The QED attenuators increase the maximum energy, energy density, average power and average power density that the QE series detectors can handle. They are engineered to typically transmit 30-50% (at 1064 nm) of the incident radiation to the detector in a near Lambertian pattern (very wide diffusion pattern). Their slide-in casing make them easy to install and remove and they are held securely in place with the use of simple set screws. Since they become part of the detector, it is important to understand how they will affect the calibration.
Depending on how you plan to use a QE detector and QED attenuator, different purchasing and calibration options are available.
QE detector with QED attenuator included
Detector name contains “-QED”
The detector and its attenuator are calibrated as a single product.
CALIBRATED AS A PAIR
This product is calibrated with the QED attenuator in place. You may remove the attenuator, but your measurements will not be calibrated with this configuration.
The detector is fully calibrated both with and without attenuator. This configuration comes with a DB15 adaptor.
The detector is fully calibrated without attenuator, and is calibrated at a single wavelength with the attenuator.
NO EXTRA CALIBRATION
The QE detector is fully calibrated without attenuator only. You may add the attenuator, but your measurements will not be calibrated with this configuration.