Optical constants

Refractive index of S-LAH60 (OHARA)

S-LAH60: 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
1.834
Extinction coefficient k
1.51379e-08
Permittivity ε1
3.36354
Permittivity ε2
5.55255e-08
Absorption coefficient α
0.00323737 cm⁻¹
Penetration depth δ = λ/(2πk)
6.17785e+09 nm
Abbe number Vd
37.16
Chromatic dispersion dn/dλ
-0.114107 µm⁻¹
Group index ng
1.90104
Group velocity dispersion
218.814 fs²/mm
Dispersion parameter D
-1193.75 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-LAH60 (OHARA): S-LAH60
ohara_s_lah60 = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-LAH60", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_lah60.range_nm)  # (340, 2400) nm
eps = ohara_s_lah60.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=1.95243469λ2λ2−0.0106442437+0.30710021λ2λ2−0.0456735302+1.56578094λ2λ2−110.28141

Valid from 0.34 to 2.4 µm.

Coefficients as stored
CiValue
C10.0
C21.95243469
C30.0106442437
C40.30710021
C50.0456735302
C61.56578094
C7110.28141

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 6.88e-06 1.25e-08 -3.24e-11 6.63e-07 7.1e-10 0.271
nd
1.834000
Vd
37.160487
glass code
834372
density
value: 4430
thermal expansion
value: 5.6e-06, temperature range: 243 343; value: 7.1e-06, temperature range: 293 573
dPgF
-0.0037
resistance
acid: 4.2; climatic: 1.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 5.71e-06 K⁻¹ at 633 nm, dn/dT = 4.55e-06 K⁻¹ at 1310 nm, dn/dT = 4.46e-06 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-LAH60 (OHARA), S-LAH60: n and k versus wavelength
λ (µm)nk
0.341.9121959.487500e-06
0.3416691.9107958.512462e-06
0.3433471.9094197.532637e-06
0.3450331.9080666.548002e-06
0.3467271.9067375.558531e-06
0.3484291.9054294.564202e-06
0.351.9042483.646800e-06
0.350141.9041443.620445e-06
0.3518591.9028793.296966e-06
0.3535871.9016362.971898e-06
0.3553231.9004122.645234e-06
0.3570681.8992092.316967e-06
0.3588211.8980241.987087e-06
0.361.8972411.765200e-06
0.3605831.8968591.718715e-06
0.3623531.8957111.577441e-06
0.3641321.8945821.435473e-06
0.365921.8934711.292808e-06
0.3677171.8923761.149442e-06
0.3695221.8912991.005373e-06
0.371.8910179.672400e-07
0.3713361.8902389.132751e-07
0.373161.8891938.396542e-07
0.3749921.8881637.656719e-07
0.3768331.8871496.913264e-07
0.3786831.8861516.166158e-07
0.381.8854525.634500e-07
0.3805431.8851675.544030e-07
0.3824111.8841975.232522e-07
0.3842891.8832424.919485e-07
0.3861761.8823014.604911e-07
0.3880721.8813734.288792e-07
0.3899771.8804583.971122e-07
0.391.8804473.967300e-07
0.3918921.8795573.692736e-07
0.3938161.8786683.413481e-07
0.395751.8777933.132855e-07
0.3976931.8769292.850851e-07
0.3996451.8760772.567462e-07
0.41.8759242.516000e-07
0.4016081.8752382.431840e-07
0.403581.874412.328612e-07
0.4055611.8735932.224878e-07
0.4075521.8727872.120634e-07
0.4095531.8719932.015878e-07
0.4115641.8712091.910608e-07
0.4135851.8704361.804821e-07
0.4156161.8696741.698515e-07
0.4176561.8689211.591686e-07
0.4197071.8681791.484334e-07
0.421.8680741.469000e-07
0.4217681.8674461.427047e-07
0.4238391.8667231.377904e-07
0.425921.866011.328519e-07
0.4280111.8653061.278892e-07
0.4301121.8646111.229021e-07
0.4322241.8639251.178905e-07
0.4343471.8632491.128543e-07
0.4364791.862581.077933e-07
0.4386221.8619211.027076e-07
0.441.8615039.943800e-08
0.4407761.8612699.844937e-08
0.442941.8606279.569165e-08
0.4451151.8599929.292039e-08
0.44731.8593659.013552e-08
0.4494971.8587468.733698e-08
0.4517041.8581358.452470e-08
0.4539211.8575318.169861e-08
0.456151.8569357.885865e-08
0.458391.8563477.600474e-08
0.461.855937.395300e-08
0.4606411.8557657.330931e-08
0.4629021.8551917.103639e-08
0.4651751.8546246.875231e-08
0.4674591.8540636.645702e-08
0.4697541.853516.415045e-08
0.4720611.8529636.183256e-08
0.4743791.8524235.950329e-08
0.4767081.8518895.716259e-08
0.4790481.8513625.481039e-08
0.481.851155.385400e-08
0.48141.8508415.288315e-08
0.4837641.8503265.124455e-08
0.4861391.8498174.959790e-08
0.4885261.8493154.794317e-08
0.4909251.8488184.628031e-08
0.4933351.8483274.460928e-08
0.4957581.8478424.293006e-08
0.4981921.8473624.124258e-08
0.51.8470113.998900e-08
0.5006381.8468883.970265e-08
0.5030961.846423.859911e-08
0.5055661.8459573.749015e-08
0.5080481.8454993.637574e-08
0.5105431.8450463.525586e-08
0.513051.8445993.413048e-08
0.5155691.8441573.299958e-08
0.51811.8437193.186313e-08
0.5206441.8432873.072109e-08
0.52321.842862.957345e-08
0.5257691.8424372.842017e-08
0.5283511.8420192.726123e-08
0.5309451.8416062.609660e-08
0.5335521.8411972.492625e-08
0.5361721.8407932.375016e-08
0.5388041.8403942.256829e-08
0.541451.8399982.138061e-08
0.5441081.8396082.018711e-08
0.546781.8392211.898775e-08
0.5494641.8388391.778249e-08
0.551.8387631.754200e-08
0.5521621.838461.740375e-08
0.5548731.8380861.723040e-08
0.5575981.8377161.705621e-08
0.5603351.837351.688115e-08
0.5630871.8369881.670524e-08
0.5658511.836631.652846e-08
0.568631.8362751.635082e-08
0.5714221.8359251.617230e-08
0.5742271.8355781.599291e-08
0.5770471.8352351.581263e-08
0.579881.8348951.563147e-08
0.5827271.8345591.544942e-08
0.5855881.8342261.526648e-08
0.5884641.8338971.508264e-08
0.5913531.8335711.489790e-08
0.5942561.8332491.471225e-08
0.5971741.832931.452568e-08
0.61.8326261.434500e-08
0.6001061.8326151.434754e-08
0.6030531.8323021.441802e-08
0.6060141.8319931.448885e-08
0.6089891.8316871.456002e-08
0.6119791.8313841.463155e-08
0.6149841.8310841.470342e-08
0.6180041.8307871.477565e-08
0.6210381.8304931.484823e-08
0.6240871.8302021.492117e-08
0.6271521.8299141.499447e-08
0.6302311.8296291.506812e-08
0.6333251.8293461.514214e-08
0.6364351.8290671.521652e-08
0.639561.828791.529127e-08
0.64271.8285161.536638e-08
0.6458561.8282441.544186e-08
0.6490271.8279751.551772e-08
0.651.8278941.554100e-08
0.6522131.8277091.534671e-08
0.6554161.8274461.506561e-08
0.6586341.8271841.478313e-08
0.6618681.8269261.449926e-08
0.6651171.826671.421400e-08
0.6683831.8264161.392733e-08
0.6716651.8261651.363926e-08
0.6749631.8259161.334978e-08
0.6782771.8256691.305887e-08
0.6816071.8254251.276654e-08
0.6849541.8251821.247277e-08
0.6883171.8249431.217756e-08
0.6916961.8247051.188090e-08
0.6950931.824471.158278e-08
0.6985051.8242361.128320e-08
0.71.8241351.115200e-08
0.7019351.8240051.105945e-08
0.7053821.8237761.089462e-08
0.7088451.8235491.072898e-08
0.7123251.8233241.056253e-08
0.7158231.8231011.039526e-08
0.7193371.822881.022717e-08
0.7228691.8226611.005825e-08
0.7264191.8224449.888503e-09
0.7299851.8222289.717923e-09
0.7335691.8220159.546506e-09
0.7371711.8218049.374246e-09
0.7407911.8215949.201141e-09
0.7444281.8213869.027186e-09
0.7480831.821188.852377e-09
0.7517561.8209758.676709e-09
0.7554471.8207738.500179e-09
0.7591561.8205728.322782e-09
0.7628841.8203728.144515e-09
0.766631.8201747.965371e-09
0.7703941.8199787.785349e-09
0.7741761.8197847.604442e-09
0.7779781.8195917.422647e-09
0.7817971.81947.239960e-09
0.7856361.819217.056376e-09
0.7894931.8190216.871890e-09
0.793371.8188356.686498e-09
0.7972651.8186496.500196e-09
0.81.8185216.369400e-09
0.801181.8184656.463406e-09
0.8051131.8182836.776871e-09
0.8090671.8181027.091875e-09
0.8130391.8179227.408426e-09
0.8170311.8177447.726532e-09
0.8210431.8175678.046199e-09
0.8250741.8173918.367436e-09
0.8291251.8172168.690250e-09
0.8331961.8170439.014649e-09
0.8372871.8168719.340641e-09
0.8413981.8167019.668233e-09
0.8455291.8165319.997434e-09
0.8496811.8163631.032825e-08
0.8538531.8161961.066069e-08
0.8580451.816031.099477e-08
0.8622581.8158651.133048e-08
0.8664921.8157011.166784e-08
0.8707461.8155391.200686e-08
0.8750211.8153771.234755e-08
0.8793181.8152171.268990e-08
0.8836351.8150581.303394e-08
0.8879741.8148991.337967e-08
0.8923341.8147421.372709e-08
0.8967151.8145861.407622e-08
0.91.8144691.433800e-08
0.9011181.814431.444497e-08
0.9055421.8142761.486844e-08
0.9099881.8141221.529398e-08
0.9144561.813971.572161e-08
0.9189461.8138181.615134e-08
0.9234581.8136671.658319e-08
0.9279921.8135181.701715e-08
0.9325491.8133691.745324e-08
0.9371281.813221.789148e-08
0.9417291.8130731.833186e-08
0.9463531.8129271.877441e-08
0.9509991.8127811.921913e-08
0.9556691.8126361.966604e-08
0.9603611.8124922.011513e-08
0.9650761.8123482.056644e-08
0.9698151.8122062.101996e-08
0.9745761.8120642.147571e-08
0.9793621.8119222.193369e-08
0.984171.8117822.239392e-08
0.9890021.8116422.285642e-08
0.9938581.8115032.332118e-08
0.9987381.8113642.378823e-08
11.8113282.390900e-08
1.003641.8112262.417058e-08
1.008571.8110892.452452e-08
1.013521.8109522.488020e-08
1.01851.8108162.523763e-08
1.02351.810682.559681e-08
1.028521.8105452.595775e-08
1.033571.810412.632047e-08
1.038651.8102762.668497e-08
1.043751.8101432.705125e-08
1.048871.810012.741934e-08
1.054021.8098772.778923e-08
1.05921.8097452.816094e-08
1.06441.8096132.853448e-08
1.069631.8094822.890984e-08
1.074881.8093512.928706e-08
1.080151.8092212.966612e-08
1.085461.8090913.004704e-08
1.090791.8089613.042984e-08
1.096141.8088323.081451e-08
1.101531.8087033.120108e-08
1.106931.8085753.158954e-08
1.112371.8084473.197991e-08
1.117831.8083193.237219e-08
1.123321.8081913.276640e-08
1.128831.8080643.316255e-08
1.134381.8079373.356064e-08
1.139951.807813.396069e-08
1.145541.8076833.436270e-08
1.151171.8075573.476669e-08
1.156821.8074313.517265e-08
1.16251.8073053.558062e-08
1.168211.8071793.599058e-08
1.173941.8070543.640256e-08
1.179711.8069293.681656e-08
1.18551.8068033.723259e-08
1.191321.8066783.765067e-08
1.197171.8065543.807080e-08
1.21.8064933.827400e-08
1.203051.8064293.888356e-08
1.208961.8063044.006453e-08
1.214891.8061794.125130e-08
1.220861.8060554.244390e-08
1.226851.805934.364235e-08
1.232871.8058064.484668e-08
1.238931.8056824.605693e-08
1.245011.8055574.727312e-08
1.251121.8054334.849529e-08
1.257271.8053094.972345e-08
1.263441.8051845.095764e-08
1.269641.805065.219789e-08
1.275881.8049355.344424e-08
1.282141.8048115.469670e-08
1.288441.8046865.595531e-08
1.294761.8045625.722010e-08
1.301121.8044375.849110e-08
1.307511.8043125.976835e-08
1.313931.8041876.105186e-08
1.320381.8040626.234167e-08
1.326861.8039376.363782e-08
1.333381.8038116.494033e-08
1.339931.8036866.624924e-08
1.34651.803566.756458e-08
1.353121.8034346.888637e-08
1.359761.8033087.021465e-08
1.366441.8031817.154945e-08
1.373141.8030557.289081e-08
1.379891.8029287.423876e-08
1.386661.8028017.559332e-08
1.393471.8026737.695453e-08
1.41.8025517.826000e-08
1.400311.8025467.829749e-08
1.407191.8024177.912289e-08
1.41411.8022897.995234e-08
1.421041.802168.078586e-08
1.428021.8020318.162348e-08
1.435031.8019028.246521e-08
1.442071.8017728.331108e-08
1.449161.8016428.416109e-08
1.456271.8015118.501528e-08
1.463421.801388.587367e-08
1.470611.8012498.673627e-08
1.477831.8011178.760310e-08
1.485081.8009858.847419e-08
1.492371.8008528.934956e-08
1.49971.8007189.022922e-08
1.507071.8005859.111321e-08
1.514471.800459.200153e-08
1.52191.8003159.289422e-08
1.529371.800189.379129e-08
1.536881.8000449.469276e-08
1.544431.7999089.559866e-08
1.552011.799779.650901e-08
1.559631.7996339.742383e-08
1.567291.7994949.834314e-08
1.574991.7993559.926696e-08
1.582721.7992161.001953e-07
1.590491.7990751.011282e-07
1.59831.7989341.020657e-07
1.61.7989041.022700e-07
1.606151.7987931.062272e-07
1.614031.798651.113046e-07
1.621961.7985071.164070e-07
1.629921.7983631.215345e-07
1.637921.7982191.266871e-07
1.645971.7980731.318650e-07
1.654051.7979271.370684e-07
1.662171.797781.422973e-07
1.670331.7976321.475519e-07
1.678531.7974841.528322e-07
1.686771.7973341.581385e-07
1.695051.7971841.634709e-07
1.703381.7970331.688294e-07
1.711741.7968811.742143e-07
1.720151.7967281.796255e-07
1.728591.7965731.850634e-07
1.737081.7964191.905279e-07
1.745611.7962631.960193e-07
1.754181.7961062.015377e-07
1.762791.7959482.070831e-07
1.771451.7957892.126558e-07
1.780141.7956292.182558e-07
1.788881.7954682.238833e-07
1.797671.7953062.295385e-07
1.81.7952622.310400e-07
1.806491.7951422.424860e-07
1.815361.7949782.581186e-07
1.824281.7948122.738280e-07
1.833231.7946462.896145e-07
1.842241.7944783.054784e-07
1.851281.7943093.214203e-07
1.860371.7941393.374405e-07
1.869511.7939673.535393e-07
1.878681.7937953.697172e-07
1.887911.7936213.859744e-07
1.897181.7934454.023116e-07
1.906491.7932694.187289e-07
1.915851.7930914.352268e-07
1.925261.7929124.518058e-07
1.934711.7927314.684661e-07
1.944211.7925494.852082e-07
1.953761.7923655.020326e-07
1.963351.7921815.189395e-07
1.972991.7919945.359295e-07
1.982681.7918065.530029e-07
1.992411.7916175.701601e-07
21.7914695.835300e-07
2.00221.7914265.961025e-07
2.012031.7912346.523670e-07
2.021911.791047.089078e-07
2.031831.7908447.657261e-07
2.041811.7906478.228235e-07
2.051841.7904488.802012e-07
2.061911.7902489.378606e-07
2.072031.7900469.958032e-07
2.082211.7898421.054030e-06
2.092431.7896361.112543e-06
2.10271.7894291.171343e-06
2.113031.789221.230432e-06
2.12341.7890091.289811e-06
2.133831.7887961.349482e-06
2.144311.7885811.409445e-06
2.154831.7883651.469703e-06
2.165411.7881461.530257e-06
2.176051.7879261.591109e-06
2.186731.7877031.652258e-06
2.197471.7874791.713709e-06
2.21.7874261.728200e-06
2.208261.7872521.915885e-06
2.21911.7870242.162323e-06
2.231.7867932.409971e-06
2.240941.7865612.658835e-06
2.251951.7863262.908920e-06
2.2631.7860893.160234e-06
2.274121.785853.412782e-06
2.285281.7856083.666569e-06
2.29651.7853643.921603e-06
2.307781.7851184.177889e-06
2.319111.784874.435433e-06
2.33051.7846194.694242e-06
2.341941.7843664.954322e-06
2.353441.7841115.215678e-06
2.364991.7838535.478318e-06
2.37661.7835925.742247e-06
2.388271.7833296.007473e-06
2.41.7830646.274000e-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
—