Optical Constants at Key Wavelengths

632.8 nm (He-Ne)

n = 1.7577

k = 0.0000

589.3 nm (Na-D)

n = 1.7596

k = 0.0000

532 nm

n = 1.7640

k = 0.0000

1550 nm (Telecom)

n = 1.7380

k = 0.0000

n, k Dispersion Curves

Data Table (Sampled)

Wavelength (μm)	n	k
0.2000	1.90163	0.00000
0.2065	1.88896	0.00000
0.2133	1.87760	0.00000
0.2203	1.86736	0.00000
0.2275	1.85810	0.00000
0.2349	1.84969	0.00000
0.2426	1.84203	0.00000
0.2505	1.83504	0.00000
0.2587	1.82865	0.00000
0.2672	1.82278	0.00000
0.2759	1.81739	0.00000
0.2850	1.81243	0.00000
0.2943	1.80785	0.00000
0.3039	1.80363	0.00000
0.3139	1.79972	0.00000
0.3241	1.79611	0.00000
0.3347	1.79276	0.00000
0.3457	1.78965	0.00000
0.3570	1.78676	0.00000
0.3687	1.78407	0.00000
0.3807	1.78157	0.00000
0.3932	1.77924	0.00000
0.4060	1.77707	0.00000
0.4193	1.77504	0.00000
0.4330	1.77315	0.00000
0.4472	1.77138	0.00000
0.4618	1.76972	0.00000
0.4770	1.76816	0.00000
0.4926	1.76670	0.00000
0.5087	1.76533	0.00000
0.5253	1.76404	0.00000
0.5425	1.76282	0.00000
0.5602	1.76168	0.00000
0.5786	1.76059	0.00000
0.5975	1.75957	0.00000
0.6170	1.75860	0.00000
0.6372	1.75768	0.00000
0.6581	1.75680	0.00000
0.6796	1.75596	0.00000
0.7018	1.75516	0.00000
0.7248	1.75439	0.00000
0.7485	1.75365	0.00000
0.7730	1.75294	0.00000
0.7983	1.75225	0.00000
0.8244	1.75157	0.00000
0.8513	1.75092	0.00000
0.8792	1.75028	0.00000
0.9079	1.74965	0.00000
0.9377	1.74903	0.00000
0.9683	1.74842	0.00000
1.0000	1.74781	0.00000
1.0327	1.74719	0.00000
1.0665	1.74658	0.00000
1.1014	1.74596	0.00000
1.1374	1.74534	0.00000
1.1746	1.74470	0.00000
1.2130	1.74405	0.00000
1.2527	1.74339	0.00000
1.2937	1.74270	0.00000
1.3360	1.74200	0.00000
1.3797	1.74127	0.00000
1.4249	1.74051	0.00000
1.4715	1.73973	0.00000
1.5196	1.73891	0.00000
1.5693	1.73805	0.00000
1.6207	1.73714	0.00000
1.6737	1.73620	0.00000
1.7284	1.73520	0.00000
1.7850	1.73415	0.00000
1.8434	1.73304	0.00000
1.9037	1.73187	0.00000
1.9659	1.73063	0.00000
2.0302	1.72931	0.00000
2.0967	1.72791	0.00000
2.1652	1.72643	0.00000

Sampled data (75 points total). Click "Download Full CSV" for complete data.

Notes

Synthetic sapphire, Extraordinary ray (e), 20 °C

References

1) I. H. Malitson and M. J. Dodge. Refractive index and birefringence of synthetic sapphire. J. Opt. Soc. Am. 62, 1405 (1972)
2) M. J. Dodge. "Refractive index" in Handbook of Laser Science and Technology, Volume IV, Optical Materials: Part 2, CRC Press, Boca Raton, 1986, p. 30
* Ref. 1 is a talk abstract in a conference program; Ref. 2 provides a dispersion formula

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