He Refractive Index

Optical constants (n, k) of He, covering 0.48 – 2.06 μm wavelength range.

Range 0.480 – 2.059 μm

Data Points 101

Optical Constants at Key Wavelengths

632.8 nm (He-Ne)

n = 1.0000

k = 0.0000

589.3 nm (Na-D)

n = 1.0000

k = 0.0000

532 nm

n = 1.0000

k = 0.0000

1550 nm (Telecom)

n = 1.0000

k = 0.0000

n, k Dispersion Curves

Data Table (Sampled)

Wavelength (μm)	n	k
0.4801	1.00004	0.00000
0.5117	1.00003	0.00000
0.5432	1.00003	0.00000
0.5748	1.00003	0.00000
0.6064	1.00003	0.00000
0.6380	1.00003	0.00000
0.6695	1.00003	0.00000
0.7011	1.00003	0.00000
0.7327	1.00003	0.00000
0.7642	1.00003	0.00000
0.7958	1.00003	0.00000
0.8274	1.00003	0.00000
0.8589	1.00003	0.00000
0.8905	1.00003	0.00000
0.9221	1.00003	0.00000
0.9537	1.00003	0.00000
0.9852	1.00003	0.00000
1.0168	1.00003	0.00000
1.0484	1.00003	0.00000
1.0799	1.00003	0.00000
1.1115	1.00003	0.00000
1.1431	1.00003	0.00000
1.1746	1.00003	0.00000
1.2062	1.00003	0.00000
1.2378	1.00003	0.00000
1.2694	1.00003	0.00000
1.3009	1.00003	0.00000
1.3325	1.00003	0.00000
1.3641	1.00003	0.00000
1.3956	1.00003	0.00000
1.4272	1.00003	0.00000
1.4588	1.00003	0.00000
1.4903	1.00003	0.00000
1.5219	1.00003	0.00000
1.5535	1.00003	0.00000
1.5851	1.00003	0.00000
1.6166	1.00003	0.00000
1.6482	1.00003	0.00000
1.6798	1.00003	0.00000
1.7113	1.00003	0.00000
1.7429	1.00003	0.00000
1.7745	1.00003	0.00000
1.8060	1.00003	0.00000
1.8376	1.00003	0.00000
1.8692	1.00003	0.00000
1.9008	1.00003	0.00000
1.9323	1.00003	0.00000
1.9639	1.00003	0.00000
1.9955	1.00003	0.00000
2.0270	1.00003	0.00000
2.0586	1.00003	0.00000

Sampled data (101 points total). Click "Download Full CSV" for complete data.

Notes

Standard conditions: 0 °C, 760 torr (101.325 kPa).

References

C. R. Mansfield and E. R. Peck. Dispersion of helium. J. Opt. Soc. Am. 59, 199-203 (1969)

Related Materials (Main)

Ag Ag3AsS3 (e) Ag3AsS3 (o) AgBr AgCl AgGaS2 (e)

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