Ultrafast chirped optical waveform recorder using referenced heterodyning and a time microscope

摘要: A new technique for capturing both the amplitude and phase of an optical waveform is presented. This can capture signals with many THz bandwidths in a single shot (e.g., temporal resolution about 44 fs), or be operated repetitively at high rate. That is, each window (or frame) captured shot, real time, but process may run repeatedly single-shot. invention expands upon previous work imaging by adding heterodyning, which self-referenced improved precision stability, to convert frequency chirp (the second derivative respect time) into time varying intensity modulation. By also including variety possible demultiplexing techniques, this scalable recoding continuous signals.