Laser Position Sensor - Quadrant Detector Kit

The SKY-QD100 detector is a 4 quadrant position sensing detector for precise path alignment of light in the 400 to 1100 nm range. The device is capable of measuring beams with a spot size smaller than 7.8 mm, which is the diameter of the quadrant photodiode array. Recommended beam diameter is 1 - 3.9 mm.  The device comes with AC adapter power supply and a data acquisition system with a resolution of up to 13 bit (+/-10V). The data acquisition system works with free software available from Dataq, and can collect data in real time from the X, Y and SUM outputs, as well as having one additional +/- 10V data channel to monitor any accessory equipment. Data can be exported into Excel spreadsheets for further data processing. 

Includes:

1 SKY-QD100 Quadrant photodetector module with AC adapter power supply included.

 1 Dataq DI-145 or DI-1100 data logger

All necessary RCA and USB cables 

runs on Windaq or Windaq lite data logging software, available for free by download here. SKY-QD100 spec sheet available here.

Please contact us for current lead time on this product (custom made). 

Specifications:

In most common applications where the intention is to measure the movement of a laser beam over time in the X-Y plane, the quadrant detector is first mounted on an optical table with the laser and the beam centered on the middle of the four quadrants of the detector. This gives a maximum sum value corresponding to the total energy of the beam, and if perfectly centered, the X and Y outputs will be balanced to zero. As the beam moves in either the X or Y direction, a voltage will appear on one or both of the X and Y outputs which is a fraction of the SUM voltage output. If the beam moves right or up, the voltage on X and Y increases positively, if left or down they increase negatively.