Optical constants

Refractive index of S-NSL36 (OHARA)

S-NSL36: n,k 0.34–2.4 µm

Data
formula 2 + tabulated k
Range
0.34–2.4 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.34–2.4 µm
Refractive index n
1.51741
Extinction coefficient k
4.67830e-09
Permittivity ε1
2.30255
Permittivity ε2
1.41978e-08
Absorption coefficient α
0.0010005 cm⁻¹
Penetration depth δ = λ/(2πk)
1.99901e+10 nm
Abbe number Vd
52.431
Chromatic dispersion dn/dλ
-0.0506791 µm⁻¹
Group index ng
1.54719
Group velocity dispersion
91.3948 fs²/mm
Dispersion parameter D
-498.607 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

# S-NSL36 (OHARA): S-NSL36
ohara_s_nsl36 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-NSL36", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_nsl36.range_nm)  # (340, 2400) nm
eps = ohara_s_nsl36.eps([633])  # complex permittivity

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

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 (C in µm²) (formula 2), λ in µm
n2−1=1.09666153λ2λ2−0.00667491123+0.168990073λ2λ2−0.033609545+1.20580827λ2λ2−141.668738

Valid from 0.34 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.09666153
C30.00667491123
C40.168990073
C50.033609545
C61.20580827
C7141.668738

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 6.73e-07 1.17e-08 -4.11e-11 5.17e-07 5.13e-10 0.241
nd
1.517417
Vd
52.430903
glass code
517524
density
value: 2460
thermal expansion
value: 8e-06, temperature range: 243 343; value: 9.3e-06, temperature range: 293 573
dPgF
-0.0002
resistance
acid: 1.0; climatic: 1.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 9.33e-07 K⁻¹ at 633 nm, dn/dT = 4.12e-07 K⁻¹ at 1310 nm, dn/dT = 3.72e-07 K⁻¹ at 1550 nm

References

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 424 wavelengths, the same grid as the API and the library
S-NSL36 (OHARA), S-NSL36: n and k versus wavelength
λ (µm)nk
0.341.5495624.639600e-06
0.3416691.5490294.126431e-06
0.3433471.5485033.610743e-06
0.3450331.5479853.092522e-06
0.3467271.5474742.571757e-06
0.3484291.546972.048435e-06
0.351.5465131.565600e-06
0.350141.5464731.552127e-06
0.3518591.5459831.386754e-06
0.3535871.54551.220570e-06
0.3553231.5450231.053570e-06
0.3570681.5445548.857496e-07
0.3588211.544097.171054e-07
0.361.5437836.036700e-07
0.3605831.5436335.833653e-07
0.3623531.5431825.216565e-07
0.3641321.5427374.596447e-07
0.365921.5422983.973284e-07
0.3677171.5418653.347061e-07
0.3695221.5414372.717764e-07
0.371.5413252.551200e-07
0.3713361.5410152.375215e-07
0.373161.5405992.135130e-07
0.3749921.5401881.893866e-07
0.3768331.5397831.651418e-07
0.3786831.5393831.407779e-07
0.381.5391031.234400e-07
0.3805431.5389881.201440e-07
0.3824111.5385981.087950e-07
0.3842891.5382139.739033e-08
0.3861761.5378338.592966e-08
0.3880721.5374587.441272e-08
0.3899771.5370886.283923e-08
0.391.5370836.270000e-08
0.3918921.5367225.749893e-08
0.3938161.5363615.220900e-08
0.395751.5360044.689310e-08
0.3976931.5356524.155109e-08
0.3996451.5353053.618285e-08
0.41.5352423.520800e-08
0.4016081.5349613.372454e-08
0.403581.5346223.190500e-08
0.4055611.5342873.007651e-08
0.4075521.5339562.823905e-08
0.4095531.5336292.639257e-08
0.4115641.5333062.453703e-08
0.4135851.5329872.267237e-08
0.4156161.5326722.079855e-08
0.4176561.5323611.891554e-08
0.4197071.5320531.702328e-08
0.421.532011.675300e-08
0.4217681.5317491.651266e-08
0.4238391.5314491.623113e-08
0.425921.5311521.594821e-08
0.4280111.5308591.566391e-08
0.4301121.5305691.537821e-08
0.4322241.5302831.509110e-08
0.4343471.531.480259e-08
0.4364791.529721.451266e-08
0.4386221.5294441.422131e-08
0.441.5292691.403400e-08
0.4407761.5291711.391623e-08
0.442941.5289011.358770e-08
0.4451151.5286341.325756e-08
0.44731.528371.292581e-08
0.4494971.5281091.259242e-08
0.4517041.5278511.225740e-08
0.4539211.5275961.192073e-08
0.456151.5273441.158240e-08
0.458391.5270951.124242e-08
0.461.5269181.099800e-08
0.4606411.5268481.089068e-08
0.4629021.5266051.051174e-08
0.4651751.5263641.013094e-08
0.4674591.5261269.748272e-09
0.4697541.525899.363722e-09
0.4720611.5256578.977284e-09
0.4743791.5254278.588949e-09
0.4767081.5251998.198707e-09
0.4790481.5249747.806549e-09
0.481.5248837.647100e-09
0.48141.5247517.669409e-09
0.4837641.524537.707062e-09
0.4861391.5243127.744900e-09
0.4885261.5240977.782923e-09
0.4909251.5238837.821134e-09
0.4933351.5236727.859532e-09
0.4957581.5234647.898118e-09
0.4981921.5232577.936894e-09
0.51.5231067.965700e-09
0.5006381.5230537.919946e-09
0.5030961.5228517.743616e-09
0.5055661.5226517.566420e-09
0.5080481.5224537.388354e-09
0.5105431.5222577.209414e-09
0.513051.5220637.029595e-09
0.5155691.5218726.848894e-09
0.51811.5216826.667305e-09
0.5206441.5214946.484825e-09
0.52321.5213086.301448e-09
0.5257691.5211256.117171e-09
0.5283511.5209435.931990e-09
0.5309451.5207635.745899e-09
0.5335521.5205845.558895e-09
0.5361721.5204085.370972e-09
0.5388041.5202335.182127e-09
0.541451.5200614.992354e-09
0.5441081.5198894.801650e-09
0.546781.519724.610009e-09
0.5494641.5195524.417427e-09
0.551.5195194.379000e-09
0.5521621.5193864.396211e-09
0.5548731.5192224.417791e-09
0.5575981.5190594.439477e-09
0.5603351.5188984.461270e-09
0.5630871.5187394.483170e-09
0.5658511.5185814.505177e-09
0.568631.5184244.527292e-09
0.5714221.518274.549516e-09
0.5742271.5181164.571849e-09
0.5770471.5179644.594292e-09
0.579881.5178144.616845e-09
0.5827271.5176654.639508e-09
0.5855881.5175174.662283e-09
0.5884641.5173714.685170e-09
0.5913531.5172274.708169e-09
0.5942561.5170834.731281e-09
0.5971741.5169414.754506e-09
0.61.5168064.777000e-09
0.6001061.51684.788855e-09
0.6030531.5166615.117566e-09
0.6060141.5165235.447891e-09
0.6089891.5163865.779838e-09
0.6119791.5162516.113415e-09
0.6149841.5161166.448629e-09
0.6180041.5159836.785490e-09
0.6210381.5158517.124004e-09
0.6240871.5157217.464181e-09
0.6271521.5155917.806027e-09
0.6302311.5154638.149552e-09
0.6333251.5153368.494764e-09
0.6364351.515218.841671e-09
0.639561.5150859.190281e-09
0.64271.5149619.540603e-09
0.6458561.5148389.892645e-09
0.6490271.5147161.024642e-08
0.651.5146791.035500e-08
0.6522131.5145961.039028e-08
0.6554161.5144761.044133e-08
0.6586341.5143581.049262e-08
0.6618681.514241.054417e-08
0.6651171.5141231.059597e-08
0.6683831.5140081.064803e-08
0.6716651.5138931.070034e-08
0.6749631.5137791.075290e-08
0.6782771.5136671.080573e-08
0.6816071.5135551.085882e-08
0.6849541.5134441.091216e-08
0.6883171.5133341.096577e-08
0.6916961.5132251.101964e-08
0.6950931.5131171.107378e-08
0.6985051.5130091.112818e-08
0.71.5129631.115200e-08
0.7019351.5129031.105945e-08
0.7053821.5127971.089462e-08
0.7088451.5126921.072898e-08
0.7123251.5125881.056253e-08
0.7158231.5124851.039526e-08
0.7193371.5123831.022717e-08
0.7228691.5122811.005825e-08
0.7264191.512189.888503e-09
0.7299851.512089.717923e-09
0.7335691.5119819.546506e-09
0.7371711.5118829.374246e-09
0.7407911.5117849.201141e-09
0.7444281.5116879.027186e-09
0.7480831.511598.852377e-09
0.7517561.5114948.676709e-09
0.7554471.5113998.500179e-09
0.7591561.5113058.322782e-09
0.7628841.5112118.144515e-09
0.766631.5111187.965371e-09
0.7703941.5110257.785349e-09
0.7741761.5109337.604442e-09
0.7779781.5108427.422647e-09
0.7817971.5107517.239960e-09
0.7856361.5106617.056376e-09
0.7894931.5105716.871890e-09
0.793371.5104826.686498e-09
0.7972651.5103946.500196e-09
0.81.5103326.369400e-09
0.801181.5103066.463406e-09
0.8051131.5102196.776871e-09
0.8090671.5101327.091875e-09
0.8130391.5100467.408426e-09
0.8170311.509967.726532e-09
0.8210431.5098758.046199e-09
0.8250741.509798.367436e-09
0.8291251.5097068.690250e-09
0.8331961.5096229.014649e-09
0.8372871.5095399.340641e-09
0.8413981.5094569.668233e-09
0.8455291.5093739.997434e-09
0.8496811.5092911.032825e-08
0.8538531.509211.066069e-08
0.8580451.5091291.099477e-08
0.8622581.5090481.133048e-08
0.8664921.5089681.166784e-08
0.8707461.5088881.200686e-08
0.8750211.5088081.234755e-08
0.8793181.5087291.268990e-08
0.8836351.508651.303394e-08
0.8879741.5085721.337967e-08
0.8923341.5084941.372709e-08
0.8967151.5084161.407622e-08
0.91.5083591.433800e-08
0.9011181.5083391.435580e-08
0.9055421.5082621.442629e-08
0.9099881.5081851.449711e-08
0.9144561.5081091.456829e-08
0.9189461.5080331.463981e-08
0.9234581.5079571.471169e-08
0.9279921.5078821.478392e-08
0.9325491.5078061.485650e-08
0.9371281.5077311.492944e-08
0.9417291.5076571.500274e-08
0.9463531.5075821.507640e-08
0.9509991.5075081.515042e-08
0.9556691.5074341.522480e-08
0.9603611.5073611.529955e-08
0.9650761.5072871.537466e-08
0.9698151.5072141.545015e-08
0.9745761.5071411.552600e-08
0.9793621.5070681.560223e-08
0.984171.5069951.567883e-08
0.9890021.5069231.575581e-08
0.9938581.5068511.583316e-08
0.9987381.5067791.591090e-08
11.506761.593100e-08
1.003641.5067071.598903e-08
1.008571.5066351.606756e-08
1.013521.5065631.614647e-08
1.01851.5064921.622577e-08
1.02351.5064211.630545e-08
1.028521.5063491.638553e-08
1.033571.5062781.646601e-08
1.038651.5062071.654687e-08
1.043751.5061371.662814e-08
1.048871.5060661.670980e-08
1.054021.5059951.679186e-08
1.05921.5059251.687433e-08
1.06441.5058541.695720e-08
1.069631.5057841.704048e-08
1.074881.5057131.712417e-08
1.080151.5056431.720827e-08
1.085461.5055731.729278e-08
1.090791.5055031.737770e-08
1.096141.5054321.746305e-08
1.101531.5053621.754881e-08
1.106931.5052921.763499e-08
1.112371.5052221.772160e-08
1.117831.5051521.780863e-08
1.123321.5050821.789609e-08
1.128831.5050121.798398e-08
1.134381.5049421.807230e-08
1.139951.5048711.816105e-08
1.145541.5048011.825024e-08
1.151171.5047311.833987e-08
1.156821.5046611.842994e-08
1.16251.504591.852045e-08
1.168211.504521.861140e-08
1.173941.5044491.870280e-08
1.179711.5043791.879465e-08
1.18551.5043081.888695e-08
1.191321.5042381.897971e-08
1.197171.5041671.907292e-08
1.21.5041331.911800e-08
1.203051.5040961.950727e-08
1.208961.5040252.026143e-08
1.214891.5039542.101930e-08
1.220861.5038822.178089e-08
1.226851.5038112.254622e-08
1.232871.5037392.331531e-08
1.238931.5036682.408817e-08
1.245011.5035962.486483e-08
1.251121.5035242.564530e-08
1.257271.5034522.642960e-08
1.263441.5033792.721775e-08
1.269641.5033072.800978e-08
1.275881.5032342.880569e-08
1.282141.5031612.960551e-08
1.288441.5030883.040926e-08
1.294761.5030153.121695e-08
1.301121.5029413.202861e-08
1.307511.5028673.284426e-08
1.313931.5027933.366391e-08
1.320381.5027193.448758e-08
1.326861.5026453.531530e-08
1.333381.502573.614708e-08
1.339931.5024953.698295e-08
1.34651.5024193.782292e-08
1.353121.5023443.866701e-08
1.359761.5022683.951525e-08
1.366441.5021924.036766e-08
1.373141.5021154.122424e-08
1.379891.5020384.208504e-08
1.386661.5019614.295006e-08
1.393471.5018844.381933e-08
1.41.5018094.465300e-08
1.400311.5018064.470291e-08
1.407191.5017274.580199e-08
1.41411.5016494.690647e-08
1.421041.501574.801636e-08
1.428021.5014914.913171e-08
1.435031.5014115.025254e-08
1.442071.5013315.137886e-08
1.449161.5012515.251072e-08
1.456271.501175.364813e-08
1.463421.5010895.479113e-08
1.470611.5010075.593974e-08
1.477831.5009255.709399e-08
1.485081.5008425.825391e-08
1.492371.5007595.941953e-08
1.49971.5006766.059086e-08
1.507071.5005926.176795e-08
1.514471.5005076.295082e-08
1.52191.5004226.413949e-08
1.529371.5003376.533400e-08
1.536881.5002516.653438e-08
1.544431.5001656.774065e-08
1.552011.5000786.895284e-08
1.559631.499997.017098e-08
1.567291.4999037.139511e-08
1.574991.4998147.262525e-08
1.582721.4997257.386142e-08
1.590491.4996357.510367e-08
1.59831.4995457.635201e-08
1.61.4995257.662400e-08
1.606151.4994548.406128e-08
1.614031.4993639.360410e-08
1.621961.4992711.031938e-07
1.629921.4991781.128305e-07
1.637921.4990851.225146e-07
1.645971.4989911.322462e-07
1.654051.4988971.420256e-07
1.662171.4988011.518531e-07
1.670331.4987051.617287e-07
1.678531.4986091.716529e-07
1.686771.4985121.816258e-07
1.695051.4984141.916476e-07
1.703381.4983152.017187e-07
1.711741.4982162.118392e-07
1.720151.4981162.220094e-07
1.728591.4980152.322296e-07
1.737081.4979132.424999e-07
1.745611.4978112.528206e-07
1.754181.4977082.631920e-07
1.762791.4976042.736144e-07
1.771451.4974992.840879e-07
1.780141.4973942.946128e-07
1.788881.4972883.051895e-07
1.797671.4971813.158180e-07
1.81.4971523.186400e-07
1.806491.4970733.348019e-07
1.815361.4969643.568753e-07
1.824281.4968543.790571e-07
1.833231.4967444.013478e-07
1.842241.4966324.237480e-07
1.851281.496524.462581e-07
1.860371.4964064.688787e-07
1.869511.4962924.916104e-07
1.878681.4961775.144538e-07
1.887911.4960615.374092e-07
1.897181.4959445.604774e-07
1.906491.4958265.836589e-07
1.915851.4957076.069542e-07
1.925261.4955876.303638e-07
1.934711.4954666.538884e-07
1.944211.4953446.775285e-07
1.953761.4952217.012847e-07
1.963351.4950967.251575e-07
1.972991.4949717.491476e-07
1.982681.4948457.732554e-07
1.992411.4947177.974816e-07
21.4946188.163600e-07
2.00221.4945898.298020e-07
2.012031.4944598.899580e-07
2.021911.4943289.504094e-07
2.031831.4941961.011158e-06
2.041811.4940631.072204e-06
2.051841.4939281.133550e-06
2.061911.4937931.195198e-06
2.072031.4936561.257148e-06
2.082211.4935181.319402e-06
2.092431.4933791.381962e-06
2.10271.4932381.444829e-06
2.113031.4930961.508005e-06
2.12341.4929531.571491e-06
2.133831.4928081.635288e-06
2.144311.4926621.699399e-06
2.154831.4925151.763825e-06
2.165411.4923671.828567e-06
2.176051.4922171.893627e-06
2.186731.4920651.959006e-06
2.197471.4919132.024706e-06
2.21.4918762.040200e-06
2.208261.4917582.074894e-06
2.21911.4916032.120448e-06
2.231.4914452.166227e-06
2.240941.4912872.212230e-06
2.251951.4911262.258458e-06
2.2631.4909652.304914e-06
2.274121.4908012.351598e-06
2.285281.4906362.398511e-06
2.29651.490472.445655e-06
2.307781.4903022.493030e-06
2.319111.4901322.540637e-06
2.33051.4899612.588479e-06
2.341941.4897882.636555e-06
2.353441.4896132.684867e-06
2.364991.4894362.733417e-06
2.37661.4892582.782204e-06
2.388271.4890782.831232e-06
2.41.4888962.880500e-06

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
—