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.

 PFD proFALC proDigiLock 110FALC 110 & mFALC 110PDH/DLC proDLC pro LockaWavelength Meter
Description / TypePhase and Frequency detector for error signal generationDigitally 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 applicationOffset phase lockalllinewidth narrowingPDH locking, FM or modulation transfer spectroscopySpectroscopy lockLong-term stabilization
Side-of-fringeNot-applicable not applicable
Top-of-fringeNot-applicableWith PDHWith PDH or PDD not applicable
Max. bandwidth 30 MHz50 MHz (-3 dB)≈ 10 MHz≈ 45 MHz50 MHz (analog)
1.5 MHz (digital)
≈ 30 kHz< 100 Hz
Modulation frequencyNot applicable 17 Hz .. 25 MHz 5 MHz or 25 MHz11 Hz .. 160 kHznot applicable
Accuracydepends on reference (can be very good)2 MHz
Signal analysis  FFT, ...  FFT, ... 
Relock mechanisms With DLC pro Lock   
Computer control  ✔
High voltage output      ✔ 
High bandwidth output ✔ ✔  
Two feedback channels  ✔ ✔Up to 8 channels available
Rack compatibility bDLC pro or DFC CORE requiredDLC pro requiredc  
StrengthHigh frequency dynamicsBest performance   High endIntegrated in DLC proStand-alone

a optional software license for DLC pro
b  DLC ext or SYS DC 110
c Built-in module for DLC pro