The D2-125 laser server is designed for low-noise servo-controlled lasers and other precision experimental systems. The PI 2D servo cycle with two-stage internal feedback provides a tight lock between the cavity and the atomic/molecular transition. D2-125 allows users to achieve full wan control of servo cycle parameters, enabling many devices to achieve the best servo cycle, such as acoustic and photoelectric drivers, sound transformers, piezoelectric drivers, etc.
In most cases, the D2-125 is powered by a D2-005 linear power supply. The D2-005 can power up to four servers or D2-100 lasers at the same time, making it a very convenient power option. However, in some cases where a more compact servo system is required, Vescent can provide a built-in power supply option (-IP) to integrate a smaller linear power supply into the D2-125 chassis, ensuring that the servo-locked electronics take up as little space as possible.
The D2-125 laser servo has a Lock Guard automatic relock function, which automatically relocks when the servo cycle is detected to be out of lock.
Lock Guard monitors the servo output when it detects an unlocked point (a rapid change in the servo output; See the arrow on the red trace line below right), it deactivates the servo and keeps the output at the best known effective value. Lock Guard waits for a hold period (the short interval on the blue curve) and then relocks. The Lock Guard waits for a stable time (a long time interval on the blue curve), and when it detects that the system is still unlocked, it will reset the servo output again. In this figure, LG attempted to re-lock three times before the challenge was removed and the re-lock was successful. What actually happens during this time is that the laser beam is blocked and blocked again
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