Power control system 48

laseropticalclosed-loop

The system includes a beam sampler and closed-loop control system to stabilize the output power of the water-cooled 48-1 CO2 lasers. The Closed Loop System works with the UC-2000 laser controller. Performance of the system is typically ±2%. The beam sampler and closed loop control system are factory installed, and works with the UC-2000 laser controller. System power is provided through a wall plug transformer delivering 24VDC. A beam-splitter internal to the sampler diverts 8% of the output beam to a diffuser and thermo-pile detector. The thermo-pile detector signal is amplified within the sampling enclosure to a 1 to 12V signal level. A remotely located controller generates a variable duty cycle 5 kHz signal to maintain a constant average power of the laser. On a custom basis, the control frequency can be raised to 20 kHz for less optical ripple.