4
ISOMET
2,
CONTROL
Two inputs directly control the RF output;
Gate
and
Modulation
.
The Gate response time (tgm, Fig1) is approximately 200nsec
The RF Modulation response time is < 50nsec
The relationship between the driver control inputs, the RF waveform and AO response is shown below
for analog modulation type.
Time
Analog
Modulation
Input
(0 - 10V)
AM Modulated
RF Output
Zero Order
Control Range
Max Laser O/P
0 W
Ton
Vmod
Minimum
(not 0)
Maximum
Maximum
(= Laser O/P)
First Order
Control Range
0 W
Minimum
FIRST ORDER
ZERO ORDER
RF
tgm
GATE
DRIVER INPUTS
POT Set Level
Figure 1: Typical Modulation Waveforms
