# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
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REFERENCES: |
    <a href="https://refractiveindex.info/download/data/2022/CDGM-ZEMAX202206new.AGF">CDGM Zemax catalog 2022-06</a> (obtained from <a href="http://www.cdgmgd.com/go.htm?k=Download&url=downList">http://www.cdgmgd.com</a>)<br>See also <a href="https://refractiveindex.info/download/data/2022/CDGM202206.pdf">CDGM optical glass data sheets</a>
DATA:
  - type: formula 2
    wavelength_range: 0.4047 2.325
    coefficients: 0 0.494167183 0.0602358038 2.31375143 0.0137149187 2.2792987 148.088436
  - type: tabulated k
    data: |
        0.370 9.9561E-06
        0.380 4.6202E-06
        0.390 2.5977E-06
        0.400 1.7175E-06
        0.420 9.1284E-07
        0.440 5.4442E-07
        0.460 3.5328E-07
        0.480 2.6081E-07
        0.500 1.8320E-07
        0.550 7.9499E-08
        0.600 4.7987E-08
        0.650 3.6335E-08
        0.700 2.2326E-08
        0.800 1.2745E-08
        0.850 1.3542E-08
        0.900 1.4338E-08
        0.950 1.5135E-08
        1.000 1.5931E-08
        1.060 1.6887E-08
        1.200 1.9118E-08
        1.400 2.2304E-08
        1.600 2.5490E-08
        1.800 7.1799E-08
        2.000 2.4054E-07
        2.200 6.4188E-07
        2.400 2.2471E-06
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -2.2e-06 1.4e-08 -1.91e-11 1.04e-06 1.38e-09 0.29
    nd: 2.000690
    Vd: 25.425752
    density:
      - value: 4740
    thermal_expansion:
      - temperature_range: 243 343
        value: 7e-06
      - temperature_range: 293 573
        value: 8.7e-06
    dPgF: 0.0117