Optical constants

Refractive index of L-LAH85V (OHARA)

L-LAH85V: n,k 0.365–2.325 µm

Data
formula 2 + tabulated k
Range
0.365–2.325 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.365–2.325 µm
Refractive index n
1.854
Extinction coefficient k
4.67830e-09
Permittivity ε1
3.4373
Permittivity ε2
1.73471e-08
Absorption coefficient α
0.0010005 cm⁻¹
Penetration depth δ = λ/(2πk)
1.99901e+10 nm
Abbe number Vd
40.378
Chromatic dispersion dn/dλ
-0.107925 µm⁻¹
Group index ng
1.91741
Group velocity dispersion
203.865 fs²/mm
Dispersion parameter D
-1112.19 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

# L-LAH85V (OHARA): L-LAH85V
ohara_l_lah85v = ls.fetch_refractiveindex("specs", "OHARA-optical", "L-LAH85V", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_l_lah85v.range_nm)  # (365, 2325) nm
eps = ohara_l_lah85v.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=1.97460503λ2λ2−0.0101854258+0.361903592λ2λ2−0.0384829118+1.38433241λ2λ2−103.713627

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C21.97460503
C30.0101854258
C40.361903592
C50.0384829118
C61.38433241
C7103.713627

Comments and conditions

Low Softening Temperature

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 5.8e-06 1.01e-08 -1.47e-11 7.72e-07 7.64e-10 0.232
nd
1.854000
Vd
40.378368
density
value: 5250
thermal expansion
value: 6.3e-06, temperature range: 243 343
dPgF
-0.0073
resistance
acid: 3.2; climatic: 4.0; phosphate: 1.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 5.25e-06 K⁻¹ at 633 nm, dn/dT = 4.00e-06 K⁻¹ at 1310 nm, dn/dT = 3.90e-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 422 wavelengths, the same grid as the API and the library
L-LAH85V (OHARA), L-LAH85V: n and k versus wavelength
λ (µm)nk
0.3651.9092381.165025e-06
0.3666981.9083071.030743e-06
0.3684031.9073898.958356e-07
0.371.9065447.695500e-07
0.3701171.9064837.658845e-07
0.3718381.9055897.119195e-07
0.3735681.9047066.577035e-07
0.3753061.9038356.032353e-07
0.3770511.9029755.485138e-07
0.3788051.9021274.935377e-07
0.381.9015574.560800e-07
0.3805671.9012894.458517e-07
0.3823371.9004634.139201e-07
0.3841161.8996463.818400e-07
0.3859021.898843.496106e-07
0.3876971.8980453.172314e-07
0.38951.8972592.847015e-07
0.391.8970442.756900e-07
0.3913121.8964832.635855e-07
0.3931321.8957172.467949e-07
0.3949611.8949612.299262e-07
0.3967981.8942142.129790e-07
0.3986441.8934761.959530e-07
0.41.8929411.834400e-07
0.4004981.8927471.813223e-07
0.4023611.8920271.733977e-07
0.4042321.8913161.654362e-07
0.4061121.8906141.574376e-07
0.4080011.889921.494019e-07
0.4098991.8892351.413288e-07
0.4118061.8885571.332181e-07
0.4137211.8878881.250697e-07
0.4156451.8872271.168834e-07
0.4175791.8865741.086590e-07
0.4195211.8859291.003964e-07
0.421.8857719.835900e-08
0.4214721.8852919.606265e-08
0.4234331.8846619.300520e-08
0.4254021.8840388.993353e-08
0.4273811.8834238.684757e-08
0.4293691.8828148.374725e-08
0.4313661.8822138.063252e-08
0.4333721.8816197.750330e-08
0.4353881.8810327.435952e-08
0.4374131.8804517.120112e-08
0.4394481.8798776.802803e-08
0.441.8797236.716700e-08
0.4414921.879316.572967e-08
0.4435451.8787496.375130e-08
0.4456091.8781956.176374e-08
0.4476811.8776465.976692e-08
0.4497641.8771055.776082e-08
0.4518561.8765695.574539e-08
0.4539571.8760395.372059e-08
0.4560691.8755155.168636e-08
0.458191.8749974.964268e-08
0.461.8745624.789900e-08
0.4603211.8744854.762242e-08
0.4624621.8739794.577914e-08
0.4646131.8734784.392728e-08
0.4667751.8729834.206682e-08
0.4689461.8724934.019770e-08
0.4711271.8720083.831989e-08
0.4733181.8715293.643334e-08
0.475521.8710553.453802e-08
0.4777321.8705873.263388e-08
0.4799541.8701233.072088e-08
0.481.8701143.068100e-08
0.4821861.8696652.950739e-08
0.4844291.8692112.830334e-08
0.4866821.8687622.709369e-08
0.4889461.8683182.587841e-08
0.491221.8678792.465748e-08
0.4935051.8674452.343087e-08
0.49581.8670152.219856e-08
0.4981071.866592.096051e-08
0.51.8662461.994400e-08
0.5004231.8661691.981220e-08
0.5027511.8657531.908761e-08
0.5050891.8653411.835965e-08
0.5074391.8649341.762830e-08
0.5097991.8645311.689355e-08
0.512171.8641321.615538e-08
0.5145531.8637371.541378e-08
0.5169461.8633461.466873e-08
0.519351.862961.392021e-08
0.5217661.8625771.316821e-08
0.5241931.8621981.241271e-08
0.5266311.8618241.165370e-08
0.5290811.8614531.089116e-08
0.5315421.8610861.012508e-08
0.5340141.8607229.355426e-09
0.5364981.8603638.582196e-09
0.5389931.8600077.805369e-09
0.54151.8596547.024929e-09
0.5440191.8593066.240858e-09
0.5465491.858965.453141e-09
0.5490921.8586184.661759e-09
0.551.8584984.379000e-09
0.5516461.858284.392100e-09
0.5542121.8579454.412524e-09
0.5567891.8576144.433044e-09
0.5593791.8572854.453658e-09
0.5619811.856964.474369e-09
0.5645951.8566384.495176e-09
0.5672211.856324.516080e-09
0.5698591.8560044.537081e-09
0.572511.8556924.558180e-09
0.5751731.8553824.579377e-09
0.5778481.8550764.600673e-09
0.5805361.8547734.622067e-09
0.5832361.8544724.643561e-09
0.5859491.8541754.665156e-09
0.5886751.853884.686850e-09
0.5914131.8535894.708645e-09
0.5941641.85334.730542e-09
0.5969271.8530134.752541e-09
0.5997041.852734.774642e-09
0.61.85274.777000e-09
0.6024931.8524494.796851e-09
0.6052961.8521714.819163e-09
0.6081111.8518964.841580e-09
0.610941.8516234.864101e-09
0.6137811.8513534.886726e-09
0.6166361.8510854.909457e-09
0.6195041.850824.932293e-09
0.6223861.8505574.955236e-09
0.6252811.8502974.978285e-09
0.6281891.8500395.001442e-09
0.6311111.8497835.024706e-09
0.6340471.849535.048079e-09
0.6369961.8492795.071560e-09
0.6399591.8490315.095150e-09
0.6429351.8487845.118850e-09
0.6459261.848545.142661e-09
0.648931.8482985.166582e-09
0.651.8482135.175100e-09
0.6519491.8480595.190614e-09
0.6549811.8478215.214758e-09
0.6580281.8475865.239015e-09
0.6610881.8473535.263384e-09
0.6641631.8471225.287867e-09
0.6672521.8468925.312464e-09
0.6703561.8466655.337174e-09
0.6734741.846445.362000e-09
0.6766071.8462175.386942e-09
0.6797541.8459965.411999e-09
0.6829151.8457775.437173e-09
0.6860921.8455595.462464e-09
0.6892831.8453445.487873e-09
0.6924891.845135.513400e-09
0.695711.8449185.539045e-09
0.6989461.8447085.564810e-09
0.71.8446415.573200e-09
0.7021971.84455.590695e-09
0.7054631.8442945.616700e-09
0.7087451.8440895.642826e-09
0.7120411.8438865.669073e-09
0.7153531.8436855.695443e-09
0.7186811.8434855.721935e-09
0.7220231.8432875.748551e-09
0.7253821.8430915.775290e-09
0.7287561.8428965.802154e-09
0.7321461.8427035.829143e-09
0.7355511.8425125.856257e-09
0.7389721.8423225.883497e-09
0.7424091.8421335.910864e-09
0.7458631.8419465.938358e-09
0.7493321.8417615.965981e-09
0.7528171.8415775.993731e-09
0.7563191.8413946.021611e-09
0.7598371.8412136.049621e-09
0.7633711.8410336.077760e-09
0.7669221.8408556.106031e-09
0.7704891.8406786.134433e-09
0.7740731.8405026.162967e-09
0.7776731.8403286.191634e-09
0.781291.8401556.220434e-09
0.7849241.8399846.249369e-09
0.7885751.8398136.278437e-09
0.7922431.8396446.307641e-09
0.7959281.8394766.336981e-09
0.799631.839316.366458e-09
0.81.8392936.369400e-09
0.803351.8391446.396071e-09
0.8070861.838986.425822e-09
0.810841.8388176.455712e-09
0.8146121.8386566.485740e-09
0.8184011.8384956.515909e-09
0.8222081.8383356.546217e-09
0.8260321.8381776.576667e-09
0.8298741.838026.607258e-09
0.8337341.8378636.637991e-09
0.8376121.8377086.668868e-09
0.8415081.8375546.699888e-09
0.8454221.8374016.731052e-09
0.8493551.8372496.762361e-09
0.8533051.8370986.793816e-09
0.8572741.8369486.825418e-09
0.8612621.8367996.857166e-09
0.8652681.8366516.889062e-09
0.8692921.8365046.921106e-09
0.8733361.8363586.953299e-09
0.8773981.8362126.985642e-09
0.8814791.8360687.018136e-09
0.8855791.8359247.050780e-09
0.8896981.8357827.083577e-09
0.8938361.835647.116526e-09
0.8979941.8354997.149628e-09
0.91.8354327.165600e-09
0.9021711.8353597.182882e-09
0.9063671.835227.216289e-09
0.9105831.8350817.249851e-09
0.9148181.8349447.283569e-09
0.9190731.8348077.317444e-09
0.9233481.8346717.351476e-09
0.9276431.8345367.385667e-09
0.9319581.8344017.420017e-09
0.9362931.8342677.454527e-09
0.9406481.8341347.489197e-09
0.9450231.8340027.524029e-09
0.9494191.833877.559022e-09
0.9538351.8337397.594178e-09
0.9582711.8336087.629498e-09
0.9627291.8334797.664982e-09
0.9672071.833357.700631e-09
0.9717051.8332217.736446e-09
0.9762251.8330937.772428e-09
0.9807661.8329667.808577e-09
0.9853281.8328397.844894e-09
0.9899111.8327137.881380e-09
0.9945151.8325887.918035e-09
0.9991411.8324637.954861e-09
11.832447.961700e-09
1.003791.8323387.991863e-09
1.008461.8322148.029037e-09
1.013151.8320918.066384e-09
1.017861.8319688.103905e-09
1.022591.8318468.141600e-09
1.027351.8317248.179471e-09
1.032131.8316028.217518e-09
1.036931.8314818.255741e-09
1.041751.8313618.294143e-09
1.04661.8312418.332723e-09
1.051471.8311218.371483e-09
1.056361.8310028.410423e-09
1.061271.8308838.449544e-09
1.066211.8307658.488847e-09
1.071171.8306478.528333e-09
1.076151.8305298.568002e-09
1.081151.8304128.607856e-09
1.086181.8302958.647895e-09
1.091241.8301788.688121e-09
1.096311.8300628.728534e-09
1.101411.8299468.769134e-09
1.106531.829838.809924e-09
1.111681.8297158.850903e-09
1.116851.8295998.892073e-09
1.122051.8294858.933434e-09
1.127271.829378.974988e-09
1.132511.8292569.016735e-09
1.137781.8291429.058676e-09
1.143071.8290289.100813e-09
1.148391.8289149.143145e-09
1.153731.8288019.185674e-09
1.159091.8286879.228401e-09
1.164481.8285749.271327e-09
1.16991.8284619.314452e-09
1.175341.8283499.357778e-09
1.180811.8282369.401306e-09
1.18631.8281249.445036e-09
1.191821.8280119.488969e-09
1.197361.8278999.533107e-09
1.21.8278469.554100e-09
1.202931.8277879.577443e-09
1.208531.8276759.621978e-09
1.214151.8275639.666720e-09
1.21981.8274519.711671e-09
1.225471.827349.756831e-09
1.231171.8272289.802200e-09
1.23691.8271169.847781e-09
1.242651.8270059.893574e-09
1.248431.8268939.939579e-09
1.254241.8267829.985799e-09
1.260071.826671.003223e-08
1.265931.8265591.007888e-08
1.271821.8264471.012575e-08
1.277741.8263361.017284e-08
1.283681.8262241.022014e-08
1.289651.8261121.026767e-08
1.295651.8260011.031541e-08
1.301671.8258891.036338e-08
1.307731.8257771.041157e-08
1.313811.8256651.045999e-08
1.319921.8255531.050863e-08
1.326061.8254411.055749e-08
1.332231.8253291.060659e-08
1.338431.8252161.065591e-08
1.344651.8251041.070546e-08
1.350911.8249911.075524e-08
1.357191.8248781.080526e-08
1.36351.8247651.085550e-08
1.369851.8246521.090598e-08
1.376221.8245381.095670e-08
1.382621.8244251.100765e-08
1.389051.8243111.105884e-08
1.395511.8241971.111026e-08
1.41.8241181.114600e-08
1.4021.8240831.128951e-08
1.408521.8239681.175721e-08
1.415071.8238531.222708e-08
1.421661.8237381.269914e-08
1.428271.8236231.317340e-08
1.434911.8235071.364986e-08
1.441591.8233911.412854e-08
1.448291.8232751.460944e-08
1.455031.8231591.509258e-08
1.46181.8230421.557797e-08
1.468591.8229241.606561e-08
1.475431.8228071.655553e-08
1.482291.8226891.704772e-08
1.489181.822571.754220e-08
1.496111.8224521.803898e-08
1.503071.8223331.853807e-08
1.510061.8222131.903949e-08
1.517081.8220931.954323e-08
1.524141.8219732.004932e-08
1.531231.8218522.055777e-08
1.538351.821732.106857e-08
1.545511.8216082.158176e-08
1.55271.8214862.209733e-08
1.559921.8213632.261530e-08
1.567171.821242.313568e-08
1.574461.8211162.365847e-08
1.581791.8209922.418370e-08
1.589141.8208672.471138e-08
1.596541.8207412.524151e-08
1.61.8206832.549000e-08
1.603961.8206152.726384e-08
1.611421.8204893.060467e-08
1.618921.8203613.396105e-08
1.626451.8202343.733304e-08
1.634011.8201054.072071e-08
1.641611.8199764.412413e-08
1.649251.8198464.754339e-08
1.656921.8197165.097856e-08
1.664631.8195855.442970e-08
1.672371.8194535.789689e-08
1.680151.8193216.138021e-08
1.687961.8191876.487973e-08
1.695811.8190546.839553e-08
1.70371.8189197.192769e-08
1.711631.8187847.547627e-08
1.719591.8186477.904136e-08
1.727591.8185118.262303e-08
1.735621.8183738.622136e-08
1.743691.8182348.983642e-08
1.751811.8180959.346830e-08
1.759951.8179559.711708e-08
1.768141.8178141.007828e-07
1.776361.8176721.044656e-07
1.784631.8175291.081655e-07
1.792931.8173861.118827e-07
1.81.8172631.150500e-07
1.801271.8172411.170800e-07
1.809641.8170961.305095e-07
1.818061.8169491.440015e-07
1.826521.8168021.575563e-07
1.835011.8166541.711741e-07
1.843551.8165041.848553e-07
1.852121.8163541.986001e-07
1.860741.8162032.124088e-07
1.869391.816052.262818e-07
1.878091.8158972.402193e-07
1.886821.8157422.542216e-07
1.89561.8155872.682890e-07
1.904421.815432.824219e-07
1.913281.8152732.966205e-07
1.922181.8151143.108852e-07
1.931121.8149543.252162e-07
1.94011.8147933.396139e-07
1.949121.814633.540785e-07
1.958191.8144673.686104e-07
1.96731.8143023.832099e-07
1.976451.8141363.978773e-07
1.985641.8139694.126129e-07
1.994881.8138014.274171e-07
21.8137074.356300e-07
2.004161.8136314.518030e-07
2.013481.813464.880874e-07
2.022841.8132875.245406e-07
2.032251.8131145.611634e-07
2.04171.8129395.979565e-07
2.05121.8127626.349207e-07
2.060741.8125856.720569e-07
2.070331.8124057.093658e-07
2.079961.8122257.468483e-07
2.089631.8120437.845051e-07
2.099351.8118598.223370e-07
2.109121.8116748.603449e-07
2.118931.8114878.985296e-07
2.128781.8112999.368919e-07
2.138681.811119.754327e-07
2.148631.8109181.014153e-06
2.158621.8107251.053053e-06
2.168671.8105311.092134e-06
2.178751.8103351.131397e-06
2.188891.8101371.170842e-06
2.199071.8099381.210471e-06
2.21.8099191.214100e-06
2.20931.8097371.389688e-06
2.219571.8095341.583784e-06
2.22991.8093291.778783e-06
2.240271.8091231.974689e-06
2.250691.8089142.171506e-06
2.261161.8087042.369239e-06
2.271671.8084932.567892e-06
2.282241.8082792.767468e-06
2.292861.8080632.967973e-06
2.303521.8078463.169410e-06
2.314241.8076263.371784e-06
2.3251.8074053.575100e-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
—