Laser Locking Electronics

Intelligent solution for versatile laser locking

TOPTICA provides exceptionally stable tunable diode lasers that feature narrow linewidths. Still, many demanding applications have even more rigorous requirements. To reduce remaining frequency fluctuations or cancel out long-term frequency drifts, active frequency stabilization, or "locking", is required.

 FALC proDigiLock 110FALC 110 & mFALC 110PDH/DLC proPDD 110/FDLC pro LockaWavelength Meter
Description / TypeDigitally controlled fast analog PIDVersatile digital locking solution incl. PIDFast analog 2-Channel PIDPound-Drever-Hall Signal Generation, requires additional PIDAll-digital  feedback solution, incl. PIDWavelength meter with PID option
Main applicationalllinewidth narrowingPDH locking, FM or modulation transfer spectroscopySpectroscopy lockLong-term stabilization
Side-of-fringe  not applicable
Top-of-fringeWith PDHWith PDH or PDD not applicable
Max. bandwidth50 MHz (-3 dB)≈ 10 MHz≈ 45 MHz50 MHz (analog)
1.5 MHz (digital)
≈ 7 MHz≈ 30 kHz< 100 Hz
Modulation frequency 17 Hz .. 25 MHz 5 MHz or 25 MHz12 - 35 MHz b11 Hz .. 160 kHznot applicable
Accuracydepends on reference (can be very good)   2 MHz
Signal analysis FFT, ...   FFT, ... 
Relock mechanismsWith DLC pro Lock    
Computer control  ✔ 
High voltage output      ✔ 
High bandwidth output ✔ ✔  
Two feedback channels ✔ ✔Up to 8 channels available
Rack compatibility cDLC pro requiredd  
StrengthBest performance   High endFor SYS DC 110Integrated in DLC proStand-alone

a optional software license for DLC pro
b 5- 70 MHz versions available
c  DLC ext or SYS DC 110
d Built-in module for DLC pro
e No high voltage available if operated in DLC ext