Optical constants

Refractive index of LiCaAlF₆ (Lithium calcium aluminum fluoride, LiCAF)

Woods et al. 1991: n(e) 0.4–1.0 µm

Data: formula 4
Range: 0.4–1 µm
Temperature: 299 K
Optical axis: e
Licence: CC0-1.0

Uniaxial crystal, axes: oe

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 1.39098
Extinction coefficient k: 0

Permittivity ε₁: 1.93483
Permittivity ε₂: 0

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

Abbe number V_d: 103.13
Chromatic dispersion dn/dλ: -0.0197234 µm⁻¹

Group index n_g: 1.40257
Group velocity dispersion: 33.0315 fs²/mm

Dispersion parameter D: -180.204 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

# LiCaAlF6 (Lithium calcium aluminum fluoride, LiCAF): Woods et al. 1991: n(e) 0.4–1.0 µm
licaalf6 = ls.fetch_refractiveindex("main", "LiCaAlF6", "Woods-e", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(licaalf6.range_nm)  # (400, 1000) nm
eps = licaalf6.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_9ae94829c811/lightsmith"
licaalf6 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(licaalf6.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (licaalf6/woods-1991-e).

# ... load licaalf6 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=licaalf6)],
    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.

Dispersion formula

RefractiveIndex.INFO (formula 4), λ in µm

n^{2} = 1.92155 + \frac{0.00494 λ^{0.0}}{λ^{2} - {0.00617}^{1.0}} - 0.00373 λ^{2.0}

Valid from 0.4 to 1.0 µm.

Coefficients as stored

C_i	Value
C1	1.92155
C2	0.00494
C3	0.0
C4	0.00617
C5	1.0
C6	0.0
C7	0.0
C8	0.0
C9	1.0
C10	-0.00373
C11	2.0

Comments and conditions

26 °C. Extraordinary ray (e).

Conditions

temperature: 299 K
direction: e

References

B. W. Woods, S. A. Payne, J. E. Marion, R. S. Hughes, L. E. Davis. Thermomechanical and thermo-optical properties of the LiCaAlF₆:Cr³⁺ laser material. J. Opt. Soc. Am. B 8, 970-977 (1991).

doi:10.1364/josab.8.000970 Thermomechanical and thermo-optical properties of the LiCaAlF_6:Cr^3+ laser material, Journal of the Optical Society of America B (1991)

Cite

Bruce W. Woods, Stephen A. Payne, John E. Marion, Robert S. Hughes and Laura E. Davis. Thermomechanical and thermo-optical properties of the LiCaAlF_6:Cr^3+ laser material. Journal of the Optical Society of America B, 8, 970 (1991), doi:10.1364/josab.8.000970; 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

LiCaAlF6 (Lithium calcium aluminum fluoride, LiCAF), Woods et al. 1991: n(e) 0.4–1.0 µm: n and k versus wavelength
λ (µm)	n
0.4	1.397522
0.40092	1.397466
0.401841	1.39741
0.402765	1.397355
0.403691	1.3973
0.404619	1.397246
0.40555	1.397191
0.406482	1.397137
0.407417	1.397083
0.408353	1.397029
0.409292	1.396976
0.410233	1.396923
0.411176	1.39687
0.412122	1.396817
0.413069	1.396765
0.414019	1.396713
0.414971	1.396661
0.415925	1.396609
0.416881	1.396558
0.41784	1.396506
0.4188	1.396455
0.419763	1.396405
0.420728	1.396354
0.421695	1.396304
0.422665	1.396254
0.423637	1.396204
0.424611	1.396155
0.425587	1.396105
0.426565	1.396056
0.427546	1.396007
0.428529	1.395959
0.429514	1.39591
0.430502	1.395862
0.431492	1.395814
0.432484	1.395767
0.433478	1.395719
0.434475	1.395672
0.435473	1.395625
0.436475	1.395578
0.437478	1.395531
0.438484	1.395485
0.439492	1.395439
0.440503	1.395393
0.441515	1.395347
0.44253	1.395301
0.443548	1.395256
0.444568	1.395211
0.44559	1.395166
0.446614	1.395121
0.447641	1.395077
0.44867	1.395032
0.449702	1.394988
0.450736	1.394944
0.451772	1.3949
0.452811	1.394857
0.453852	1.394814
0.454895	1.39477
0.455941	1.394728
0.456989	1.394685
0.45804	1.394642
0.459093	1.3946
0.460148	1.394558
0.461206	1.394516
0.462267	1.394474
0.46333	1.394432
0.464395	1.394391
0.465462	1.39435
0.466533	1.394309
0.467605	1.394268
0.46868	1.394227
0.469758	1.394187
0.470838	1.394147
0.47192	1.394106
0.473005	1.394067
0.474093	1.394027
0.475183	1.393987
0.476275	1.393948
0.47737	1.393909
0.478468	1.39387
0.479568	1.393831
0.48067	1.393792
0.481776	1.393753
0.482883	1.393715
0.483993	1.393677
0.485106	1.393639
0.486222	1.393601
0.487339	1.393563
0.48846	1.393526
0.489583	1.393489
0.490708	1.393451
0.491837	1.393414
0.492967	1.393378
0.494101	1.393341
0.495237	1.393304
0.496375	1.393268
0.497517	1.393232
0.49866	1.393196
0.499807	1.39316
0.500956	1.393124
0.502108	1.393089
0.503262	1.393053
0.504419	1.393018
0.505579	1.392983
0.506741	1.392948
0.507906	1.392913
0.509074	1.392878
0.510245	1.392844
0.511418	1.392809
0.512593	1.392775
0.513772	1.392741
0.514953	1.392707
0.516137	1.392674
0.517324	1.39264
0.518513	1.392607
0.519705	1.392573
0.5209	1.39254
0.522098	1.392507
0.523298	1.392474
0.524501	1.392441
0.525707	1.392409
0.526916	1.392376
0.528127	1.392344
0.529341	1.392312
0.530558	1.39228
0.531778	1.392248
0.533001	1.392216
0.534226	1.392184
0.535455	1.392153
0.536686	1.392121
0.537919	1.39209
0.539156	1.392059
0.540396	1.392028
0.541638	1.391997
0.542884	1.391966
0.544132	1.391936
0.545383	1.391905
0.546637	1.391875
0.547893	1.391845
0.549153	1.391815
0.550416	1.391785
0.551681	1.391755
0.552949	1.391725
0.554221	1.391696
0.555495	1.391666
0.556772	1.391637
0.558052	1.391608
0.559335	1.391579
0.560621	1.39155
0.56191	1.391521
0.563202	1.391492
0.564497	1.391463
0.565795	1.391435
0.567095	1.391406
0.568399	1.391378
0.569706	1.39135
0.571016	1.391322
0.572329	1.391294
0.573645	1.391266
0.574963	1.391238
0.576285	1.391211
0.57761	1.391183
0.578938	1.391156
0.580269	1.391129
0.581603	1.391102
0.582941	1.391075
0.584281	1.391048
0.585624	1.391021
0.586971	1.390994
0.58832	1.390967
0.589673	1.390941
0.591028	1.390915
0.592387	1.390888
0.593749	1.390862
0.595114	1.390836
0.596483	1.39081
0.597854	1.390784
0.599228	1.390758
0.600606	1.390733
0.601987	1.390707
0.603371	1.390682
0.604758	1.390656
0.606149	1.390631
0.607542	1.390606
0.608939	1.390581
0.610339	1.390556
0.611742	1.390531
0.613149	1.390506
0.614558	1.390481
0.615971	1.390457
0.617388	1.390432
0.618807	1.390408
0.62023	1.390383
0.621656	1.390359
0.623085	1.390335
0.624517	1.390311
0.625953	1.390287
0.627392	1.390263
0.628835	1.390239
0.630281	1.390216
0.63173	1.390192
0.633182	1.390169
0.634638	1.390145
0.636097	1.390122
0.637559	1.390099
0.639025	1.390075
0.640494	1.390052
0.641967	1.390029
0.643443	1.390006
0.644922	1.389984
0.646405	1.389961
0.647891	1.389938
0.649381	1.389916
0.650874	1.389893
0.65237	1.389871
0.65387	1.389848
0.655373	1.389826
0.65688	1.389804
0.65839	1.389782
0.659904	1.38976
0.661421	1.389738
0.662942	1.389716
0.664466	1.389694
0.665994	1.389673
0.667525	1.389651
0.66906	1.38963
0.670598	1.389608
0.67214	1.389587
0.673685	1.389565
0.675234	1.389544
0.676786	1.389523
0.678342	1.389502
0.679902	1.389481
0.681465	1.38946
0.683032	1.389439
0.684602	1.389418
0.686176	1.389397
0.687754	1.389377
0.689335	1.389356
0.69092	1.389336
0.692508	1.389315
0.694101	1.389295
0.695696	1.389274
0.697296	1.389254
0.698899	1.389234
0.700506	1.389214
0.702116	1.389194
0.703731	1.389174
0.705349	1.389154
0.70697	1.389134
0.708596	1.389114
0.710225	1.389094
0.711858	1.389075
0.713494	1.389055
0.715135	1.389036
0.716779	1.389016
0.718427	1.388997
0.720079	1.388977
0.721734	1.388958
0.723393	1.388939
0.725057	1.38892
0.726724	1.3889
0.728394	1.388881
0.730069	1.388862
0.731748	1.388843
0.73343	1.388825
0.735116	1.388806
0.736806	1.388787
0.7385	1.388768
0.740198	1.38875
0.7419	1.388731
0.743606	1.388712
0.745315	1.388694
0.747029	1.388676
0.748746	1.388657
0.750468	1.388639
0.752193	1.388621
0.753923	1.388602
0.755656	1.388584
0.757393	1.388566
0.759135	1.388548
0.76088	1.38853
0.762629	1.388512
0.764383	1.388494
0.76614	1.388476
0.767901	1.388458
0.769667	1.388441
0.771437	1.388423
0.77321	1.388405
0.774988	1.388388
0.77677	1.38837
0.778555	1.388353
0.780345	1.388335
0.78214	1.388318
0.783938	1.3883
0.78574	1.388283
0.787547	1.388266
0.789357	1.388248
0.791172	1.388231
0.792991	1.388214
0.794814	1.388197
0.796642	1.38818
0.798473	1.388163
0.800309	1.388146
0.802149	1.388129
0.803993	1.388112
0.805842	1.388095
0.807694	1.388078
0.809551	1.388062
0.811413	1.388045
0.813278	1.388028
0.815148	1.388011
0.817022	1.387995
0.8189	1.387978
0.820783	1.387962
0.82267	1.387945
0.824562	1.387929
0.826457	1.387912
0.828358	1.387896
0.830262	1.38788
0.832171	1.387863
0.834084	1.387847
0.836002	1.387831
0.837924	1.387815
0.83985	1.387798
0.841781	1.387782
0.843717	1.387766
0.845656	1.38775
0.847601	1.387734
0.849549	1.387718
0.851503	1.387702
0.85346	1.387686
0.855422	1.38767
0.857389	1.387654
0.85936	1.387639
0.861336	1.387623
0.863316	1.387607
0.865301	1.387591
0.867291	1.387576
0.869285	1.38756
0.871283	1.387544
0.873286	1.387529
0.875294	1.387513
0.877307	1.387498
0.879324	1.387482
0.881345	1.387466
0.883372	1.387451
0.885403	1.387436
0.887438	1.38742
0.889479	1.387405
0.891524	1.387389
0.893573	1.387374
0.895628	1.387359
0.897687	1.387343
0.899751	1.387328
0.901819	1.387313
0.903893	1.387298
0.905971	1.387282
0.908054	1.387267
0.910142	1.387252
0.912234	1.387237
0.914331	1.387222
0.916433	1.387207
0.91854	1.387192
0.920652	1.387177
0.922769	1.387162
0.924891	1.387147
0.927017	1.387132
0.929148	1.387117
0.931284	1.387102
0.933426	1.387087
0.935572	1.387072
0.937723	1.387057
0.939879	1.387042
0.942039	1.387028
0.944205	1.387013
0.946376	1.386998
0.948552	1.386983
0.950733	1.386968
0.952919	1.386954
0.955109	1.386939
0.957305	1.386924
0.959506	1.386909
0.961712	1.386895
0.963923	1.38688
0.96614	1.386865
0.968361	1.386851
0.970587	1.386836
0.972819	1.386822
0.975055	1.386807
0.977297	1.386792
0.979544	1.386778
0.981796	1.386763
0.984053	1.386749
0.986316	1.386734
0.988583	1.38672
0.990856	1.386705
0.993134	1.386691
0.995418	1.386676
0.997706	1.386662
1	1.386647

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: —

LiCaAlF₆ (Lithium calcium aluminum fluoride, LiCAF): all datasets

About LiCaAlF6 (Lithium calcium aluminum fluoride, LiCAF)

Lithium calcium aluminum fluoride (LiCaAlF₆, or LiCAF) is a crystalline material with applications in solid-state lasers, especially those emitting in the ultraviolet spectrum. This material is valued for its high damage threshold and its ability to be doped with various rare-earth ions for different lasing properties. LiCAF is also known for its wide transparency range in the ultraviolet to the infrared regions, making it versatile for various optical applications. Overall, its unique combination of properties makes it a material of interest for advanced laser systems and other specialized optical uses.

LiSAF, LiSGaF, LiCAF - Unioriental

More about LiCaAlF6 (Lithium calcium aluminum fluoride, LiCAF) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/LiCaAlF6/nk/Woods-e.yml
ID: ds_9ae94829c811
API: /v1/datasets/ds_9ae94829c811

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