Table I
Index of Refraction of Single-Crystal Silicon (26°C)
Wavelength (μ ) Wavelength reference Index N R Index N T N R − N T 1.3570 Hg 3.5151 3.4975 0.0176 1.3673 Hg 3.5139 3.4962 0.0177 1.3951 Hg 3.5107 3.4929 0.0178 1.5295 Hg 3.4976 3.4795 0.0181 1.6606 TCBa 3.4879 3.4696 0.0183 1.7092 Hg 3.4849 3.4664 0.0185 1.8131 Hg 3.4792 3.4608 0.0184 1.9701 Hg 3.4724 3.4537 0.0187 2.1526 TCB 3.4664 3.4476 0.0188 2.3254 Hg 3.4618 3.4430 0.0188 2.4374 TCB 3.4596 3.4408 0.0188 2.7144 CH3 OH 3.4545 3.4358 0.0188 3.00 DPM 3.4509 3.4320 0.0189 3.3033 Polyb 3.4488 3.4297 0.0191 3.4188 Poly 3.4478 3.4286 0.0192 3.50 DPMc 3.4475 3.4284 0.0191 4.00 DPM 3.4448 3.4255 0.0193 4.258 CO2 3.4436 3.4242 0.0194 4.50 DPM 3.4428 3.4236 0.0192 5.00 DPM 3.4415 3.4223 0.0192 5.50 DPM 3.4405 3.4213 0.0192 6.00 DPM 3.4307 3.4202 0.0195 6.50 DPM 3.4391 4.4195 0.0196 7.00 DPM 3.4387 3.4189 0.0198 7.50 DPM 3.4383 3.4186 0.0197 8.00 DPM 3.4380 3.4184 0.0196 8.50 DPM 3.4377 3.4182 0.0193 10.00 DPM 3.4375 3.4179 0.0196 10.50 DPM 3.4373 3.4178 0.0195 11.04 DPM 3.4371 3.4176 0.0195
a TCB − 1,2,4-triehlorobenaene.
b Poly − polystyrene.
c Perkin-Elmer model 99 double pass monochromator.
N R − Raytheon prism − (refracting angle, 15° − 38′ − 29″)
N T − Texas Instruments prism − (refracting angle, 15° − 45′ − 45″).
Table II
Comparison of Measurements Made on the Same Prisms Using Two Different Instruments (26°C)
Wavelength (μ ) Glass A2059 N BL − N EK ×10−4 Glass C601 N BL − N EK ×10−4
N BL N EK N BL N EK 1.0308 1.8744 1.8744 0 1.7967 1.7966 1 1.12866 1.8705 1.8704 1 1.7933 1.7933 0 1.3622 1.8646 1.8646 0 1.7884 1.7883 1 1.5295 1.8616 1.8616 0 1.7856 1.7854 2 1.6606 1.8594 1.8593 1 1.7834 1.7834 0 1.7012 1.8587 1.8586 1 1.7829 1.7828 1 1.8131 1.8571 1.8570 1 1.7813 1.7813 0 1.9701 1.8348 1.8550 −2 1.7791 1.7790 1 2.1526 1.8521 1.8521 0 1.7764 1.7763 1 2.2493 1.8507 1.8508 −1 1.7750 1.7750 0 2.3254 1.8496 1.8496 0 1.7739 1.7738 1 2.4374 1.8479 1.8480 −1 1.7721 1.7722 −1
N BL —Measurements made at Bausct & Lomb Optical Company.
N EK —Measurements made at Eastman Kodak Company.