Closed Loop Kit

Performance of the system is typically ±2%. They are factory installed, and power to the kit 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.