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Optical constants

Refractive index of SSL5 (OHARA)

SSL5: n,k 0.3–2.4 µm

Data
formula 3 + tabulated k
Range
0.3–2.4 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength. Note: k data cover 300-900 nm only; k = 0 elsewhere in the n range 300-2400 nm.

At one wavelength

Range 0.3–2.4 µm
Refractive index n
1.5213
Extinction coefficient k
9.36134e-09
Permittivity ε1
2.31434
Permittivity ε2
2.84828e-08
Absorption coefficient α
0.00200201 cm⁻¹
Penetration depth δ = λ/(2πk)
9.98996e+09 nm
Abbe number Vd
52.553
Chromatic dispersion dn/dλ
-0.0511047 µm⁻¹
Group index ng
1.55133
Group velocity dispersion
90.5279 fs²/mm
Dispersion parameter D
-493.878 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

# SSL5 (OHARA): SSL5
ohara_ssl5 = ls.fetch_refractiveindex("specs", "OHARA-optical", "SSL5", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_ssl5.range_nm)  # (300, 2400) nm
eps = ohara_ssl5.eps([633])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

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

Polynomial (formula 3), λ in µm
n2=2.279329−0.010732907⁢λ2.0+0.012001392⁢λ−2.0+0.00058141137⁢λ−4.0−4.6205948×10-5⁢λ−6.0+2.9557679×10-6⁢λ−8.0

Valid from 0.3 to 2.4 µm.

Coefficients as stored
CiValue
C12.279329
C2-0.010732907
C32.0
C40.012001392
C5-2.0
C60.00058141137
C7-4.0
C8-4.6205948e-05
C9-6.0
C102.9557679e-06
C11-8.0

Comments and conditions

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 7.208e-06 0.0 0.0 0.0 0.0 0.0
nd
1.521299
Vd
52.553447
glass code
521526
glass status
preferred
density
value: 2510
thermal expansion
value: 5.3e-06, temperature range: 243 343; value: 5.9e-06, temperature range: 293 573
dPgF
-0.0072
resistance
acid: 2.1; phosphate: 2.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 3.10e-06 K⁻¹ at 633 nm, dn/dT = 3.03e-06 K⁻¹ at 1310 nm, dn/dT = 3.02e-06 K⁻¹ at 1550 nm
Notes on the source data (kept exactly as published):
  • k data cover 300-900 nm only; k = 0 elsewhere in the n range 300-2400 nm

References

OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets

Cite

OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp); See also OHARA glass data sheets; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

Computed on 420 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
SSL5 (OHARA), SSL5: n and k versus wavelength
λ (µm)nk
0.31.5700828.371300e-06
0.3015681.5692037.792662e-06
0.3031431.5683417.211001e-06
0.3047271.5674986.626301e-06
0.306321.5666726.038545e-06
0.307921.5658635.447719e-06
0.3095291.565074.853805e-06
0.311.5648424.680000e-06
0.3111471.5642934.458402e-06
0.3127721.5635324.144165e-06
0.3144071.5627853.828285e-06
0.3160491.5620523.510755e-06
0.3177011.5613343.191566e-06
0.3193611.5606292.870709e-06
0.321.5603622.747200e-06
0.321031.5599372.635990e-06
0.3227071.5592572.454825e-06
0.3243931.558592.272713e-06
0.3260881.5579352.089650e-06
0.3277921.5572921.905630e-06
0.3295051.556661.720648e-06
0.331.556481.667200e-06
0.3312271.5560391.590681e-06
0.3329581.5554291.482735e-06
0.3346971.5548291.374225e-06
0.3364461.5542391.265147e-06
0.3382041.5536591.155500e-06
0.3399711.5530881.045280e-06
0.341.5530791.043500e-06
0.3417481.5525279.697391e-07
0.3435341.5519758.943820e-07
0.3453291.5514328.186311e-07
0.3471331.5508977.424844e-07
0.3489471.5503716.659398e-07
0.351.5500716.215000e-07
0.350771.5498536.043588e-07
0.3526031.5493435.635703e-07
0.3544461.5488415.225688e-07
0.3562981.5483474.813530e-07
0.3581591.5478594.399219e-07
0.361.5473873.989600e-07
0.3600311.547383.984773e-07
0.3619121.5469073.690075e-07
0.3638031.5464413.393838e-07
0.3657041.5459823.096053e-07
0.3676151.5455292.796712e-07
0.3695361.5450832.495807e-07
0.371.5449772.423100e-07
0.3714671.5446442.318607e-07
0.3734081.544212.180330e-07
0.3753591.5437832.041330e-07
0.377321.5433611.901605e-07
0.3792921.5429461.761149e-07
0.381.5427981.710700e-07
0.3812741.5425361.633639e-07
0.3832661.5421321.513108e-07
0.3852691.5417331.391947e-07
0.3872821.5413391.270154e-07
0.3893051.5409511.147723e-07
0.391.5408191.105700e-07
0.391341.5405681.052437e-07
0.3933841.540199.711341e-08
0.395441.5398178.894064e-08
0.3975061.5394498.072516e-08
0.3995831.5390857.246675e-08
0.41.5390137.081000e-08
0.4016711.5387266.769992e-08
0.403771.5383726.379411e-08
0.405881.5380235.986789e-08
0.4080011.5376785.592115e-08
0.4101331.5373375.195379e-08
0.4122761.5374.796570e-08
0.414431.5366684.395677e-08
0.4165951.536343.992690e-08
0.4187721.5360163.587596e-08
0.421.5358353.359100e-08
0.420961.5356963.349804e-08
0.423161.5353793.328512e-08
0.4253711.5350673.307108e-08
0.4275941.5347593.285593e-08
0.4298281.5344543.263965e-08
0.4320741.5341533.242224e-08
0.4343321.5338553.220370e-08
0.4366011.5335623.198401e-08
0.4388821.5332713.176318e-08
0.441.5331313.165500e-08
0.4411761.5329843.108917e-08
0.4434811.5327012.997977e-08
0.4457981.5324212.886457e-08
0.4481281.5321442.774355e-08
0.4504691.531872.661667e-08
0.4528231.53162.548390e-08
0.4551891.5313332.434521e-08
0.4575681.5310692.320057e-08
0.4599591.5308082.204995e-08
0.461.5308032.203000e-08
0.4623621.5305492.123639e-08
0.4647781.5302942.042463e-08
0.4672061.5300421.960863e-08
0.4696481.5297931.878836e-08
0.4721021.5295461.796381e-08
0.4745691.5293031.713495e-08
0.4770481.5290621.630176e-08
0.4795411.5288241.546422e-08
0.481.528781.531000e-08
0.4820471.5285881.496666e-08
0.4845661.5283551.454413e-08
0.4870981.5281251.411939e-08
0.4896431.5278971.369243e-08
0.4922011.5276721.326325e-08
0.4947731.527451.283182e-08
0.4973581.5272291.239813e-08
0.4999571.5270121.196218e-08
0.51.5270081.195500e-08
0.502571.5267961.179092e-08
0.5051961.5265831.162324e-08
0.5078351.5263721.145468e-08
0.5104891.5261641.128524e-08
0.5131561.5259581.111491e-08
0.5158381.5257541.094370e-08
0.5185331.5255521.077159e-08
0.5212431.5253531.059858e-08
0.5239661.5251551.042466e-08
0.5267041.524961.024984e-08
0.5294561.5247661.007410e-08
0.5322231.5245759.897449e-09
0.5350041.5243869.719871e-09
0.5377991.5241999.541366e-09
0.5406091.5240149.361928e-09
0.5434341.523839.181553e-09
0.5462741.5236499.000235e-09
0.5491281.5234698.817969e-09
0.551.5234158.762300e-09
0.5519981.5232928.794124e-09
0.5548821.5231168.840077e-09
0.5577811.5229428.886270e-09
0.5606961.522778.932705e-09
0.5636261.5225998.979382e-09
0.5665711.5224319.026303e-09
0.5695311.5222649.073469e-09
0.5725071.5220989.120881e-09
0.5754981.5219359.168542e-09
0.5785061.5217729.216451e-09
0.5815281.5216129.264611e-09
0.5845671.5214539.313022e-09
0.5876221.5212969.361687e-09
0.5906921.521149.410605e-09
0.5937791.5209869.459779e-09
0.5968811.5208339.509211e-09
0.61.5206829.558900e-09
0.6031351.5205329.933995e-09
0.6062871.5203841.031105e-08
0.6094551.5202371.069007e-08
0.6126391.5200921.107108e-08
0.615841.5199481.145408e-08
0.6190581.5198051.183907e-08
0.6222931.5196631.222608e-08
0.6255451.5195231.261511e-08
0.6288131.5193851.300618e-08
0.6320991.5192471.339929e-08
0.6354021.5191111.379445e-08
0.6387221.5189761.419167e-08
0.6420591.5188421.459098e-08
0.6454141.5187091.499236e-08
0.6487871.5185781.539585e-08
0.651.5185311.554100e-08
0.6521771.5184481.534992e-08
0.6555851.5183191.505078e-08
0.659011.5181911.475008e-08
0.6624541.5180641.444781e-08
0.6659151.5179381.414396e-08
0.6693951.5178141.383853e-08
0.6728921.517691.353150e-08
0.6764091.5175681.322286e-08
0.6799431.5174461.291261e-08
0.6834961.5173261.260074e-08
0.6870671.5172061.228724e-08
0.6906571.5170881.197210e-08
0.6942661.516971.165532e-08
0.6978941.5168541.133688e-08
0.71.5167871.115200e-08
0.7015411.5167381.107832e-08
0.7052061.5166241.090301e-08
0.7088911.516511.072677e-08
0.7125951.5163971.054962e-08
0.7163191.5162851.037154e-08
0.7200621.5161741.019253e-08
0.7238241.5160641.001259e-08
0.7276061.5159549.831702e-09
0.7314081.5158459.649872e-09
0.735231.5157389.467091e-09
0.7390721.5156319.283356e-09
0.7429341.5155249.098660e-09
0.7468161.5154198.912999e-09
0.7507181.5153148.726368e-09
0.7546411.515218.538762e-09
0.7585841.5151078.350176e-09
0.7625471.5150048.160604e-09
0.7665321.5149027.970042e-09
0.7705371.5148017.778484e-09
0.7745641.5147017.585925e-09
0.7786111.5146017.392360e-09
0.7826791.5145027.197783e-09
0.7867691.5144037.002190e-09
0.790881.5143056.805575e-09
0.7950121.5142086.607932e-09
0.7991671.5141116.409257e-09
0.81.5140916.369400e-09
0.8033421.5140156.396013e-09
0.807541.5139196.429434e-09
0.811761.5138246.463031e-09
0.8160011.5137296.496803e-09
0.8202651.5136356.530751e-09
0.8245511.5135426.564877e-09
0.828861.5134496.599181e-09
0.8331911.5133566.633664e-09
0.8375441.5132646.668328e-09
0.8419211.5131736.703172e-09
0.846321.5130826.738199e-09
0.8507421.5129916.773409e-09
0.8551871.5129016.808803e-09
0.8596561.5128116.844381e-09
0.8641481.5127226.880146e-09
0.8686631.5126336.916097e-09
0.8732021.5125446.952236e-09
0.8777651.5124566.988565e-09
0.8823511.5123687.025083e-09
0.8869621.5122817.061791e-09
0.8915971.5121947.098692e-09
0.8962551.5121077.135785e-09
0.91.5120387.165600e-09
0.9009391.512020
0.9056461.5119340
0.9103781.5118480
0.9151351.5117630
0.9199171.5116780
0.9247241.5115930
0.9295561.5115080
0.9344131.5114240
0.9392951.5113390
0.9442041.5112550
0.9491371.5111720
0.9540971.5110880
0.9590821.5110050
0.9640931.5109220
0.9691311.5108390
0.9741951.5107560
0.9792851.5106730
0.9844021.5105910
0.9895461.5105090
0.9947171.5104260
0.9999141.5103440
1.005141.5102620
1.010391.510180
1.015671.5100990
1.020981.5100170
1.026311.5099350
1.031681.5098540
1.037071.5097720
1.042491.5096910
1.047931.5096090
1.053411.5095280
1.058911.5094470
1.064451.5093650
1.070011.5092840
1.07561.5092020
1.081221.5091210
1.086871.5090390
1.092551.5089580
1.098261.5088760
1.1041.5087950
1.109761.5087130
1.115561.5086310
1.121391.5085490
1.127251.5084670
1.133141.5083850
1.139061.5083030
1.145011.5082210
1.1511.5081380
1.157011.5080560
1.163061.5079730
1.169131.507890
1.175241.5078070
1.181381.5077240
1.187561.507640
1.193761.5075560
1.21.5074730
1.206271.5073880
1.212571.5073040
1.218911.5072190
1.225281.5071350
1.231681.5070490
1.238121.5069640
1.244591.5068780
1.251091.5067920
1.257631.5067060
1.26421.5066190
1.27081.5065320
1.277441.5064450
1.284121.5063580
1.290831.506270
1.297571.5061810
1.304351.5060920
1.311171.5060030
1.318021.5059140
1.324911.5058240
1.331831.5057340
1.338791.5056430
1.345781.5055520
1.352821.505460
1.359891.5053680
1.366991.5052760
1.374131.5051830
1.381311.5050890
1.388531.5049950
1.395791.5049010
1.403081.5048060
1.410411.504710
1.417781.5046140
1.425191.5045170
1.432641.504420
1.440121.5043230
1.447651.5042240
1.455211.5041250
1.462821.5040260
1.470461.5039260
1.478141.5038250
1.485871.5037230
1.493631.5036210
1.501441.5035190
1.509281.5034150
1.517171.5033110
1.525091.5032060
1.533061.5031010
1.541071.5029940
1.549131.5028880
1.557221.502780
1.565361.5026710
1.573541.5025620
1.581761.5024520
1.590021.5023410
1.598331.502230
1.606681.5021170
1.615081.5020040
1.623521.501890
1.6321.5017750
1.640531.5016590
1.64911.5015420
1.657721.5014250
1.666381.5013060
1.675091.5011870
1.683841.5010670
1.692641.5009450
1.701481.5008230
1.710371.50070
1.719311.5005760
1.72831.500450
1.737331.5003240
1.74641.5001970
1.755531.5000680
1.76471.4999390
1.773921.4998090
1.783191.4996770
1.792511.4995440
1.801881.4994110
1.811291.4992760
1.820761.499140
1.830271.4990020
1.839831.4988640
1.849451.4987240
1.859111.4985840
1.868831.4984420
1.878591.4982980
1.888411.4981540
1.898271.4980080
1.908191.4978610
1.918161.4977120
1.928191.4975630
1.938261.4974120
1.948391.4972590
1.958571.4971060
1.96881.496950
1.979091.4967940
1.989431.4966360
1.999831.4964760
2.010281.4963150
2.020781.4961530
2.031341.4959890
2.041961.4958240
2.052631.4956570
2.063351.4954880
2.074131.4953180
2.084971.4951460
2.095861.4949730
2.106821.4947980
2.117821.4946220
2.128891.4944440
2.140011.4942640
2.15121.4940820
2.162441.4938990
2.173741.4937140
2.18511.4935270
2.196511.4933380
2.207991.4931480
2.219531.4929550
2.231121.4927610
2.242781.4925650
2.25451.4923670
2.266281.4921670
2.278121.4919650
2.290031.4917620
2.301991.4915560
2.314021.4913480
2.326111.4911380
2.338271.4909260
2.350491.4907120
2.362771.4904960
2.375111.4902780
2.387521.4900580
2.41.4898350

Optical transmission calculator

Free-standing sample in vacuum, normal incidence
Method
Transmittance T
—
Reflectance R
—

Fresnel reflection calculator

Direction
Rp
—
Rs
—
R = (Rp+Rs)/2
—
Phase φp
—
Phase φs
—
Brewster angle θB
—
Critical angle θC
—