Tech Note 492 Detail

Blackbody Prism Cauchy Constants

Affected Products:

OS-8543 Prism Mount -- Basic Optics

Problem/Symptom:
What is the index of refraction as a function of wavelength for the blackbody prism?

PASCO Solution:

OS-8543 Blackbody Prism Characteristics

Re

Refractive Indices

Symbol Wavelength [nm] Index of Refraction
n2325.4 2325.4 1.68255
n1970.1 1970.1 1.68765
n1529.6 1529.6 1.69382
n1060.0 1060.0 1.70227
nt 1014.0 1.70346
ns 852.1 1.70886
nA' 768.2 1.71291
nr 706.5 1.71681
nC 656.3 1.72084
nC' 643.9 1.72200
n632.8 632.8 1.72308
nD 589.3 1.72802
nd 587.6 1.72825
ne 546.1 1.73430
nF 486.1 1.74648
nF' 480.0 1.74805
ng 435.8 1.76198
nh 404.7 1.77579
ni 365.0 1.80168

 

Cauchy Dispersion Formula

nl2 = A0 + A1l2 + A2l-2+A3l-4+A4l-6+A5l-8
wavelength l is expressed in microns
Cauchy Dispersion constants Value
A0 2.8761537
A1 -9.5635028 · 10-3
A2 3.5024296 · 10-2
A3 1.4706451 · 10-3
A4 -2.4811339 · 10-5
A5 1.1334039 · 10-5

 

Relative Partial Dispersion Constants

PC,t 0.6783
PC,A' 0.3095
Pd,C 0.2889
Pe,C 0.5249
Pg,d 1.3158
Pg,F 0.6046
Ph,g 0.5390
Pi,g 1.5490
P'C',t 0.7117
P'e,C' 0.4723
P'F',e 0.5277
P' i,F' 2.0588

Creation Date: 05/27/2004
Last Modified: 06/4/2004
Mod Summary: