1

tan

rot H

H/t

A=B==

2

2E

E

E

= 1 i 2

k

i

3

ii

r=1

4

I constant

5

skin depth

inverse centimeter

nm

6

a

b

transmissivity T absorptivity k absorbance A

optical density (OD ) log10e

7

(OD )

1960

d

Io

IoR

1-R

1-R

1-R

1-R

R

R

R

R

R

R

R

(1-R)2exp(-d)I0

(1-R) 2R2exp(-3d)I0

(1-R)2R4exp(-5d)I0

(1-R)2R6exp(-7d)I0

1-R

R

1-R

1-R

1-R

d

Io

IoR

1-R

1-R

1-R

1-R

R

R

R

R

R

R

R

(1-R)2exp(-d)I0

(1-R) 2R2exp(-3d)I0

(1-R)2R4exp(-5d)I0

(1-R)2R6exp(-7d)I0

1-R

R

1-R

1-R

1-R

8

T R (h) ()

(spectroscopic ellipsometry: )

n

9

(Kramers-Kronig) 1

Caucy Kramers-KronigK-K

1

K-K K-K 11

n

10

n

1

11

mq

0

E=E0eit

f=qE- 02X

- 0 (dX/dt )m(d2X/dt2)

02=k/m

k

0

mq

0

E=E0eit

f=qE- 02X

- 0 (dX/dt )m(d2X/dt2)

02=k/m

k

0

12

1 So

13

Born Huang

1

1

14

15

0 0/0 n2

n2-1 = C + D/ (02 -2 ) = C + D2/ (2 -02 ) C, D, D dn/d>0 dn/d

16

105a a=510-4

q0 Si

TATransverse Acoustic, LO:Longitudinal Acoustic

1

2

TO

TO LO CdS R TO TO CdS 12 R TO 211

LO R

Kramers-Kronig 12

(n,)

2 TO

1

LO CdS TO 240cm-1LO 300cm-1

CdS

17

0 Lyddane-Sachs-Teller-TO TO LO LO LOTO2 =0/

= n2 Lyddane-Sachs-Teller-

8 CdS (n,)(1, 2) cm-1=1/