PD300-BB Radiometric Sensor

Overview of PD300-BB radiation sensor:

The PD300-BB radiometric sensor with swivel mount has a flat spectral response photdiode sensor for measuring broadband light sources. It covers the spectral range 430 - 1000nm and has a 10x10mm aperture. Its power measuring range is 50pW - 4mW. The 50mW version measures from 50pW to 50mW. The sensor comes with a 1.5 meter cable for connecting to a meter or PC interface.

PD300-BB Sensor Drawing：

Main parameters:

Problem summary：

If there is a broadband light source, but want to measure the power of a specific wavelength, can you set the instrument to that wavelength and measure it?

PD300 series photodiode based sensors are calibrated using a scanning monochromator (plus several laser "anchors") through a full spectrum curve.

The wavelength ("laser") setting tells the instrument what wavelength is being used, so the corresponding calibration factor should be applied when measuring. However, it does not physically limit the possibility of other wavelengths entering.

All light entering the detector (within the specified range of the sensor) will be measured; The instrument will apply the calibration factor applicable to the selected wavelength, and "think" that only the wavelength exists. In other words, these sensors use monochromatic light sources. Their relative spectral response is uneven, so they are not suitable for broadband beams.

Therefore, if you want to check a wavelength from a broadband light source, you need to use a wavelength filter that allows only that wavelength to pass through, and then set the instrument to an appropriate wavelength to consider the relative sensitivity of the detector.