Laser probes - RJ Laser

At a frequency of 1 Hz
In this case the CW probe is operated with
a frequency modulation of 1 Hz for 2 seconds.
With equal on and off times, power
output is only half the time, so the energy
output is halved.
100
75
50
mW
25
0
Eine Periode
0,5
During 1 period, the laser beam is on 1 x
and off 1 x.
1
sek.
1,5
Energy output in frequency operation
mode
Red area = Energy in Joules
Frequency modulation
Frequency =
number of periods / 1
second
1 Hz = 1 period / 1 second
1.000 Hz = 1.000 period / 1 second
1 MHz = 1 x 106 period / 1
second
= (power output x
time) / 2
= (0.05 W x 2 s) / 2
= 0.05 J
2
At a frequency of 2 Hz
In this case, the continuous wave prove is
modulated at 2 Hz, so the energy output is
exactly the same as for 1 Hz operation.
100
75
50
mW
25
Eine Periode
0
0,5
At 2 Hz, the laser beam is on 2 x and off 2 x
each second.
1
sek.
1,5
If you operate your CW probe with
frequency modulation, the energy
output is always halve compared to
the continuous wave mode – independent
of the magnitude of the frequency
modulation. If you want a higher
energy output, you must increase
the treatment time or select a continuous
wave program. If you want a
lower energy output, you must decrease
the treatment time or lower
the power output.
Light frequencies
Frequency =
461 THz =
1 THz =
Velocity (light) /
wavelength
ca. 300,000 km / s /
650 nm
1.000 x 1.000 x 1.000 x
1.000 Hz
2
28