The Electron-Multiplying CCD (EMCCD) technology renders readout noise negligible thanks to EM Gain, which allows reaching significantly higher frame rates than conventional CCDs by using higher pixel rates. Other than the readout rate, the number of pixels read as well as the size of the sensor will affect the frame rate.
Moreover, the EMCCD sensor’s architecture also gives it a high level of flexibility to create custom readout sequences. This allows to further maximize frame rate when using only portions of the sensors (Regions of Interest – ROIs) or even to reach extremely low exposure times, down to the few microseconds, by minimizing the movement of the charges on the sensor.
