138	1.507514
0.81031	1.507473
0.811484	1.507432
0.81266	1.507392
0.813837	1.507351
0.815016	1.507311
0.816197	1.50727
0.817379	1.50723
0.818563	1.50719
0.819749	1.50715
0.820937	1.50711
0.822126	1.50707
0.823317	1.507031
0.82451	1.506991
0.825704	1.506952
0.8269	1.506913
0.828098	1.506873
0.829298	1.506834
0.830499	1.506796
0.831702	1.506757
0.832907	1.506718
0.834114	1.50668
0.835322	1.506641
0.836532	1.506603
0.837744	1.506565
0.838958	1.506527
0.840173	1.506489
0.84139	1.506451
0.842609	1.506413
0.84383	1.506375
0.845053	1.506338
0.846277	1.506301
0.847503	1.506263
0.848731	1.506226
0.84996	1.506189
0.851191	1.506152
0.852425	1.506115
0.853659	1.506079
0.854896	1.506042
0.856135	1.506006
0.857375	1.505969
0.858617	1.505933
0.859861	1.505897
0.861106	1.505861
0.862354	1.505825
0.863603	1.505789
0.864854	1.505753
0.866107	1.505718
0.867362	1.505682
0.868619	1.505647
0.869877	1.505612
0.871137	1.505576
0.872399	1.505541
0.873663	1.505506
0.874929	1.505471
0.876196	1.505437
0.877465	1.505402
0.878737	1.505368
0.88001	1.505333
0.881284	1.505299
0.882561	1.505265
0.88384	1.50523
0.88512	1.505196
0.886402	1.505163
0.887687	1.505129
0.888973	1.505095
0.89026	1.505061
0.89155	1.505028
0.892842	1.504995
0.894135	1.504961
0.89543	1.504928
0.896728	1.504895
0.898027	1.504862
0.899328	1.504829
0.900631	1.504796
0.901935	1.504764
0.903242	1.504731
0.90455	1.504698
0.905861	1.504666
0.907173	1.504634
0.908487	1.504602
0.909804	1.504569
0.911122	1.504537
0.912441	1.504506
0.913763	1.504474
0.915087	1.504442
0.916413	1.50441
0.91774	1.504379
0.91907	1.504347
0.920401	1.504316
0.921735	1.504285
0.92307	1.504254
0.924407	1.504223
0.925746	1.504192
0.927088	1.504161
0.928431	1.50413
0.929776	1.504099
0.931123	1.504069
0.932472	1.504038
0.933822	1.504008
0.935175	1.503978
0.93653	1.503947
0.937887	1.503917
0.939245	1.503887
0.940606	1.503857
0.941969	1.503827
0.943333	1.503798
0.9447	1.503768
0.946069	1.503738
0.947439	1.503709
0.948812	1.503679
0.950186	1.50365
0.951563	1.503621
0.952941	1.503592
0.954322	1.503563
0.955704	1.503534
0.957089	1.503505
0.958475	1.503476
0.959864	1.503447
0.961254	1.503419
0.962647	1.50339
0.964042	1.503362
0.965438	1.503333
0.966837	1.503305
0.968237	1.503277
0.96964	1.503249
0.971045	1.503221
0.972452	1.503193
0.97386	1.503165
0.975271	1.503137
0.976684	1.50311
0.978099	1.503082
0.979516	1.503054
0.980935	1.503027
0.982356	1.503
0.983779	1.502972
0.985204	1.502945
0.986632	1.502918
0.988061	1.502891
0.989492	1.502864
0.990926	1.502837
0.992361	1.502811
0.993799	1.502784
0.995239	1.502757
0.99668	1.502731
0.998124	1.502704
0.99957	1.502678
1.00102	1.502652
1.00247	1.502625
1.00392	1.502599
1.00538	1.502573
1.00683	1.502547
1.00829	1.502521
1.00975	1.502495
1.01121	1.50247
1.01268	1.502444
1.01415	1.502418
1.01562	1.502393
1.01709	1.502367
1.01856	1.502342
1.02004	1.502317
1.02151	1.502291
1.02299	1.502266
1.02447	1.502241
1.02596	1.502216
1.02745	1.502191
1.02893	1.502167
1.03042	1.502142
1.03192	1.502117
1.03341	1.502092
1.03491	1.502068
1.03641	1.502043
1.03791	1.502019
1.03941	1.501995
1.04092	1.50197
1.04243	1.501946
1.04394	1.501922
1.04545	1.501898
1.04696	1.501874
1.04848	1.50185
1.05	1.501826

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: —

C₉H₁₀O₃ (Ethyl salicylate): all datasets

Rheims et al. 1997: n 0.589–1.05 µm n 0.5893–1.05 µm default

About C9H10O3 (Ethyl salicylate)

Ethyl salicylate (C₉H₁₀O₃) is a clear liquid that emits a faintly sweet, wintergreen-like aroma. It is frequently employed in the flavor and fragrance industry due to its pleasant, minty scent and taste. Apart from its applications in perfumes and as a flavoring agent in certain candies and pharmaceutical products, ethyl salicylate is also utilized in sunscreens and other cosmetic products. Furthermore, this compound has been studied for its potential anti-inflammatory and analgesic properties, making it of interest in medical research. Chemical formula: 2-(HO)C₆H₄CO₂C₂H₅

More about C9H10O3 (Ethyl salicylate) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/organic/C9H10O3 - ethyl salicylate/nk/Rheims.yml
ID: ds_c122e415e275
API: /v1/datasets/ds_c122e415e275

Plot