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LRS-9400 Series External Photodiode Array Calibration

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LRS-9400 Series External Photodiode Array Calibration

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The LRS-9400 Series Laser Reliability and Burn-In Test Systems support external optical power monitoring through the use of removable photodiode arrays that attach to the device fixtures. The arrays incorporate either Si or InGaAs detectors and are temperature controlled for high stability.Photodiode arrays are calibrated using a single point calibration and a nominal responsivity curve to provide a calibration accuracy of ±10% over the specified wavelength range of the array. The responsivity of each photodiode is individually measured at a single wavelength and power during system calibration at the factory. During operation, this calibration responsivity and a table of nominal responsivity vs wavelength are then used to calculate the measured optical power at other wavelengths.

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