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Optical constants

Refractive index of SrF2 (Strontium fluoride)

Bosomworth 1967: k 70–1000 µm; 200 K

Data
tabulated k
Range
70.42–1000 µm
Points
133
Temperature
200 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength. Note: the source gives k only; n is not available.

At one wavelength

Range 70.42–1000 µm
Refractive index n
—
Extinction coefficient k
0.0109224
Permittivity ε1
—
Permittivity ε2
—
Absorption coefficient α
5.17941 cm⁻¹
Penetration depth δ = λ/(2πk)
3.86144e+06 nm
Abbe number Vd
—
Chromatic dispersion dn/dλ
— µm⁻¹
Group index ng
—
Group velocity dispersion
— fs²/mm
Dispersion parameter D
— ps/(nm·km)
Photon energy
0.00467865 eV

ε = (n + ik)², α = 4πk/λ, ng = n − λ dn/dλ, GVD = λ³/(2πc²) d²n/dλ², D = −(λ/c) d²n/dλ². Group-velocity dispersion is given for formula data only.

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Comments and conditions

200 K

Conditions

temperature
200 K
Notes on the source data (kept exactly as published):
  • the source gives k only; n is not available

References

D. R. Bosomworth. Far-infrared optical properties of CaF2, SrF2, BaF2, and CdF2. Phys. Rev., 157, 709 (1967)
  • doi:10.1103/physrev.157.709 Far-Infrared Optical Properties of Ca<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">F</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>, Sr<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">F</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>, Ba<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">F</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>, and Cd<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">F</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>, Physical Review (1967)

Cite

D. R. Bosomworth. Far-Infrared Optical Properties of Ca<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">F</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>, Sr<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">F</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>, Ba<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">F</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>, and Cd<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">F</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>. Physical Review, 157, 709-715 (1967), doi:10.1103/physrev.157.709; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

133 rows as published
CSV comma separated TXT tab separated YAML n, k Full database record original YAML All quantities CSV JSON metadata
SrF2 (Strontium fluoride), Bosomworth 1967: k 70–1000 µm; 200 K: n and k versus wavelength
λ (µm)k
70.4230.0267
70.9220.0259
71.4290.0251
71.9420.0243
72.4640.0235
72.9930.0227
73.5290.0219
74.0740.0213
74.6270.0206
75.1880.0199
75.7580.0192
76.3360.0186
76.9230.0181
77.5190.0176
78.1250.0171
78.740.0165
79.3650.016
80.00.0156
80.6450.0153
81.3010.015
81.9670.0147
82.6450.0145
83.3330.0144
84.0340.0142
84.7460.0141
85.470.0139
86.2070.0138
86.9570.0138
87.7190.0137
88.4960.0137
89.2860.0136
90.090.0136
90.9090.0136
91.7430.0136
92.5930.0136
93.4580.0137
94.340.0138
95.2380.0139
96.1540.0139
97.0870.014
98.0390.0141
99.010.0142
100.00.0144
101.010.0145
102.040.0147
103.090.0148
104.170.015
105.260.0151
106.380.0153
107.530.0155
108.70.0157
109.890.0159
111.110.0161
112.360.0163
113.640.0166
114.940.0169
116.280.0173
117.650.0176
119.050.0178
120.480.018
121.950.0182
123.460.0183
125.00.0184
126.580.0185
128.210.0187
129.870.0188
131.580.0188
133.330.0189
135.140.0189
136.990.019
138.890.019
140.850.019
142.860.0189
144.930.0188
147.060.0187
149.250.0186
151.520.0185
153.850.0184
156.250.0183
158.730.0181
161.290.0179
163.930.0178
166.670.0176
169.490.0174
172.410.0172
175.440.017
178.570.0168
181.820.0166
185.190.0163
188.680.016
192.310.0157
196.080.0153
200.00.0149
204.080.0146
208.330.0143
212.770.0139
217.390.0134
222.220.0131
227.270.0128
232.560.0125
238.10.0121
243.90.0118
250.00.0116
256.410.0113
263.160.011
270.270.0107
277.780.0105
285.710.0102
294.120.00996
303.030.00975
312.50.00953
322.580.00927
333.330.009
344.830.00874
357.140.0085
370.370.00825
384.620.00798
400.00.00772
416.670.0075
434.780.00728
454.550.00703
476.190.00677
500.00.00652
526.320.00631
555.560.00612
588.240.00593
625.00.00572
666.670.00548
714.290.0052
769.230.00495
833.330.00473
909.090.00451
1000.00.00429