Optical constants

Refractive index of CaMoO₄ (Calcium molybdate)

Bond 1965: n(e) 0.45–3.8 µm

Data: formula 1
Range: 0.45–3.8 µm
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: 2.00219
Extinction coefficient k: 0

Permittivity ε₁: 4.00877
Permittivity ε₂: 0

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

Abbe number V_d: 26.568
Chromatic dispersion dn/dλ: -0.192025 µm⁻¹

Group index n_g: 2.11503
Group velocity dispersion: 373.278 fs²/mm

Dispersion parameter D: -2036.43 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

# CaMoO4 (Calcium molybdate): Bond 1965: n(e) 0.45–3.8 µm
camoo4 = ls.fetch_refractiveindex("main", "CaMoO4", "Bond-e", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(camoo4.range_nm)  # (450, 3800) nm
eps = camoo4.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_531d3ed2d9fe/lightsmith"
camoo4 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(camoo4.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (camoo4/bond-1965-e).

# ... load camoo4 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=camoo4)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=450, 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"]).

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_531d3ed2d9fe/lightsmith?model=drude_lorentz"
camoo4_dl = ls.DrudeLorentz.model_validate(json.load(urllib.request.urlopen(url)))

A dispersive Drude–Lorentz model for time-domain solvers.

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

Sellmeier (formula 1), λ in µm

n^{2} - 1 = \frac{2.8045 λ^{2}}{λ^{2} - {0.1542}^{2}} + \frac{1.0055 λ^{2}}{λ^{2} - {10.522}^{2}}

Valid from 0.45 to 3.8 µm.

Coefficients as stored

C_i	Value
C1	0.0
C2	2.8045
C3	0.1542
C4	1.0055
C5	10.522

Comments and conditions

Extraordinary ray (e). Room temperature.

Conditions

direction: e

References

1) W. L. Bond. Measurement of the refractive indices of several crystals. J. Appl. Phys. 36, 1674-1677 (1965)
2) Handbook of Optics, 3rd edition, Vol. 4. McGraw-Hill 2009 * Ref. 2 provides a dispersion formula based on data from ref. 1

doi:10.1063/1.1703106 Measurement of the Refractive Indices of Several Crystals, Journal of Applied Physics (1965)

Cite

W. L. Bond. Measurement of the Refractive Indices of Several Crystals. Journal of Applied Physics, 36, 1674-1677 (1965), doi:10.1063/1.1703106; 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

CaMoO4 (Calcium molybdate), Bond 1965: n(e) 0.45–3.8 µm: n and k versus wavelength
λ (µm)	n
0.45	2.043471
0.452413	2.042367
0.454838	2.041277
0.457277	2.040202
0.459729	2.039139
0.462193	2.038091
0.464671	2.037055
0.467163	2.036033
0.469667	2.035023
0.472185	2.034026
0.474717	2.033042
0.477262	2.03207
0.479821	2.03111
0.482394	2.030162
0.48498	2.029226
0.48758	2.028302
0.490194	2.027389
0.492822	2.026487
0.495465	2.025597
0.498121	2.024717
0.500792	2.023848
0.503477	2.02299
0.506176	2.022143
0.50889	2.021305
0.511618	2.020478
0.514361	2.019661
0.517119	2.018854
0.519892	2.018057
0.522679	2.017269
0.525481	2.016491
0.528299	2.015722
0.531131	2.014963
0.533979	2.014212
0.536842	2.013471
0.53972	2.012739
0.542614	2.012015
0.545523	2.0113
0.548448	2.010593
0.551388	2.009895
0.554344	2.009205
0.557316	2.008523
0.560304	2.007849
0.563309	2.007183
0.566329	2.006525
0.569365	2.005875
0.572418	2.005232
0.575487	2.004597
0.578572	2.003969
0.581674	2.003349
0.584793	2.002735
0.587928	2.002129
0.59108	2.00153
0.594249	2.000938
0.597435	2.000353
0.600638	1.999774
0.603859	1.999202
0.607096	1.998637
0.610351	1.998078
0.613624	1.997525
0.616914	1.996979
0.620221	1.996439
0.623546	1.995905
0.626889	1.995377
0.630251	1.994855
0.63363	1.99434
0.637027	1.993829
0.640442	1.993325
0.643876	1.992826
0.647328	1.992333
0.650799	1.991846
0.654288	1.991364
0.657796	1.990887
0.661323	1.990415
0.664868	1.989949
0.668433	1.989488
0.672017	1.989032
0.67562	1.988581
0.679242	1.988135
0.682884	1.987694
0.686545	1.987258
0.690226	1.986827
0.693926	1.9864
0.697647	1.985978
0.701387	1.98556
0.705148	1.985147
0.708928	1.984739
0.712729	1.984335
0.716551	1.983935
0.720392	1.98354
0.724255	1.983148
0.728138	1.982761
0.732042	1.982379
0.735966	1.982
0.739912	1.981625
0.743879	1.981254
0.747868	1.980888
0.751877	1.980525
0.755908	1.980165
0.759961	1.97981
0.764036	1.979458
0.768132	1.97911
0.77225	1.978766
0.776391	1.978425
0.780553	1.978088
0.784738	1.977754
0.788946	1.977424
0.793175	1.977097
0.797428	1.976773
0.801703	1.976453
0.806002	1.976136
0.810323	1.975822
0.814668	1.975512
0.819035	1.975204
0.823427	1.9749
0.827841	1.974598
0.83228	1.9743
0.836742	1.974005
0.841228	1.973712
0.845738	1.973423
0.850273	1.973136
0.854831	1.972852
0.859415	1.972571
0.864022	1.972293
0.868655	1.972017
0.873312	1.971744
0.877994	1.971474
0.882702	1.971206
0.887434	1.970941
0.892192	1.970678
0.896976	1.970418
0.901785	1.97016
0.90662	1.969905
0.91148	1.969652
0.916367	1.969401
0.92128	1.969153
0.92622	1.968907
0.931186	1.968663
0.936178	1.968422
0.941197	1.968183
0.946244	1.967946
0.951317	1.967711
0.956417	1.967478
0.961545	1.967247
0.9667	1.967018
0.971883	1.966792
0.977094	1.966567
0.982333	1.966344
0.987599	1.966123
0.992894	1.965904
0.998218	1.965687
1.00357	1.965472
1.00895	1.965259
1.01436	1.965047
1.0198	1.964837
1.02527	1.964629
1.03076	1.964423
1.03629	1.964218
1.04185	1.964015
1.04743	1.963814
1.05305	1.963614
1.05869	1.963416
1.06437	1.963219
1.07008	1.963024
1.07581	1.96283
1.08158	1.962638
1.08738	1.962448
1.09321	1.962258
1.09907	1.962071
1.10496	1.961884
1.11089	1.961699
1.11684	1.961515
1.12283	1.961333
1.12885	1.961152
1.1349	1.960972
1.14099	1.960794
1.14711	1.960616
1.15326	1.96044
1.15944	1.960265
1.16566	1.960091
1.1719	1.959919
1.17819	1.959747
1.1845	1.959577
1.19086	1.959407
1.19724	1.959239
1.20366	1.959072
1.21011	1.958906
1.2166	1.958741
1.22312	1.958576
1.22968	1.958413
1.23627	1.958251
1.2429	1.958089
1.24957	1.957929
1.25627	1.957769
1.263	1.95761
1.26977	1.957452
1.27658	1.957295
1.28342	1.957139
1.29031	1.956983
1.29722	1.956828
1.30418	1.956674
1.31117	1.956521
1.3182	1.956368
1.32527	1.956216
1.33237	1.956065
1.33952	1.955914
1.3467	1.955764
1.35392	1.955614
1.36118	1.955465
1.36848	1.955317
1.37581	1.955169
1.38319	1.955022
1.3906	1.954876
1.39806	1.954729
1.40556	1.954584
1.41309	1.954438
1.42067	1.954293
1.42829	1.954149
1.43594	1.954005
1.44364	1.953862
1.45138	1.953718
1.45916	1.953575
1.46699	1.953433
1.47485	1.953291
1.48276	1.953149
1.49071	1.953007
1.4987	1.952866
1.50674	1.952725
1.51481	1.952584
1.52294	1.952443
1.5311	1.952303
1.53931	1.952162
1.54756	1.952022
1.55586	1.951882
1.5642	1.951742
1.57259	1.951603
1.58102	1.951463
1.5895	1.951323
1.59802	1.951184
1.60659	1.951044
1.6152	1.950905
1.62386	1.950765
1.63257	1.950626
1.64132	1.950486
1.65012	1.950347
1.65897	1.950207
1.66786	1.950068
1.6768	1.949928
1.68579	1.949788
1.69483	1.949648
1.70392	1.949507
1.71305	1.949367
1.72224	1.949226
1.73147	1.949086
1.74075	1.948945
1.75009	1.948803
1.75947	1.948662
1.7689	1.94852
1.77839	1.948378
1.78792	1.948235
1.79751	1.948093
1.80715	1.94795
1.81683	1.947806
1.82658	1.947662
1.83637	1.947518
1.84621	1.947373
1.85611	1.947228
1.86606	1.947082
1.87607	1.946936
1.88613	1.946789
1.89624	1.946642
1.90641	1.946495
1.91663	1.946346
1.9269	1.946197
1.93723	1.946048
1.94762	1.945898
1.95806	1.945747
1.96856	1.945596
1.97912	1.945444
1.98973	1.945291
2.00039	1.945137
2.01112	1.944983
2.0219	1.944828
2.03274	1.944672
2.04364	1.944515
2.0546	1.944358
2.06561	1.9442
2.07669	1.94404
2.08782	1.94388
2.09902	1.943719
2.11027	1.943557
2.12158	1.943394
2.13296	1.94323
2.14439	1.943066
2.15589	1.9429
2.16745	1.942733
2.17907	1.942565
2.19075	1.942395
2.2025	1.942225
2.21431	1.942054
2.22618	1.941881
2.23812	1.941707
2.25012	1.941532
2.26218	1.941356
2.27431	1.941178
2.2865	1.940999
2.29876	1.940819
2.31108	1.940637
2.32348	1.940454
2.33593	1.94027
2.34846	1.940084
2.36105	1.939897
2.37371	1.939708
2.38643	1.939518
2.39923	1.939326
2.41209	1.939133
2.42502	1.938938
2.43803	1.938741
2.4511	1.938543
2.46424	1.938343
2.47745	1.938141
2.49073	1.937938
2.50409	1.937733
2.51751	1.937525
2.53101	1.937317
2.54458	1.937106
2.55822	1.936893
2.57194	1.936678
2.58573	1.936462
2.59959	1.936243
2.61353	1.936022
2.62754	1.935799
2.64163	1.935575
2.65579	1.935347
2.67003	1.935118
2.68435	1.934887
2.69874	1.934653
2.71321	1.934417
2.72775	1.934178
2.74238	1.933937
2.75708	1.933694
2.77186	1.933448
2.78672	1.9332
2.80167	1.932949
2.81669	1.932696
2.83179	1.93244
2.84697	1.932181
2.86223	1.93192
2.87758	1.931656
2.89301	1.931389
2.90852	1.931119
2.92411	1.930846
2.93979	1.93057
2.95555	1.930291
2.9714	1.930009
2.98733	1.929725
3.00335	1.929436
3.01945	1.929145
3.03564	1.928851
3.05191	1.928553
3.06827	1.928251
3.08473	1.927947
3.10126	1.927639
3.11789	1.927327
3.13461	1.927012
3.15141	1.926693
3.16831	1.92637
3.1853	1.926043
3.20237	1.925713
3.21954	1.925379
3.23681	1.925041
3.25416	1.924698
3.27161	1.924352
3.28915	1.924002
3.30678	1.923647
3.32451	1.923288
3.34234	1.922924
3.36025	1.922556
3.37827	1.922184
3.39638	1.921807
3.41459	1.921425
3.4329	1.921039
3.45131	1.920647
3.46981	1.920251
3.48841	1.91985
3.50712	1.919443
3.52592	1.919032
3.54482	1.918615
3.56383	1.918192
3.58294	1.917765
3.60215	1.917331
3.62146	1.916892
3.64087	1.916448
3.6604	1.915997
3.68002	1.915541
3.69975	1.915078
3.71959	1.91461
3.73953	1.914135
3.75958	1.913653
3.77974	1.913165
3.8	1.912671

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: —

CaMoO₄ (Calcium molybdate): all datasets

About CaMoO4 (Calcium molybdate)

Calcium molybdate (CaMoO₄) is an inorganic compound with a tetragonal crystal structure, widely used as a scintillator material for radiation detection applications. It exhibits a high density, good thermal stability, and strong resistance to radiation damage. When doped with rare-earth ions or other activators, CaMoO₄ can demonstrate enhanced scintillation efficiency, making it particularly useful for gamma-ray and X-ray detection. Its optical properties, including a moderate refractive index and wide bandgap, have also led to its exploration as a host material for solid-state laser applications. The compound can be synthesized through various methods such as solid-state reaction, hydrothermal processes, or co-precipitation. It's worth noting that its non-hygroscopic nature allows for easy handling and long-term stability. Overall, the favorable physical and optical properties of calcium molybdate make it a material of interest in both scientific research and practical applications, particularly in the fields of radiation detection and optoelectronics. Mineral: Powellite

More about CaMoO4 (Calcium molybdate) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/CaMoO4/nk/Bond-e.yml
ID: ds_531d3ed2d9fe
API: /v1/datasets/ds_531d3ed2d9fe

Plot