DigiLock
Digital laser locking module
• FPGA-based laser locking: Fast & flexible
• Fully digital and computer controlled
• Fast response, high bandwidth
• Multiple PIDs, Lock In, Pound-Drever-Hall, FFT, network analysis
• Click & Lock, Auto- & ReLock, response, simulation
TOPTICAs DigiLock 110 is the versatile solution for laser control, stabilization, characterization & analysis. Its digital nature makes it easy to use, flexible and intelligent. The FPGA based hardware allows for high bandwidth and flexibility, and with its clever software one has the overview, but can go into every tiny detail if need be.
Applications
• Atom Laser Cooling & Trapping • Ion Laser Cooling & Trapping • Degenerate Quantum Gases (BEC, DFG)
• Rydberg Excitation • Optical Pumping & EIT • Quantum Dots & Microcavities
• Sensing & Metrology • Computing & Simulation • Spectroscopy
• Frequency Comb Spectroscopy
Specifications
Functionality Overview
Functionality
Value
Unit
Comment
Scan function
Scan frequency
0.1 Hz - 33 MHz
Bandwidth limited on some channels
Waveform types
Sine, triangle, square, sawtooth
PID function 1
Signal latency
200
ns
ADC and DAC latency included
Parameters
P, I, D, I cut-off
PID function 2
Signal latency
200
ns
ADC and DAC latency included
Parameters
P, I, D
Analog P function
Bandwidth
21 MHz (-3 dB, -200° phase)
Lock-In function
Modulation frequency
12 Hz - 781 kHz
Pound-Drever-Hall function
Modulation frequency
1.56, 3.13, 6.25, 12.5, 25
MHz
Input Channels
Input Channels
Resolution
Sample rate
Bandwidth
Range
Impedance
Comment
(bit)
(Hz)
(-3 dB) (Hz)
(V)
(Ohm)
Main in
14
100 M
14 M
± 2.1
50
Input signal at <main> has to be between ± 3.5V; it can be shifted with the <input /> and amplified with the PGA </main>
Aux in
14
100 M
15 M
± 2.1
50
Precise in
16
200 k
50 k
± 2.0
10 k
DCC Iact
16
100 k
15 k
± 13.1
40 k
SYS DC 110 backplane
DTC Tact
16
100 k
15 k
± 13.1
40 k
SYS DC 110 backplane
AIO 1 in
16
100 k
15 k
± 12.5
47 k
Normally used as output
AIO 2 in
16
100 k
15 k
± 12.5
47 k
Sum in
27 M
± 1.0
50
Bandwidth between <sum> and <main> </main></sum>
Output Channels
Output Channels Resolution Sample rate Bandwidth Range 50 Ohm Comment (bit)
(Hz)
(-3 dB) (Hz)
(V)
driver
Main out
14
100 M
19 M
± 1.0
Yes
Sum of <sum> and Analog P branch</sum>
Aux out
14
100 M
19 M
± 1.0
Yes
SC 110 out
21
100 k
18 k
± 6.5
No
SYS DC 110 backplane;
amplification by 15 with SC110
DCC Iset
21
100 k
18 k
± 6.5
No
SYS DC 110 backplane
DTC Tset
16
100 k
18 k
± 6.5
No
SYS DC 110 backplane
AIO 1 out
16
100 k
16 k
± 6.5
No
AIO 2 out
16
100 k
16 k
± 6.5
No
Normally used as input
Error out
20 M
± 1.7
Yes
Error out = (<main> + <input />) x Gain/2; bandwidth between <main> and <error></error></main></main>
TRIG
0, 2.6
Yes
General
General Value Supply voltage
± 15 V
Supply current +15 V (typ)
700 mA
Supply current -15 V (typ)
200 mA