Transcript ppt

Prof. Truman D. Black
Optics Magnetism
The eye
•Electro- Laser- and Non-linear Optics
•Nano-
Meso- Atomic- Physics
•The Accommodating Lens
150bilayers Pyrylium/PSS on fused silica
Made Feb 2003
Mean height deviation 29.92nm
Rms height deviation 40.5nm
Av height 90.16nm
Maker Fringe Setup
(quartz)
VBS
APD
Boxcar #2
Boxcar #1
Nd:YAG
AB
Trigger
Trigger
Unwanted
Polarization
TFP
Reference
Signal
Sample
Signal
F(x)
PBSC
Quartz
(VBS) variable beam splitter TFBS
(APD) avalanche photodiode
(PBSC) polarizing beam splitting cube
(TFP) thin film polarizer
(BS) beam splitter
(M) mirror
(/2) half-wave plate
(F1) 850 nm high pass filter
(F2) (IR) blocking Scott glass filter
(RS) rotation stage
(GTP) Glan-Thompson polarizer
M
(IF) interference filter
(PMT) photomultiplier tube
PMT
F1
(quartz)
HWP
F2
GTP
IF
Sample
PMT
RS
Propagation of the “Bound” and
“Free” Second Harmonic Waves
b = sin-1[n2  sin(')]
ab
kb2
x̂
k'

k
Air
–
'2
 '
a = sin-1[n2  sin('2)]
kf2
ẑ
Nonlinear Material
Air
J. Jerphagnon and S.K. Kurtz, “Maker fringes:A detailed comparison of
for isotropic and uniaxial crystals” J. Appl. Phys. 41,1667 (1970)
theory and experiment
Pyrylium NLO Chromophores
(
O
O
C
C
O
N
O
+
BF4
O
) n Polyester
Diphenyl
• The O+ ion is of primary importance in the Ionic SelfAssembled Monolayers (ISAM) film growth
Maker Fringe Pattern of y -Cut LiNbO3 Rotating about
the z -Axis with the Theoretical Fit
120
Residuals
10
SH Intensity Relative (a.u)
100
80
Residuals
10
5
5
0
0
-5
-5
-10
-10
Fringe Data
ss Polarization
Fringe Fit
Envelope Data
60
Envelope Fit
40
20
0
-70
-60
-50
-40
-30
-20
-10
0
10
20
Angle of Incedence (Degrees)
30
40
50
60
70
Nonlinear Optics
• Macroscopic Polarization:
P   (1) E   ( 2) EE   (3) EEE  ...
• (2)IJK=2dIJK tensor:
 d11 d12

d   d 21 d 22
d
 31 d 32
d13
d14
d15
d 23 d 24
d 25
d 33
d 35
d 34
d16 

d 26 
d 36 
• Poled Films Have C Point Group Symmetry
0
0
0 d 31 0 
 0


d 0
0
0 d 24 0 0 
d

d
d
0
0
0
 31 24 33

Pyrylium salt dye for non-poled
polymeric thin film nonlinear optical
waveguide applications
Mark R. Sudduth,1 Samantha R. Fore,1 Derek H. Johnson,2,3
Theresa A. Maldonado,2 Truman D. Black,1 Martin Pomerantz3
1
Department of Physics, 2 Department of Electrical Engineering,
3 Department of Chemistry and Biochemistry
The University of Texas at Arlington
TX Higher Education Coordinating Board ARP
NSF Research Experiences for Undergraduates
CP - Ciliary Process
Z - Zonules
CB - Ciliary Body
L - Lens
I - Iris
SC - Schlemm Canal
S = Sclera