A 0. 4 mm Interferometer System Using Dielectric Waveguide Page: 3 of 11
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been achieved only recently (20). Tn the combined po 1 ayi met er/i n tc-r f reromc-1 er , the
authors employed a ferrite polarizaLion modulator which was driven by audio fre-
quency current. The detector signal at the modulation frequency was synchronously
detected by a b Igh- tsensf t ivity lock-in ampiifipf, This caper presents the recent
results on a modified system.
The modifies- inn is ! be result of I so • .> }.,r '
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and fr<»m Lb
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1,S. ;k -and
C)
modifi
ea i i oil
of ! Ijf r ■ 1 • f l r 11 :
firs 1 i)
:j 1 1 '
V 1..'?
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(1 ct c*c L i on o
f t be
Faraday
rot ation
S
i v n a 1 s .
The r. ■ j j i sis
opt !rs
sys;
; r’n u i
i 1 jsecl
open-^j. r i )
.■ns'.n i
ssion of
las,
■ r ■».■;
ins by a
sot: of n■ 1 :iy ]<
Tlie
:> vs [ i
m was
subject to
rosis l tit* r ;ib 1 e 1
< '.s.S
1C
sO
o
0
) fine 1 o va \ er
■vapor ;
ibs< * i
‘pt t on
dll! :i;e
be;n i d r. •
r it iy:
r and i.-s
s 1-
’ : (- s
,1.
II- to ■
! ",!lcl r * ' M o (■ | J
on • - ctj
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rial
ai- oi p-
...able ■' i tee p at
id :.'r ho; i e flee ,1 ' ; i :
'! . r 1, i i V is : • I ■ h i I
e i 1 "a ■ ! 1 11 o r for t he Safi..■
receiver system. these improvenent s have made possible mult irhurd -
olictrnn densily and Faraday rntal ion on (lie 1SX-B tel .mk.
t ion.
fee use of ; s.
-i ; i iff] <:
I.*, i i i
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A
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cw itl ,aii ft
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by -wavrsst idr Ms
ers. The
F 1 R i ,
ivit ii'S are t
•red • urjj i ho s tee : v.’c t >
a .) ! la! e
at f requeue its differ i tig bv /: f of tin* order oi :'00 KFz. dip linearly Jiol :t r < .-ed
bc.'im of the s»iirro laser is passed I ' i ro'U'Ji t he polar.' ’.at ion modulator into 1 lie
dielectrir v..vase ide and is focie-ed on he i enter of the plasma chamber. The
lasers and the ferrite polarisation modulator have Wen previously described in
detail (20,21). t’ho w tvesu ides are ••>.ido of 2.5'1-eti ID plexiglass tubing. '-liter
vapor absorption is el i -ii tinted by si i;:bf ly pressjtfiz ing the waveguide with dry
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Hutchinson, D. P.; Ma, C. H.; Staats, P. A. & Vander Sluis, K. L. A 0. 4 mm Interferometer System Using Dielectric Waveguide, article, January 1, 1982; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1087095/m1/3/: accessed May 31, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.