# 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: |
    M. R. Querry. Optical constants, <a href="https://apps.dtic.mil/sti/citations/ADA158623"><i>Contractor Report</i> CRDC-CR-85034 (1985)</a>
COMMENTS: |
    Cuprous oxide pellet.
DATA:
  - type: tabulated nk
    data: |
        2.5000 2.262 0.025
        2.5063 2.267 0.026
        2.5126 2.268 0.026
        2.5189 2.268 0.026
        2.5253 2.268 0.027
        2.5316 2.268 0.027
        2.5381 2.269 0.028
        2.5445 2.270 0.028
        2.5510 2.270 0.028
        2.5575 2.270 0.029
        2.5641 2.270 0.029
        2.5707 2.271 0.029
        2.5773 2.271 0.029
        2.5840 2.272 0.029
        2.5907 2.272 0.030
        2.5974 2.272 0.030
        2.6042 2.273 0.031
        2.6110 2.273 0.031
        2.6178 2.274 0.031
        2.6247 2.274 0.030
        2.6316 2.274 0.031
        2.6385 2.274 0.031
        2.6455 2.274 0.031
        2.6525 2.274 0.031
        2.6596 2.274 0.032
        2.6667 2.275 0.033
        2.6738 2.276 0.033
        2.6810 2.277 0.033
        2.6882 2.277 0.032
        2.6954 2.277 0.032
        2.7027 2.277 0.032
        2.7100 2.277 0.033
        2.7174 2.277 0.033
        2.7248 2.278 0.033
        2.7322 2.278 0.032
        2.7397 2.278 0.033
        2.7473 2.278 0.033
        2.7548 2.278 0.032
        2.7624 2.278 0.033
        2.7701 2.278 0.033
        2.7778 2.278 0.033
        2.7855 2.278 0.033
        2.7933 2.278 0.033
        2.8011 2.277 0.034
        2.8090 2.277 0.034
        2.8169 2.277 0.035
        2.8249 2.277 0.035
        2.8329 2.277 0.036
        2.8409 2.278 0.036
        2.8490 2.278 0.037
        2.8571 2.278 0.037
        2.8653 2.278 0.038
        2.8736 2.279 0.038
        2.8818 2.279 0.039
        2.8902 2.280 0.039
        2.8986 2.280 0.039
        2.9070 2.280 0.039
        2.9155 2.280 0.040
        2.9240 2.281 0.040
        2.9326 2.281 0.040
        2.9412 2.281 0.040
        2.9499 2.281 0.040
        2.9586 2.281 0.041
        2.9674 2.282 0.042
        2.9762 2.283 0.042
        2.9851 2.284 0.042
        2.9940 2.284 0.042
        3.0030 2.284 0.042
        3.0120 2.284 0.042
        3.0211 2.285 0.043
        3.0303 2.285 0.043
        3.0395 2.286 0.043
        3.0488 2.286 0.043
        3.0581 2.286 0.043
        3.0675 2.286 0.043
        3.0769 2.286 0.044
        3.0864 2.287 0.044
        3.0960 2.288 0.044
        3.1056 2.288 0.044
        3.1153 2.288 0.045
        3.1250 2.288 0.045
        3.1348 2.289 0.045
        3.1447 2.289 0.045
        3.1546 2.290 0.045
        3.1646 2.290 0.045
        3.1746 2.291 0.046
        3.1847 2.292 0.045
        3.1949 2.292 0.045
        3.2051 2.292 0.045
        3.2154 2.292 0.045
        3.2258 2.292 0.045
        3.2362 2.293 0.045
        3.2680 2.294 0.046
        3.2680 2.293 0.046
        3.2787 2.295 0.046
        3.2895 2.295 0.046
        3.3003 2.296 0.046
        3.3113 2.296 0.046
        3.3223 2.297 0.045
        3.3223 2.293 0.046
        3.3333 2.297 0.045
        3.3445 2.297 0.045
        3.3557 2.297 0.045
        3.3670 2.297 0.044
        3.3784 2.297 0.045
        3.3898 2.297 0.045
        3.4014 2.297 0.045
        3.4130 2.298 0.045
        3.4247 2.298 0.045
        3.4364 2.298 0.045
        3.4483 2.298 0.045
        3.4602 2.298 0.046
        3.4722 2.299 0.046
        3.4843 2.299 0.046
        3.4965 2.300 0.046
        3.5088 2.300 0.046
        3.5211 2.300 0.046
        3.5336 2.301 0.046
        3.5461 2.301 0.045
        3.5587 2.301 0.045
        3.5714 2.301 0.045
        3.5842 2.302 0.045
        3.5971 2.302 0.045
        3.6101 2.302 0.045
        3.6232 2.302 0.045
        3.6364 2.302 0.045
        3.6496 2.302 0.045
        3.6630 2.303 0.045
        3.6765 2.303 0.045
        3.6900 2.303 0.045
        3.7037 2.304 0.045
        3.7175 2.304 0.045
        3.7313 2.304 0.045
        3.7453 2.305 0.043
        3.7594 2.305 0.045
        3.7736 2.305 0.044
        3.7879 2.305 0.044
        3.8023 2.305 0.044
        3.8168 2.306 0.044
        3.8314 2.306 0.044
        3.8462 2.306 0.044
        3.8610 2.306 0.044
        3.8760 2.306 0.044
        3.8911 2.306 0.043
        3.9063 2.306 0.043
        3.9216 2.306 0.043
        3.9370 2.307 0.043
        3.9526 2.307 0.043
        3.9683 2.307 0.043
        3.9841 2.307 0.043
        4.0000 2.307 0.043
        4.0161 2.307 0.043
        4.0323 2.307 0.043
        4.0486 2.307 0.043
        4.0650 2.307 0.044
        4.0816 2.308 0.044
        4.0984 2.308 0.043
        4.1152 2.308 0.043
        4.1322 2.308 0.043
        4.1494 2.308 0.043
        4.1667 2.309 0.043
        4.1841 2.308 0.042
        4.2017 2.308 0.043
        4.2194 2.308 0.043
        4.2373 2.308 0.043
        4.2553 2.308 0.043
        4.2735 2.309 0.043
        4.2918 2.309 0.043
        4.3103 2.309 0.043
        4.3290 2.309 0.043
        4.3478 2.309 0.043
        4.3668 2.309 0.042
        4.3860 2.309 0.042
        4.4053 2.309 0.043
        4.4248 2.310 0.043
        4.4444 2.310 0.043
        4.4643 2.310 0.042
        4.4843 2.310 0.042
        4.5045 2.310 0.042
        4.5249 2.309 0.042
        4.5455 2.310 0.042
        4.5662 2.310 0.042
        4.5872 2.310 0.042
        4.6083 2.310 0.042
        4.6296 2.309 0.042
        4.6512 2.310 0.043
        4.6729 2.310 0.043
        4.6948 2.310 0.043
        4.7170 2.310 0.042
        4.7393 2.310 0.042
        4.7619 2.310 0.043
        4.7847 2.310 0.043
        4.8077 2.311 0.043
        4.8309 2.311 0.043
        4.8544 2.311 0.043
        4.8780 2.310 0.042
        4.9020 2.310 0.043
        4.9261 2.310 0.043
        4.9505 2.311 0.043
        4.9751 2.310 0.043
        5.0000 2.310 0.044
        5.0251 2.311 0.045
        5.0505 2.312 0.045
        5.0761 2.313 0.044
        5.1020 2.313 0.044
        5.1282 2.313 0.044
        5.1546 2.313 0.044
        5.1813 2.314 0.044
        5.2083 2.314 0.044
        5.2356 2.314 0.043
        5.2632 2.314 0.043
        5.2910 2.314 0.044
        5.3191 2.315 0.043
        5.3476 2.315 0.043
        5.3763 2.313 0.043
        5.4054 2.315 0.042
        5.4348 2.315 0.042
        5.4645 2.315 0.042
        5.4945 2.315 0.042
        5.5249 2.315 0.042
        5.5556 2.315 0.041
        5.5866 2.314 0.042
        5.6180 2.315 0.042
        5.6497 2.315 0.042
        5.6818 2.315 0.042
        5.7143 2.315 0.042
        5.7471 2.315 0.041
        5.7803 2.315 0.041
        5.8140 2.315 0.041
        5.8480 2.315 0.040
        5.8824 2.314 0.040
        5.9172 2.314 0.040
        5.9524 2.314 0.040
        5.9880 2.314 0.040
        6.0241 2.314 0.040
        6.0606 2.314 0.040
        6.0976 2.314 0.040
        6.1350 2.314 0.040
        6.1728 2.313 0.041
        6.2112 2.313 0.041
        6.2500 2.313 0.041
        6.2893 2.314 0.041
        6.3291 2.314 0.041
        6.3694 2.314 0.041
        6.4103 2.314 0.040
        6.4516 2.314 0.040
        6.4935 2.314 0.040
        6.5359 2.314 0.040
        6.5789 2.314 0.040
        6.6225 2.314 0.040
        6.6667 2.314 0.039
        6.7114 2.313 0.040
        6.7568 2.313 0.040
        6.8027 2.314 0.039
        6.8493 2.313 0.039
        6.8966 2.312 0.039
        6.9444 2.312 0.039
        6.9930 2.312 0.040
        7.0423 2.312 0.039
        7.0922 2.312 0.040
        7.1429 2.313 0.040
        7.1942 2.313 0.040
        7.2464 2.313 0.039
        7.2993 2.314 0.039
        7.3529 2.314 0.037
        7.4074 2.313 0.037
        7.4627 2.313 0.036
        7.5188 2.312 0.036
        7.5758 2.312 0.035
        7.6336 2.312 0.034
        7.6923 2.311 0.034
        7.7519 2.310 0.033
        7.8125 2.309 0.033
        7.8740 2.308 0.033
        7.9365 2.307 0.032
        8.0000 2.307 0.032
        8.0645 2.306 0.032
        8.1301 2.305 0.031
        8.1967 2.303 0.031
        8.2645 2.302 0.031
        8.3333 2.301 0.031
        8.4034 2.299 0.031
        8.4746 2.298 0.031
        8.5470 2.296 0.031
        8.6207 2.294 0.032
        8.6957 2.293 0.034
        8.7719 2.293 0.036
        8.8496 2.293 0.037
        8.9286 2.294 0.038
        9.0090 2.296 0.037
        9.0909 2.296 0.035
        9.1743 2.295 0.033
        9.2593 2.294 0.032
        9.3458 2.292 0.031
        9.4340 2.291 0.030
        9.5238 2.289 0.029
        9.6154 2.286 0.028
        9.7087 2.283 0.028
        9.8039 2.281 0.028
        9.9010 2.278 0.029
        10.0000 2.277 0.030
        10.1010 2.276 0.029
        10.2041 2.273 0.027
        10.3093 2.270 0.027
        10.4167 2.268 0.027
        10.5263 2.265 0.027
        10.6383 2.261 0.026
        10.7527 2.257 0.026
        10.8696 2.254 0.026
        10.9890 2.249 0.025
        11.1111 2.245 0.025
        11.2360 2.240 0.026
        11.3636 2.235 0.026
        11.4943 2.229 0.027
        11.6279 2.224 0.029
        11.7647 2.218 0.029
        11.9048 2.212 0.030
        12.0482 2.205 0.030
        12.1951 2.198 0.031
        12.3457 2.190 0.032
        12.5000 2.181 0.033
        12.6582 2.172 0.033
        12.8205 2.161 0.032
        12.9870 2.148 0.030
        13.1579 2.131 0.027
        13.3333 2.109 0.027
        13.5135 2.083 0.028
        13.6986 2.051 0.031
        13.8889 2.013 0.040
        14.0845 1.971 0.054
        14.2857 1.925 0.073
        14.4928 1.871 0.087
        14.7059 1.779 0.098
        14.9254 1.616 0.147
        15.1515 1.392 0.333
        15.3846 1.250 0.736
        15.6250 1.384 1.275
        15.8730 1.856 1.694
        16.1290 2.525 1.822
        16.3934 3.190 1.471
        16.6667 3.366 0.852
        16.9492 3.209 0.489
        17.2414 3.057 0.330
        17.5439 2.947 0.249
        17.8571 2.868 0.200
        18.1818 2.803 0.171
        18.5185 2.755 0.158
        18.8679 2.723 0.152
        19.2308 2.704 0.146
        19.6078 2.692 0.138
        20.0000 2.681 0.125
        20.4082 2.672 0.113
        20.8333 2.663 0.098
        21.2766 2.650 0.083
        21.7391 2.635 0.073
        22.2222 2.622 0.069
        22.7273 2.615 0.068
        23.2558 2.615 0.064
        23.8095 2.616 0.054
        24.3902 2.613 0.039
        25.0000 2.604 0.023
        25.6410 2.590 0.012
        26.3158 2.578 0.005
        27.0270 2.565 -0.001
        27.7778 2.553 -0.002
        28.5714 2.543 -0.004
        29.4118 2.535 -0.002
        30.3030 2.531 -0.002
        31.2500 2.528 -0.003
        32.2581 2.523 -0.006
        33.3333 2.519 -0.008
        34.4828 2.513 -0.012
        35.7143 2.506 -0.012
        37.0370 2.502 -0.013
        38.4615 2.496 -0.012
        40.0000 2.496 -0.013
        41.6667 2.490 -0.018
        43.4783 2.482 -0.019
        45.4545 2.481 -0.007
        47.6190 2.483 -0.023
        50.0000 2.467 -0.021
        52.6316 2.462 -0.018
        55.5556 2.456 -0.012