LBP2 User Guide
Document No: 50306-001
Rev G 3/12/2020
Page 92
eccentricity:
x
y
x
d
d
d
z
e
2
2
)
(
40
i
A
(z) effective
irradiation area
x
3.2.7
Irradiation area at location z
for which the power/energy
density exceeds the
threshold density.
41
E
(z)
H
(z)
effective avg.
power/energy
density
x
3.2.8
Spatially averaged
power/energy density of the
distribution at location z,
defined as the weighted
mean.
effective average power:
i
A
P
z
E
)
(
effective average energy:
i
A
Q
z
H
)
(
42
F
(z)
flatness factor
x
3.2.9
Ratio of the effective
average power/energy
density to the maximum
power/energy density at
location z.
flatness factor:
max
)
(
E
E
z
F
max
)
(
H
H
z
F
for:
1
0
F
43
U
(z)
beam
uniformity
x
3.2.10
Normalized RMS deviation
of power/energy density
from its avg. value at
location z.
beam uniformity for CW-
beams:
beam uniformity for pulsed
beams:
dxdy
E
y
x
E
A
E
U
i
2
)
,
(
1
1
