Technology Overview

FROG Pulse Measurement

Southern Photonics Frequency Resolved Optical Gating (FROG) pulse analyzers work on the same principle as an SHG Autocorrelator. It can therefore resolve sub-picosecond pulses since it is not limited by the response time of the detector. In addition to this at each delay position on the autocorrelation, a complete SHG spectrum is measured, so that both the spectral and temporal characteristics of the pulse are captured simultaneously.

The FROG measurent yields a two dimensional plot referred to as a spectrogram, which displays the SHG spectrum as a function of temporal delay. An example spectrogram is shown on the right. Once a spectrogram of your pulse has been measured a fast recovery algorithm can be used to completely recover all the characteristics of the pulse.

Related product: HR150

FREAG Pulse Measurement

Southern Photonics Frequency Resolved Electro-Absorption Gating (FREAG) pulse analyzers work on the same principle as an SHG Autocorrelator, but uses electro-absorption gating to sample the pulse in time. It is therefore very sensitive and can resolve sub-picosecond pulses since it is not limited by the response time of the detector. In addition to this at each delay position of the gate, a complete spectrum is measured, so that both the spectral and temporal characteristics of the pulse are captured simultaneously.

Related product: EG150