w
a
v
e
l
e
n
g
t
h
(
n
m
)
4
0
0
4
5
0
5
0
0
5
5
0
6
0
0
6
5
0
7
0
0
a
n
g
l
e
o
f
a
i
r
w
e
d
g
e
(
m
r
a
d
)
0
.
2
5
0
.
5
0
.
7
5
1