We present a relation between incident angle and rotation angle detector in the Total Internal Reflection (TIR) experiments when using a right angle prism. In the TIR method, the light coming toward the prism will experience reflection and out of the prism at a certain angle direction. Results of analysis of the geometry and Snell’s law shows that the angular position of the detector is not only determined by the angle of incidence of light alone but also by the size of the prism and the detector position from the rotation axis of goniometer. The experimental results show relation between the angle of detector and angle of goniometer. When the prism rotated 45 °, position of goniometer detector is 2×45 °. However, when the prism rotated at an angle instead of 45 °, detector position µ is not always equal to twice the rotation angle goniometer ψ, so that this relationship needs to be corrected. This correction is also determined by the value of the refractive index of the prism is used. By knowing the relationship between detector position and the incident angle of light, this formulation can be used to control the position of the sample and the detector in the experiments based on ATR.

1.
N. J.
Harrick
and
A. I.
Carlson
,
Appl. Opt.
10
,
19
23
(
1971
).
2.
T. M.
Hsu
,
C. C.
Chang
,
Y. F.
Hwang
, and
K. C.
Lee
,
Chinese J. Phys.
21
,
26
32
(
1983
).
3.
T.
Wakamatsu
and
K.
Saito
,
J. Opt. Soc. Am. B
24
,
2307
2313
(
2007
).
4.
S.
Patskovsky
,
A. V.
Kabashin
, and
M.
Meunier
,
J. Opt. Soc. Am. A
20
,
1644
1650
(
2003
).
5.
L. A.
Averett
and
P. R.
Griffiths
,
Anal. Chem.
80
,
3045
3049
(
2008
).
6.
S.
Viridi
and
Hendro
, “
Model and Visualization of Ray Tracing using JavaScript and HTML5 for TIR Measurement System Equipped with Equilateral Right Angle Prism
”,
The 2nd Indonesian Student Conference on Science and Mathematics (ISCSM)
,
11-12 October 2013
,
Bandung, Indonesia
; arXiv:1310.3335v1 [physics.optics] 12 Oct
2013
.
7.
Y.
Pratama
, “Setup Prisma Siku untuk Studi Pemantulan Total Teredam”,
Skripsi S.Si.
,
Institut Teknologi
Bandung
,
2011
8.
H.
Raether
,
Surface Plasmons
,
Heidelberg
:
Springer Verlag
,
1986
, p.
12
.
9.
E.
Kretschmann
,
Z. Phys.
241
,
313
324
(
1971
).
10.
Z. D
Genchev
,
N. M.
Nedelchev
,
E.
Mateev
, and
H. Y.
Stoyanov
,
Plasmonics
3
,
21
26
(
2008
).
This content is only available via PDF.
You do not currently have access to this content.