Optical constants

Refractive index of S-LAH52Q (OHARA)

S-LAH52Q: 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
1.79952
Extinction coefficient k
8.27428e-09
Permittivity ε1
3.23826
Permittivity ε2
2.97794e-08
Absorption coefficient α
0.00176953 cm⁻¹
Penetration depth δ = λ/(2πk)
1.13024e+10 nm
Abbe number Vd
42.24
Chromatic dispersion dn/dλ
-0.0966566 µm⁻¹
Group index ng
1.85631
Group velocity dispersion
181.767 fs²/mm
Dispersion parameter D
-991.633 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-LAH52Q (OHARA): S-LAH52Q
ohara_s_lah52q = ls.fetch_refractiveindex("specs", "OHARA-optical", "S-LAH52Q", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_s_lah52q.range_nm)  # (365.015, 2325.42) nm
eps = ohara_s_lah52q.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=1.91082318λ2λ2−0.0103565352+0.239854589λ2λ2−0.0413805081+1.16159733λ2λ2−96.60373

Valid from 0.365015 to 2.32542 µm.

Coefficients as stored
CiValue
C10.0
C21.91082318
C30.0103565352
C40.239854589
C50.0413805081
C61.16159733
C796.60373

Comments and conditions

Recommended

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 1.08e-05 1.21e-08 -1.6e-11 8.62e-07 8.63e-10 0.222
nd
1.799520
Vd
42.239506
density
value: 4470
thermal expansion
value: 6e-06, temperature range: 243 343
dPgF
-0.0056
resistance
acid: 52.2; climatic: 2.0; phosphate: 2.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 8.21e-06 K⁻¹ at 633 nm, dn/dT = 6.85e-06 K⁻¹ at 1310 nm, dn/dT = 6.73e-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
S-LAH52Q (OHARA), S-LAH52Q: n and k versus wavelength
λ (µm)nk
0.3650151.8488316.721438e-07
0.3667131.8480015.944633e-07
0.3684191.8471815.164215e-07
0.371.8464354.440800e-07
0.3701331.8463734.412756e-07
0.3718541.8455764.048436e-07
0.3735841.8447893.682422e-07
0.3753221.8440123.314704e-07
0.3770681.8432452.945277e-07
0.3788221.8424882.574131e-07
0.381.8419872.324800e-07
0.3805841.8417412.274397e-07
0.3823541.8410042.121562e-07
0.3841331.8402761.968016e-07
0.385921.8395571.813756e-07
0.3877151.8388481.658779e-07
0.3895181.8381471.503080e-07
0.391.8379621.461500e-07
0.391331.8374551.400427e-07
0.3931511.8367721.316855e-07
0.3949791.8360971.232894e-07
0.3968171.8354311.148543e-07
0.3986631.8347731.063800e-07
0.41.8343031.002400e-07
0.4005171.8341239.921800e-08
0.402381.8334819.553553e-08
0.4042521.8328479.183594e-08
0.4061321.8322218.811913e-08
0.4080221.8316028.438504e-08
0.409921.830998.063357e-08
0.4118261.8303867.686466e-08
0.4137421.829797.307821e-08
0.4156671.82926.927415e-08
0.41761.8286176.545239e-08
0.4195431.8280426.161286e-08
0.421.8279076.070900e-08
0.4214941.8274735.933142e-08
0.4234551.826915.752389e-08
0.4254251.8263555.570795e-08
0.4274041.8258065.388356e-08
0.4293921.8252635.205069e-08
0.4313891.8247275.020929e-08
0.4333961.8241964.835933e-08
0.4354121.8236724.650076e-08
0.4374371.8231544.463355e-08
0.4394721.8226424.275765e-08
0.441.8225114.227100e-08
0.4415161.8221364.129527e-08
0.443571.8216353.997375e-08
0.4456341.821143.864609e-08
0.4477061.8206513.731226e-08
0.4497891.8201683.597221e-08
0.4518811.8196893.462594e-08
0.4539831.8192163.327340e-08
0.4560951.8187493.191457e-08
0.4582171.8182863.054942e-08
0.461.8179032.940200e-08
0.4603481.8178292.922342e-08
0.462491.8173772.812532e-08
0.4646411.816932.702210e-08
0.4668021.8164882.591375e-08
0.4689741.816052.480025e-08
0.4711551.8156182.368157e-08
0.4733471.815192.255769e-08
0.4755491.8147672.142857e-08
0.4777611.8143482.029421e-08
0.4799831.8139341.915456e-08
0.481.8139311.914600e-08
0.4822161.8135241.834923e-08
0.4844591.8131191.754271e-08
0.4867131.8127181.673245e-08
0.4889771.8123221.591842e-08
0.4912511.8119291.510060e-08
0.4935361.8115411.427897e-08
0.4958321.8111571.345353e-08
0.4981391.8107771.262424e-08
0.51.8104751.195500e-08
0.5004561.8104011.188593e-08
0.5027841.8100291.153320e-08
0.5051231.8096611.117882e-08
0.5074721.8092971.082280e-08
0.5098331.8089371.046512e-08
0.5122041.808581.010578e-08
0.5145871.8082279.744769e-09
0.5169811.8078789.382076e-09
0.5193861.8075329.017696e-09
0.5218021.807198.651622e-09
0.5242291.8068518.283844e-09
0.5266671.8065167.914355e-09
0.5291171.8061857.543148e-09
0.5315791.8058567.170214e-09
0.5340511.8055316.795546e-09
0.5365361.805216.419134e-09
0.5390311.8048916.040972e-09
0.5415391.8045765.661050e-09
0.5440581.8042645.279361e-09
0.5465891.8039554.895897e-09
0.5491311.803654.510649e-09
0.551.8035464.379000e-09
0.5516861.8033474.553618e-09
0.5542521.8030474.819477e-09
0.556831.802755.086574e-09
0.559421.8024575.354913e-09
0.5620221.8021665.624501e-09
0.5646371.8018785.895342e-09
0.5672631.8015926.167443e-09
0.5699021.801316.440810e-09
0.5725531.801036.715449e-09
0.5752161.8007536.991365e-09
0.5778921.8004797.268564e-09
0.580581.8002087.547054e-09
0.5832811.7999397.826838e-09
0.5859941.7996728.107924e-09
0.588721.7994098.390317e-09
0.5914591.7991478.674024e-09
0.594211.7988888.959051e-09
0.5969741.7986329.245404e-09
0.5997511.7983789.533089e-09
0.61.7983569.558900e-09
0.6025411.7981279.336142e-09
0.6053441.7978789.090401e-09
0.6081591.7976318.843517e-09
0.6109881.7973868.595485e-09
0.613831.7971448.346299e-09
0.6166861.7969048.095954e-09
0.6195541.7966677.844444e-09
0.6224361.7964317.591764e-09
0.6253321.7961987.337909e-09
0.6282411.7959677.082874e-09
0.6311631.7957386.826651e-09
0.6340991.7955116.569237e-09
0.6370491.7952866.310626e-09
0.6400121.7950636.050811e-09
0.6429891.7948425.789788e-09
0.645981.7946235.527551e-09
0.6489851.7944065.264094e-09
0.651.7943345.175100e-09
0.6520041.7941915.191055e-09
0.6550371.7939785.215203e-09
0.6580841.7937675.239463e-09
0.6611451.7935585.263836e-09
0.664221.7933515.288323e-09
0.667311.7931455.312923e-09
0.6704141.7929415.337638e-09
0.6735331.7927395.362468e-09
0.6766661.7925395.387414e-09
0.6798141.7923415.412475e-09
0.6829761.7921445.437653e-09
0.6861531.7919495.462948e-09
0.6893451.7917555.488361e-09
0.6925511.7915645.513892e-09
0.6957731.7913745.539542e-09
0.6990091.7911855.565311e-09
0.71.7911285.573200e-09
0.7022611.7909985.591200e-09
0.7055271.7908135.617210e-09
0.7088091.7906295.643340e-09
0.7121061.7904475.669592e-09
0.7154191.7902665.695966e-09
0.7187471.7900865.722463e-09
0.722091.7899095.749083e-09
0.7254491.7897325.775827e-09
0.7288241.7895575.802695e-09
0.7322141.7893845.829688e-09
0.735621.7892125.856807e-09
0.7390421.7890415.884052e-09
0.742481.7888725.911423e-09
0.7459331.7887035.938922e-09
0.7494031.7885375.966549e-09
0.7528891.7883715.994305e-09
0.7563921.7882076.022189e-09
0.759911.7880446.050203e-09
0.7634451.7878836.078348e-09
0.7669961.7877226.106623e-09
0.7705641.7875636.135030e-09
0.7741481.7874056.163570e-09
0.777751.7872496.192242e-09
0.7813671.7870936.221047e-09
0.7850021.7869396.249986e-09
0.7886541.7867856.279060e-09
0.7923221.7866336.308269e-09
0.7960081.7864826.337614e-09
0.7997111.7863326.367096e-09
0.81.786326.369400e-09
0.8034311.7861836.396714e-09
0.8071681.7860356.426471e-09
0.8109231.7858896.456365e-09
0.8146951.7857436.486399e-09
0.8184841.7855986.516573e-09
0.8222921.7854556.546887e-09
0.8261171.7853126.577342e-09
0.829961.785176.607938e-09
0.833821.785036.638677e-09
0.8376991.784896.669559e-09
0.8415961.7847516.700585e-09
0.8455111.7846136.731755e-09
0.8494441.7844766.763070e-09
0.8533951.784346.794530e-09
0.8573651.7842046.826137e-09
0.8613531.784076.857891e-09
0.865361.7839376.889793e-09
0.8693851.7838046.921843e-09
0.8734291.7836726.954042e-09
0.8774921.7835416.986391e-09
0.8815741.7834117.018890e-09
0.8856751.7832817.051541e-09
0.8897941.7831537.084343e-09
0.8939331.7830257.117298e-09
0.8980921.7828977.150407e-09
0.91.782847.165600e-09
0.9022691.7827717.183667e-09
0.9064661.7826457.217080e-09
0.9106831.782527.250648e-09
0.9149191.7823967.284372e-09
0.9191751.7822727.318254e-09
0.9234511.7821497.352293e-09
0.9277471.7820277.386490e-09
0.9320621.7819067.420846e-09
0.9363981.7817857.455362e-09
0.9407541.7816647.490039e-09
0.945131.7815457.524877e-09
0.9495261.7814267.559877e-09
0.9539431.7813077.595040e-09
0.958381.7811897.630367e-09
0.9628391.7810727.665857e-09
0.9673171.7809557.701513e-09
0.9718171.7808397.737335e-09
0.9763381.7807237.773323e-09
0.9808791.7806087.809479e-09
0.9854421.7804937.845803e-09
0.9900261.7803797.882296e-09
0.9946311.7802657.918959e-09
0.9992581.7801527.955792e-09
11.7801347.961700e-09
1.003911.780047.992800e-09
1.008581.7799278.029982e-09
1.013271.7798168.067336e-09
1.017981.7797048.104864e-09
1.022721.7795938.142567e-09
1.027471.7794838.180445e-09
1.032251.7793738.218499e-09
1.037051.7792638.256730e-09
1.041881.7791548.295139e-09
1.046731.7790458.333727e-09
1.051591.7789378.372494e-09
1.056491.7788288.411442e-09
1.06141.7787218.450571e-09
1.066341.7786138.489881e-09
1.07131.7785068.529375e-09
1.076281.7783998.569052e-09
1.081291.7782938.608914e-09
1.086321.7781868.648962e-09
1.091371.778088.689195e-09
1.096451.7779758.729616e-09
1.101551.7778698.770225e-09
1.106671.7777648.811022e-09
1.111821.7776598.852010e-09
1.116991.7775558.893188e-09
1.122191.777458.934558e-09
1.127411.7773468.976120e-09
1.132651.7772429.017875e-09
1.137921.7771389.059825e-09
1.143211.7770359.101970e-09
1.148531.7769319.144311e-09
1.153871.7768289.186848e-09
1.159241.7767259.229584e-09
1.164631.7766229.272519e-09
1.170051.7765199.315653e-09
1.175491.7764179.358988e-09
1.180961.7763149.402524e-09
1.186461.7762129.446263e-09
1.191981.7761099.490205e-09
1.197521.7760079.534352e-09
1.21.7759629.554100e-09
1.203091.7759059.923674e-09
1.208691.7758031.059297e-08
1.214311.7757011.126538e-08
1.219961.7755991.194092e-08
1.225631.7754971.261960e-08
1.231331.7753951.330144e-08
1.237061.7752931.398645e-08
1.242821.7751911.467465e-08
1.24861.775091.536605e-08
1.254411.7749881.606066e-08
1.260241.7748861.675851e-08
1.26611.7747841.745960e-08
1.271991.7746821.816395e-08
1.277911.774581.887158e-08
1.283851.7744781.958250e-08
1.289831.7743762.029673e-08
1.295831.7742742.101428e-08
1.301851.7741722.173516e-08
1.307911.774072.245941e-08
1.313991.7739672.318702e-08
1.320111.7738652.391801e-08
1.326251.7737622.465240e-08
1.332421.7736592.539022e-08
1.338611.7735562.613146e-08
1.344841.7734532.687615e-08
1.35111.773352.762431e-08
1.357381.7732472.837594e-08
1.363691.7731432.913107e-08
1.370041.773042.988972e-08
1.376411.7729363.065189e-08
1.382811.7728323.141761e-08
1.389251.7727273.218689e-08
1.395711.7726233.295975e-08
1.41.7725533.347300e-08
1.40221.7725183.366622e-08
1.408721.7724133.423887e-08
1.415281.7723083.481419e-08
1.421861.7722023.539218e-08
1.428471.7720963.597286e-08
1.435121.771993.655624e-08
1.441791.7718843.714233e-08
1.44851.7717773.773115e-08
1.455241.771673.832271e-08
1.462011.7715623.891702e-08
1.468811.7714553.951410e-08
1.475641.7713474.011395e-08
1.482511.7712384.071660e-08
1.48941.7711294.132204e-08
1.496331.771024.193031e-08
1.503291.7709114.254140e-08
1.510281.7708014.315533e-08
1.517311.770694.377213e-08
1.524371.7705794.439179e-08
1.531461.7704684.501433e-08
1.538581.7703574.563977e-08
1.545741.7702444.626812e-08
1.552931.7701324.689939e-08
1.560151.7700194.753359e-08
1.567411.7699054.817075e-08
1.57471.7697914.881087e-08
1.582031.7696764.945397e-08
1.589391.7695615.010006e-08
1.596781.7694465.074916e-08
1.61.7693955.103200e-08
1.604211.769335.329084e-08
1.611671.7692135.729837e-08
1.619171.7690966.132454e-08
1.62671.7689786.536944e-08
1.634261.7688596.943316e-08
1.641871.768747.351578e-08
1.64951.768627.761739e-08
1.657181.76858.173808e-08
1.664891.7683798.587793e-08
1.672631.7682589.003705e-08
1.680411.7681359.421551e-08
1.688231.7680129.841341e-08
1.696081.7678891.026308e-07
1.703971.7677641.068679e-07
1.71191.7676391.111246e-07
1.719861.7675141.154012e-07
1.727861.7673871.196976e-07
1.73591.767261.240141e-07
1.743971.7671321.283506e-07
1.752081.7670031.327073e-07
1.760231.7668731.370842e-07
1.768421.7667431.414815e-07
1.776651.7666121.458993e-07
1.784911.766481.503376e-07
1.793221.7663471.547966e-07
1.81.7662381.584400e-07
1.801561.7662131.613646e-07
1.809941.7660791.771040e-07
1.818361.7659431.929166e-07
1.826821.7658072.088028e-07
1.835311.7656692.247629e-07
1.843851.7655312.407972e-07
1.852431.7653922.569061e-07
1.861041.7652522.730899e-07
1.86971.7651112.893490e-07
1.87841.7649693.056838e-07
1.887141.7648263.220945e-07
1.895911.7646823.385816e-07
1.904731.7645363.551454e-07
1.913591.764393.717862e-07
1.92251.7642433.885044e-07
1.931441.7640954.053004e-07
1.940421.7639454.221745e-07
1.949451.7637954.391271e-07
1.958521.7636434.561586e-07
1.967631.763494.732693e-07
1.976781.7633364.904595e-07
1.985981.7631815.077298e-07
1.995211.7630255.250804e-07
21.7629445.340700e-07
2.004491.7628675.531663e-07
2.013821.7627095.927819e-07
2.023191.7625496.325817e-07
2.03261.7623876.725667e-07
2.042051.7622257.127377e-07
2.051551.7620617.530955e-07
2.061091.7618967.936411e-07
2.070681.7617298.343752e-07
2.080311.7615618.752989e-07
2.089991.7613929.164129e-07
2.099711.7612229.577182e-07
2.109481.761059.992156e-07
2.119291.7608761.040906e-06
2.129151.7607011.082790e-06
2.139061.7605251.124870e-06
2.149011.7603471.167145e-06
2.1591.7601681.209616e-06
2.169051.7599871.252285e-06
2.179141.7598041.295153e-06
2.189271.759621.338220e-06
2.199461.7594351.381487e-06
2.21.7594251.383800e-06
2.209691.7592481.582889e-06
2.219971.7590591.794143e-06
2.230291.7588682.006380e-06
2.240671.7586762.219604e-06
2.251091.7584822.433820e-06
2.261561.7582872.649033e-06
2.272081.758092.865246e-06
2.282651.757893.082466e-06
2.293271.757693.300696e-06
2.303941.7574873.519940e-06
2.314651.7572823.740205e-06
2.325421.7570763.961495e-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
—