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High Frequency Servo Controller0 pages
Servo Controller
Pound Drever Hall Locking Scheme
- High Speed Servo Controller
- Modulator Demodulator
Scientific Lasers
Electronic Systems & Devices
Optical Cooling & Trapping
Ultrastable Laser Systems
0.4
Balanced signal [ mV ]
anced
V
6.834
6.834 GHz
3
3.035 GHz
0.3
0.2
-0.1
0.14
87
RB: 5S1/2, F=2 - 5P3/2, F=1,2,3
85
0.12
RB: 5S1/2, F=2 - 5P3/2, F=1,2,3
0.10
0.08
87
0.06
RB: 5S1/2, F=1 - 5P3/2, F=0,1,2
85
RB: 5S1/2, F=3 - 5P3/2, F=2,3,4
Laser transmission [ mV ]
MOT & REFERENCE CELLS
Laser Transmission [ mV ]
Side Of Fringe
Top Of Fringe
Pound Drever Hall
Bjorklund
Balanced Signal [ m ]
anced
mV
LOCKING SCHEMES
200
2
2
6 P 1 /2 ,F = 4 - 6 P 3 /2 ,F = [2 ,3 ,4 ]
6
F
6
F
3 4
2
2
6 P 1 /2 ,F = 3 - 6 P 3 /2 ,F = [3 ,4 ,5 ]
6
6
50
0
-5 0
-5
80
0
5 .1 7 0 G H z
5
4 .0 2 1 G H z
70
60
50
40
30
20
0.04
0
2
4
-8
6
-6
-4
0
2
4
6
8
156.95 MHz
Balanced signal [ mV ]
Rubidium Cesium
Balanced Signal [ mV ]
0 .2 5
0.25
266.65 MHz
0.20
0.15
0.10
0.05
F=1
2
F=1 co 3
F=1 co 2
0.11
F=2 co 3
F=2
0.10
F=3
87
Rb : 5S1/2, F=2 - 5P3/2 F=
F= 4 co 5
F= 3 co 4
0 .1 0
F= 3
F= 4
F= 3
-2 0 0
-2 0 0
0
200
400
0
200
400
0 .0 7
0 .0 6
0 .0 5
0 .0 4
0 .0 3
0.09
-500
-400
-300
-200
-100
0
100
R e la tiv e F req u en cy [ M H z ]
Frequency [ MHz ]
D2 Transitions in Rb, central wavelength 780.27nm
LB2001 & LB2005
F= 3 co 5
0 .1 5
-4 0 0
Laser transmission [ mV ]
Laser Transmission [ mV ]
2
C s-D 2 : 6 P 1 /2 ,F = 4 - 6 P 3 /2 ,F =
-4 0 0
0.12
Potassium Lithium
133
0 .2 0
D2 - Transitions in
133
Cs, central wavelength 852.347 nm
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