Optical constants

Refractive index of N-PSK53 (SCHOTT)

N-PSK53: n,k 0.31–2.5 µm

Data
formula 2 + tabulated k
Range
0.31–2.5 µm
Temperature
293 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength. Note: k data cover 320-2500 nm only; k = 0 elsewhere in the n range 310-2500 nm.

At one wavelength

Range 0.31–2.5 µm
Refractive index n
1.62014
Extinction coefficient k
1.20118e-08
Permittivity ε1
2.62485
Permittivity ε2
3.89215e-08
Absorption coefficient α
0.00256883 cm⁻¹
Penetration depth δ = λ/(2πk)
7.78564e+09 nm
Abbe number Vd
63.48
Chromatic dispersion dn/dλ
-0.0504857 µm⁻¹
Group index ng
1.6498
Group velocity dispersion
88.2596 fs²/mm
Dispersion parameter D
-481.503 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

# N-PSK53 (SCHOTT): N-PSK53
schott_n_psk53 = ls.fetch_refractiveindex("specs", "SCHOTT-optical", "N-PSK53", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(schott_n_psk53.range_nm)  # (310, 2500) nm
eps = schott_n_psk53.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=1.3434087λ2λ2−0.00675074317+0.241417935λ2λ2−0.0219910513+0.952896897λ2λ2−103.551457

Valid from 0.31 to 2.5 µm.

Coefficients as stored
CiValue
C10.0
C21.3434087
C30.00675074317
C40.241417935
C50.0219910513
C60.952896897
C7103.551457

Comments and conditions

inquiry glass

Conditions

temperature
293 K

Properties

thermal dispersion
type: formula A, coefficients: -9.29e-06 5.78e-09 8.87e-13 4.59e-07 5.86e-10 0.155
nd
1.62014
Vd
63.48
glass code
620635.360
glass status
special
density
value: 3600
thermal expansion
value: 9.4e-06, temperature range: 243 343; value: 1.09e-05, temperature range: 293 573
dPgF
0.0053
resistance
acid: 52.3; stain: 1.0; alkali: 1.2; climatic: 2.0; phosphate: 4.3

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 293.0 K): dn/dT = -4.04e-06 K⁻¹ at 633 nm, dn/dT = -4.43e-06 K⁻¹ at 1310 nm, dn/dT = -4.45e-06 K⁻¹ at 1550 nm
Notes on the source data (kept exactly as published):
  • k data cover 320-2500 nm only; k = 0 elsewhere in the n range 310-2500 nm

References

Cite

SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com); See also SCHOTT 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 422 wavelengths, the same grid as the API and the library
N-PSK53 (SCHOTT), N-PSK53: n and k versus wavelength
λ (µm)nk
0.311.6604460
0.3116261.6598110
0.3132611.6591840
0.3149041.6585660
0.3165561.6579560
0.3182161.6573550
0.3198851.6567610
0.321.6567213.571800e-06
0.3215631.6561763.364016e-06
0.323251.6555983.139835e-06
0.3249461.6550272.914478e-06
0.326651.6544652.687938e-06
0.3283641.6539092.460211e-06
0.3300861.6533612.231288e-06
0.3318181.652822.001165e-06
0.3335581.6522861.769835e-06
0.3341.6521521.711100e-06
0.3353081.6517591.629056e-06
0.3370671.6512391.518712e-06
0.3388351.6507251.407788e-06
0.3406121.6502191.296283e-06
0.3423991.6497181.184193e-06
0.3441951.6492241.071515e-06
0.3461.6487369.582453e-07
0.3478151.6482558.443820e-07
0.349641.6477797.299214e-07
0.351.6476867.073100e-07
0.3514741.647316.661826e-07
0.3533171.6468466.147277e-07
0.3551711.6463885.630028e-07
0.3570341.6459365.110067e-07
0.3589061.645494.587378e-07
0.3607891.6450494.061947e-07
0.3626821.6446143.533761e-07
0.3645841.6441843.002803e-07
0.3651.6440912.886700e-07
0.3664961.6437592.679537e-07
0.3684191.6433392.413393e-07
0.371.6432.194500e-07
0.3703511.6429252.162168e-07
0.3722941.6425161.983424e-07
0.3742471.6421121.803741e-07
0.376211.6417121.623116e-07
0.3781831.6413181.441543e-07
0.381.6409611.274400e-07
0.3801671.6409281.265937e-07
0.3821611.6405431.164978e-07
0.3841661.6401631.063491e-07
0.3861811.6397879.614706e-08
0.3882071.6394168.589153e-08
0.391.6390927.681300e-08
0.3902431.6390497.608049e-08
0.392291.6386876.991264e-08
0.3943481.6383286.371245e-08
0.3964161.6379755.747972e-08
0.3984961.6376255.121431e-08
0.41.6373764.668200e-08
0.4005861.6372794.581282e-08
0.4026871.6369384.269664e-08
0.40481.63663.956412e-08
0.4051.6365693.926700e-08
0.4069231.6362673.787051e-08
0.4090581.6359373.632043e-08
0.4112031.6356123.476222e-08
0.413361.635293.319584e-08
0.4155281.6349713.162125e-08
0.4177081.6346573.003839e-08
0.4198991.6343462.844723e-08
0.421.6343322.837400e-08
0.4221021.6340392.795825e-08
0.4243161.6337352.752027e-08
0.4265421.6334352.707999e-08
0.4287791.6331382.663740e-08
0.4310281.6328452.619249e-08
0.4332891.6325552.574525e-08
0.4355621.6322682.529566e-08
0.4361.6322132.520900e-08
0.4378471.6319842.485775e-08
0.4401431.6317042.442090e-08
0.4424521.6314272.398176e-08
0.4447731.6311532.354031e-08
0.4471061.6308822.309654e-08
0.4494511.6306142.265045e-08
0.4518091.6303492.220202e-08
0.4541791.6300882.175123e-08
0.4565611.6298292.129808e-08
0.4589561.6295732.084256e-08
0.461.6294622.064400e-08
0.4613641.6293192.037606e-08
0.4637841.6290691.990052e-08
0.4662161.6288211.942248e-08
0.4686621.6285761.894194e-08
0.471121.6283341.845887e-08
0.4735921.6280941.797327e-08
0.4760761.6278571.748512e-08
0.4785731.6276231.699441e-08
0.4810831.6273911.650113e-08
0.4836071.6271621.600526e-08
0.4861441.6269351.550679e-08
0.4886941.6267111.500570e-08
0.4912571.6264891.450199e-08
0.4938341.6262691.399563e-08
0.4964241.6260521.348662e-08
0.4990281.6258371.297494e-08
0.51.6257581.278400e-08
0.5016461.6256241.263829e-08
0.5042771.6254141.240534e-08
0.5069221.6252061.217117e-08
0.5095821.6251.193576e-08
0.5122551.6247961.169913e-08
0.5149421.6245951.146125e-08
0.5176431.6243951.122213e-08
0.5203581.6241981.098175e-08
0.5230871.6240021.074011e-08
0.5258311.6238091.049720e-08
0.528591.6236181.025302e-08
0.5313621.6234281.000756e-08
0.5341491.6232419.760806e-09
0.5369511.6230569.512762e-09
0.5397681.6228729.263416e-09
0.5425991.622699.012763e-09
0.5454451.6225118.760795e-09
0.5461.6224768.711700e-09
0.5483071.6223338.874468e-09
0.5511831.6221579.077430e-09
0.5540741.6219829.281456e-09
0.556981.621819.486552e-09
0.5599021.6216399.692725e-09
0.5628391.6214699.899978e-09
0.5657911.6213021.010832e-08
0.5687591.6211361.031775e-08
0.5717421.6209721.052829e-08
0.5747421.6208091.073992e-08
0.5777561.6206481.095267e-08
0.581.620531.111100e-08
0.5807871.6204891.120427e-08
0.5838331.6203311.156536e-08
0.5868961.6201751.192834e-08
0.5899741.620021.229322e-08
0.5930691.6198671.266002e-08
0.596181.6197151.302874e-08
0.5993071.6195641.339940e-08
0.6024511.6194161.377200e-08
0.6056111.6192681.414656e-08
0.6087881.6191221.452308e-08
0.6119811.6189771.490157e-08
0.6151911.6188341.528205e-08
0.6184181.6186921.566453e-08
0.621.6186231.585200e-08
0.6216621.6185511.580654e-08
0.6249231.6184121.571735e-08
0.6282011.6182731.562770e-08
0.6314961.6181361.553757e-08
0.6348091.6180011.544698e-08
0.6381391.6178661.535591e-08
0.6414861.6177331.526436e-08
0.6448511.6176011.517233e-08
0.6482341.617471.507981e-08
0.6516341.6173411.498682e-08
0.6550521.6172121.489333e-08
0.6584881.6170851.479935e-08
0.661.617031.475800e-08
0.6619421.6169591.469250e-08
0.6654141.6168341.457540e-08
0.6689051.616711.445769e-08
0.6724131.6165871.433936e-08
0.6759411.6164651.422041e-08
0.6794861.6163441.410083e-08
0.683051.6162241.398063e-08
0.6866331.6161051.385979e-08
0.6902351.6159871.373832e-08
0.6938561.615871.361622e-08
0.6974951.6157541.349347e-08
0.71.6156751.340900e-08
0.7011541.6156391.343110e-08
0.7048321.6155251.350156e-08
0.7085291.6154121.357238e-08
0.7122461.61531.364357e-08
0.7159821.6151881.371514e-08
0.7197371.6150781.378708e-08
0.7235131.6149681.385940e-08
0.7273081.614861.393210e-08
0.7311231.6147521.400518e-08
0.7349581.6146451.407864e-08
0.7388131.6145381.415249e-08
0.7426891.6144331.422672e-08
0.7465841.6143281.430135e-08
0.7505011.6142241.437637e-08
0.7544371.6141211.445178e-08
0.7583951.6140191.452758e-08
0.7623731.6139171.460379e-08
0.7663721.6138161.468039e-08
0.7703921.6137161.475739e-08
0.7744331.6136161.483480e-08
0.7784951.6135181.491262e-08
0.7825791.6134191.499084e-08
0.7866841.6133221.506947e-08
0.790811.6132251.514852e-08
0.7949581.6131291.522798e-08
0.7991281.6130331.530786e-08
0.803321.6129381.538815e-08
0.8075341.6128441.546887e-08
0.811771.612751.555001e-08
0.8160281.6126571.563158e-08
0.8203081.6125641.571357e-08
0.8246111.6124721.579600e-08
0.8289371.6123811.587886e-08
0.8332851.612291.596215e-08
0.8376561.61221.604588e-08
0.842051.612111.613004e-08
0.8464671.612021.621465e-08
0.8509071.6119311.629970e-08
0.855371.6118431.638520e-08
0.8598571.6117551.647115e-08
0.8643671.6116671.655755e-08
0.8689011.611581.664440e-08
0.8734591.6114941.673171e-08
0.8780411.6114081.681947e-08
0.8826471.6113221.690770e-08
0.8872771.6112371.699639e-08
0.8919311.6111521.708554e-08
0.8966091.6110671.717516e-08
0.9013131.6109831.726525e-08
0.906041.6108991.735582e-08
0.9107931.6108161.744686e-08
0.9155711.6107331.753837e-08
0.9203731.610651.763037e-08
0.9252011.6105681.772285e-08
0.9300541.6104861.781581e-08
0.9349331.6104041.790926e-08
0.9398371.6103231.800321e-08
0.9447671.6102411.809764e-08
0.9497221.6101611.819257e-08
0.9547041.610081.828800e-08
0.9597121.611.838393e-08
0.9647461.609921.848036e-08
0.9698071.609841.857730e-08
0.9748941.609761.867474e-08
0.9800081.6096811.877270e-08
0.9851481.6096021.887117e-08
0.9903161.6095231.897016e-08
0.995511.6094441.906967e-08
1.000731.6093661.916970e-08
1.005981.6092881.927025e-08
1.011261.6092091.937133e-08
1.016561.6091311.947294e-08
1.02191.6090541.957509e-08
1.027261.6089761.967777e-08
1.032641.6088981.978098e-08
1.038061.6088211.988474e-08
1.043511.6087441.998905e-08
1.048981.6086672.009390e-08
1.054481.608592.019930e-08
1.061.6085132.030500e-08
1.060011.6085132.031064e-08
1.065571.6084362.266293e-08
1.071161.6083592.502756e-08
1.076781.6082822.740459e-08
1.082431.6082052.979410e-08
1.088111.6081293.219613e-08
1.093821.6080523.461077e-08
1.099551.6079763.703807e-08
1.105321.6078993.947810e-08
1.111121.6078224.193094e-08
1.116951.6077464.439664e-08
1.122811.6076694.687527e-08
1.12871.6075934.936690e-08
1.134621.6075165.187161e-08
1.140571.607445.438945e-08
1.146551.6073635.692050e-08
1.152561.6072865.946483e-08
1.158611.607216.202250e-08
1.164691.6071336.459359e-08
1.17081.6070566.717816e-08
1.176941.6069796.977630e-08
1.183111.6069027.238806e-08
1.189321.6068257.501352e-08
1.195561.6067477.765275e-08
1.201831.606678.030583e-08
1.208131.6065928.297282e-08
1.214471.6065158.565381e-08
1.220841.6064378.834885e-08
1.227241.6063599.105804e-08
1.233681.606289.378143e-08
1.240151.6062029.651911e-08
1.246661.6061249.927115e-08
1.25321.6060451.020376e-07
1.259771.6059661.048186e-07
1.266381.6058871.076142e-07
1.273021.6058071.104244e-07
1.27971.6057281.132494e-07
1.286411.6056481.160892e-07
1.293161.6055681.189439e-07
1.299941.6054871.218136e-07
1.306761.6054071.246983e-07
1.313621.6053261.275981e-07
1.320511.6052451.305132e-07
1.327431.6051631.334436e-07
1.33441.6050811.363893e-07
1.34141.6049991.393505e-07
1.348431.6049171.423272e-07
1.355511.6048341.453195e-07
1.362621.6047511.483275e-07
1.369761.6046671.513513e-07
1.376951.6045831.543910e-07
1.384171.6044991.574466e-07
1.391431.6044141.605182e-07
1.398731.6043291.636060e-07
1.406071.6042441.667099e-07
1.413441.6041581.698301e-07
1.420861.6040721.729667e-07
1.428311.6039851.761198e-07
1.43581.6038981.792894e-07
1.443331.603811.824756e-07
1.45091.6037221.856785e-07
1.458521.6036331.888982e-07
1.466171.6035441.921348e-07
1.473861.6034541.953884e-07
1.481591.6033641.986591e-07
1.489361.6032742.019469e-07
1.497171.6031822.052519e-07
1.505031.6030912.085743e-07
1.512921.6029982.119142e-07
1.520861.6029052.152715e-07
1.528831.6028122.186465e-07
1.531.6027982.191400e-07
1.536851.6027182.375205e-07
1.544911.6026232.591430e-07
1.553021.6025282.808789e-07
1.561161.6024323.027288e-07
1.569351.6023353.246933e-07
1.577591.6022383.467730e-07
1.585861.602143.689686e-07
1.594181.6020423.912805e-07
1.602541.6019424.137095e-07
1.610951.6018424.362562e-07
1.61941.6017424.589211e-07
1.627891.601644.817049e-07
1.636431.6015385.046083e-07
1.645021.6014355.276317e-07
1.653641.6013315.507760e-07
1.662321.6012275.740416e-07
1.671041.6011225.974293e-07
1.67981.6010166.209396e-07
1.688611.6009096.445733e-07
1.697471.6008016.683310e-07
1.706381.6006926.922132e-07
1.715331.6005837.162208e-07
1.724321.6004737.403542e-07
1.733371.6003627.646143e-07
1.742461.6002497.890016e-07
1.75161.6001368.135169e-07
1.760791.6000228.381607e-07
1.770031.5999088.629338e-07
1.779311.5997928.878369e-07
1.788641.5996759.128705e-07
1.798031.5995579.380355e-07
1.807461.5994389.633325e-07
1.816941.5993189.887622e-07
1.826471.5991971.014325e-06
1.836051.5990751.040022e-06
1.845681.5989521.065854e-06
1.855361.5988281.091822e-06
1.865091.5987031.117926e-06
1.874881.5985771.144166e-06
1.884711.5984491.170544e-06
1.89461.5983211.197061e-06
1.904541.5981911.223717e-06
1.914531.598061.250512e-06
1.924571.5979281.277448e-06
1.934671.5977941.304526e-06
1.944811.5976591.331745e-06
1.955011.5975241.359107e-06
1.965271.5973861.386613e-06
1.971.5973231.399300e-06
1.975581.5972481.455620e-06
1.985941.5971081.560238e-06
1.996361.5969671.665405e-06
2.006831.5968241.771123e-06
2.017361.596681.877396e-06
2.027941.5965351.984226e-06
2.038581.5963882.091617e-06
2.049271.596242.199571e-06
2.060021.5960912.308092e-06
2.070831.5959392.417181e-06
2.081691.5957872.526843e-06
2.092611.5956332.637080e-06
2.103581.5954772.747896e-06
2.114621.595322.859292e-06
2.125711.5951612.971273e-06
2.136861.5950013.083842e-06
2.148071.5948393.197001e-06
2.159341.5946753.310753e-06
2.170661.594513.425102e-06
2.182051.5943423.540051e-06
2.19351.5941743.655603e-06
2.2051.5940033.771761e-06
2.216571.5938313.888528e-06
2.22821.5936574.005908e-06
2.239881.5934814.123903e-06
2.251631.5933034.242518e-06
2.263441.5931234.361754e-06
2.275321.5929424.481616e-06
2.287251.5927584.602107e-06
2.299251.5925734.723230e-06
2.311311.5923854.844988e-06
2.323431.5921964.967385e-06
2.3251.5921714.983200e-06
2.335621.5920045.278615e-06
2.347871.5918115.619380e-06
2.360191.5916155.961933e-06
2.372571.5914176.306282e-06
2.385011.5912176.652438e-06
2.397521.5910157.000409e-06
2.41011.5908117.350205e-06
2.422741.5906047.701837e-06
2.435451.5903958.055313e-06
2.448231.5901848.410643e-06
2.461071.5899718.767837e-06
2.473981.5897559.126904e-06
2.486951.5895369.487856e-06
2.51.5893169.850700e-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
—