The invention relates to a method and a device, which conducts super-fast time identification and measurement to seed optical
signal. The method essentially includes the following steps: (1) super short
laser pulse produced by a
laser pulse light source is split into two paths by an
optical beam splitting
system after
energy regulation, collimated beam narrowing and spatial filtering
system optimization and selection, among which one path passes a time
delay control system and a parameter pump pulse
optical path, and the other path passes a seed exciting pulse
optical path; (2) the collected seed optical
signal and the pump pulse incident into a parameter amplifying
system, so that the parameter amplifying system conducts
ultra fast amplification to the sample seed optical
signal under a linear amplifying state; (3) a parameter amplifying signal detecting system is used to detect,
record, refer to and revise the signal, and give corresponding detecting result to
ultra fast spectra analysis and time identification and measurement of amplifying the seed optical signal. The invention can amplify the weak seed optical signal and realize detection of
ultra fast time identification, and is a novel detecting method in the field of ultra fast
spectroscopy.