# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    1) <a href="https://refractiveindex.info/download/data/2021/schott-BOROFLOAT-opticalproperties-datasheet-US_2021_06.pdf">BOROFLOAT® 33 – Optical Properties, June 2021</a>
    (obtained from <a href="https://www.schott.com/en-us/products/borofloat-p1000314/downloads/">http://www.schott.com</a>).<br>
    Refractive index: Fit of numerical data with Sellmeier equation - Mikhail Polyanskiy<br>
    Extinction coefficient: Transmission data extracted from figures and converted to k values - Mikhail Polyanskiy<br>
    2) <a href="https://refractiveindex.info/download/data/2019/BOROFLOAT_Technical_Data_OnePager_032019_US.pdf">BOROFLOAT® 33 – Technical data, March 2019</a>
    (obtained from <a href="https://www.schott.com/en-us/products/borofloat-p1000314/downloads/">http://www.schott.com</a>).
COMMENTS: |
    Room temperature.
PROPERTIES:
    nd: 1.471
    Vd: 65.41
    density:
      - value: 2230
    youngs_modulus:
      - value: 64e9
    poissons_ratio:
      - value: 0.20
    thermal_expansion:
      - temperature_range: 293 573
        value: 3.25e-06
    thermal_conductivity:
      - temperature: 363
        value: 1.2
    transformation_temperature:
      - value: 798
    resistance:
        hydrolytic: 1
        acid: 1
        alkali: 2
    hardness:
      - type: Knoop
        value: 4.71e9
DATA:
  - type: formula 1
    wavelength_range: 0.240 1.55
    coefficients: 0.3542 0.78657 0.10856 0.18285 4.427
  - type: tabulated k
    data: |
        0.250 4.374E-05
        0.252 4.098E-05
        0.254 3.857E-05
        0.256 3.619E-05
        0.258 3.366E-05
        0.260 3.134E-05
        0.262 2.898E-05
        0.264 2.642E-05
        0.266 2.410E-05
        0.268 2.185E-05
        0.270 1.971E-05
        0.272 1.766E-05
        0.274 1.574E-05
        0.276 1.396E-05
        0.278 1.228E-05
        0.280 1.079E-05
        0.282 9.479E-06
        0.284 8.330E-06
        0.286 7.289E-06
        0.288 6.380E-06
        0.290 5.552E-06
        0.292 4.798E-06
        0.294 4.138E-06
        0.296 3.576E-06
        0.298 3.101E-06
        0.300 2.682E-06
        0.302 2.420E-06
        0.304 2.094E-06
        0.306 1.813E-06
        0.308 1.565E-06
        0.310 1.345E-06
        0.312 1.157E-06
        0.314 9.978E-07
        0.316 8.610E-07
        0.318 7.443E-07
        0.320 6.407E-07
        0.322 5.500E-07
        0.324 4.727E-07
        0.326 4.078E-07
        0.328 3.521E-07
        0.330 3.049E-07
        0.332 2.647E-07
        0.334 2.292E-07
        0.336 1.982E-07
        0.338 1.718E-07
        0.340 1.497E-07
        0.342 1.308E-07
        0.344 1.146E-07
        0.346 1.008E-07
        0.348 8.942E-08
        0.350 7.998E-08
        0.352 7.192E-08
        0.354 6.491E-08
        0.356 5.871E-08
        0.358 5.319E-08
        0.360 4.836E-08
        0.362 4.440E-08
        0.364 4.159E-08
        0.366 4.003E-08
        0.368 3.973E-08
        0.370 4.086E-08
        0.372 4.376E-08
        0.374 4.781E-08
        0.376 5.117E-08
        0.378 5.252E-08
        0.380 5.201E-08
        0.382 4.803E-08
        0.384 4.312E-08
        0.386 3.736E-08
        0.388 3.193E-08
        0.390 3.143E-08
        0.392 3.237E-08
        0.394 3.260E-08
        0.396 3.254E-08
        0.398 3.293E-08
        0.400 3.356E-08
        0.410 3.017E-08
        0.420 3.080E-08
        0.430 3.154E-08
        0.440 3.227E-08
        0.450 3.280E-08
        0.460 3.291E-08
        0.470 3.235E-08
        0.480 3.098E-08
        0.490 2.891E-08
        0.500 2.621E-08
        0.510 2.303E-08
        0.520 1.984E-08
        0.530 1.718E-08
        0.540 1.506E-08
        0.550 1.333E-08
        0.560 1.199E-08
        0.570 1.124E-08
        0.580 1.131E-08
        0.590 1.189E-08
        0.600 1.254E-08
        0.610 1.323E-08
        0.620 1.400E-08
        0.630 1.494E-08
        0.640 1.622E-08
        0.650 1.795E-08
        0.660 2.012E-08
        0.670 2.259E-08
        0.680 2.528E-08
        0.690 2.815E-08
        0.700 3.117E-08
        0.710 3.434E-08
        0.720 3.765E-08
        0.730 4.112E-08
        0.740 4.477E-08
        0.750 4.859E-08
        0.760 5.260E-08
        0.770 5.684E-08
        0.780 6.132E-08
        0.790 6.611E-08
        0.800 7.113E-08
        0.810 7.581E-08
        0.820 7.912E-08
        0.830 7.953E-08
        0.840 7.700E-08
        0.850 7.348E-08
        0.860 7.111E-08
        0.870 7.067E-08
        0.880 7.245E-08
        0.890 7.588E-08
        0.900 8.028E-08
        0.910 8.513E-08
        0.920 9.006E-08
        0.930 9.469E-08
        0.940 9.876E-08
        0.950 1.024E-07
        0.960 1.060E-07
        0.970 1.095E-07
        0.980 1.129E-07
        0.990 1.161E-07
        1.000 1.191E-07
        1.010 1.215E-07
        1.020 1.235E-07
        1.030 1.252E-07
        1.040 1.267E-07
        1.050 1.283E-07
        1.060 1.299E-07
        1.070 1.313E-07
        1.080 1.325E-07
        1.090 1.334E-07
        1.100 1.339E-07
        1.110 1.342E-07
        1.120 1.346E-07
        1.130 1.350E-07
        1.140 1.353E-07
        1.150 1.355E-07
        1.160 1.354E-07
        1.170 1.349E-07
        1.180 1.343E-07
        1.190 1.336E-07
        1.200 1.329E-07
        1.210 1.324E-07
        1.220 1.319E-07
        1.230 1.312E-07
        1.240 1.302E-07
        1.250 1.285E-07
        1.260 1.258E-07
        1.270 1.223E-07
        1.280 1.184E-07
        1.290 1.147E-07
        1.300 1.114E-07
        1.310 1.090E-07
        1.320 1.111E-07
        1.330 1.256E-07
        1.340 1.409E-07
        1.350 1.486E-07
        1.360 1.824E-07
        1.370 3.948E-07
        1.380 5.832E-07
        1.390 5.985E-07
        1.400 5.102E-07
        1.410 4.127E-07
        1.420 3.390E-07
        1.430 2.748E-07
        1.440 2.272E-07
        1.450 1.940E-07
        1.460 1.669E-07
        1.470 1.463E-07
        1.480 1.335E-07
        1.490 1.287E-07
        1.500 1.283E-07
        1.510 1.285E-07
        1.520 1.286E-07
        1.530 1.287E-07
        1.540 1.289E-07
        1.550 1.294E-07
        1.560 1.303E-07
        1.570 1.317E-07
        1.580 1.330E-07
        1.590 1.335E-07
        1.600 1.332E-07
        1.610 1.325E-07
        1.620 1.316E-07
        1.630 1.308E-07
        1.640 1.303E-07
        1.650 1.301E-07
        1.660 1.303E-07
        1.670 1.308E-07
        1.680 1.314E-07
        1.690 1.321E-07
        1.700 1.329E-07
        1.710 1.336E-07
        1.720 1.342E-07
        1.730 1.348E-07
        1.740 1.353E-07
        1.750 1.358E-07
        1.760 1.363E-07
        1.770 1.368E-07
        1.780 1.375E-07
        1.790 1.383E-07
        1.800 1.394E-07
        1.810 1.408E-07
        1.820 1.427E-07
        1.830 1.454E-07
        1.840 1.491E-07
        1.850 1.543E-07
        1.860 1.610E-07
        1.870 1.689E-07
        1.880 1.781E-07
        1.890 1.890E-07
        1.900 2.024E-07
        1.910 2.197E-07
        1.920 2.427E-07
        1.930 2.729E-07
        1.940 3.105E-07
        1.950 3.537E-07
        1.960 3.986E-07
        1.970 4.413E-07
        1.980 4.782E-07
        1.990 5.055E-07
        2.000 5.170E-07
        2.010 5.152E-07
        2.020 5.033E-07
        2.030 4.897E-07
        2.040 4.943E-07
        2.050 5.172E-07
        2.060 5.522E-07
        2.070 6.013E-07
        2.080 6.614E-07
        2.090 7.416E-07
        2.100 8.673E-07
        2.110 1.076E-06
        2.120 1.314E-06
        2.130 1.527E-06
        2.140 1.687E-06
        2.150 1.796E-06
        2.160 1.879E-06
        2.170 1.995E-06
        2.180 2.222E-06
        2.190 2.642E-06
        2.200 2.962E-06
        2.210 2.927E-06
        2.220 2.752E-06
        2.230 2.563E-06
        2.240 2.428E-06
        2.250 2.338E-06
        2.260 2.285E-06
        2.270 2.262E-06
        2.280 2.263E-06
        2.290 2.293E-06
        2.300 2.349E-06
        2.310 2.454E-06
        2.320 2.603E-06
        2.330 2.816E-06
        2.340 3.077E-06
        2.350 3.403E-06
        2.360 3.796E-06
        2.370 4.310E-06
        2.380 4.961E-06
        2.390 5.352E-06
        2.400 5.534E-06
        2.410 5.609E-06
        2.420 5.698E-06
        2.430 5.857E-06
        2.440 6.067E-06
        2.450 6.320E-06
        2.460 6.579E-06
        2.470 6.856E-06
        2.480 7.146E-06
        2.490 7.442E-06
        2.500 7.754E-06
        2.510 8.084E-06
        2.520 8.423E-06
        2.530 8.752E-06
        2.540 9.022E-06
        2.550 9.218E-06
        2.560 9.369E-06
        2.570 9.482E-06
        2.580 9.570E-06
        2.590 9.649E-06
        2.600 9.725E-06
        2.610 9.815E-06
        2.620 9.935E-06
        2.630 1.010E-05
        2.640 1.043E-05
        2.650 1.151E-05
        2.660 1.381E-05
        2.670 1.729E-05
        2.680 2.224E-05
        2.690 4.332E-05
        2.700 6.797E-05
        2.710 9.810E-05
        2.720 1.378E-04
        2.730 1.726E-04
        2.740 1.958E-04
        2.750 2.078E-04
        2.760 2.107E-04
        2.770 2.077E-04
        2.780 2.019E-04
        2.790 1.950E-04
        2.800 1.865E-04