Quadrant Detectors

The C30845EH is a high quality N-type Silicon PIN quadrant photodiode in a hermetically sealed TO-8 package, designed for the 300 to 1100 nm wavelength range. Because of the large area (50 mm²), the device is useful in obtaining position information from both focused and defocused spots in either pulsed or CW mode.

The C30927EH-02 quadrant silicon avalanche photodiode with 1.55 mm useful diameter is designed with a double diffused “reach-through” structure. The quadrant structure has a common avalanche junction, with separation of the quadrants achieved by segmentation of the light-entry p+ surface opposite the junction. With this design, there is no dead space between the elements and therefore no loss of response at boresight.The C30927EH-02 is optimized for operating at 900 nm, providing high responsivity and excellent performance when operated within about 50 nm of the specified wavelength.

The C30927EH-03 quadrant silicon avalanche photodiode with 1.55 mm useful diameter is designed with a double diffused “reach-through” structure. The quadrant structure has a common avalanche junction, with separation of the quadrants achieved by segmentation of the light-entry p+ surface opposite the junction. With this design, there is no dead space between the elements and therefore no loss of response at boresight.The C30927EH-03 is optimized for operating at 800 nm, providing high responsivity and excellent performance when operated within about 50 nm of the specified wavelength.