Patent ID: 11902495
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. An ultrafast camera system comprising:
a wavelength dispersion device to disperse an optical pulse train of a pulsed laser into a wavelength spectrum;
a lens that vertically injects continuous wavelength signal dispersed into the wavelength spectrum onto a measurement line;
a timing detector that receives an optical signal including the continuous wavelength signal reflected from the measurement line, and outputs a signal intensity in the wavelength spectrum, which is corresponding to a timing error between a reference signal and the continuous wavelength signal; and
a reference signal source to output the reference signal synchronized with the pulsed laser,
wherein the optical signal including the reflected continuous wavelength signal is entered to the timing detector via the lens and the wavelength dispersion device, and
wherein the reference signal source comprises
an electrical pulse generator that generates photocurrent pulses as the reference signal by performing photoelectric transformation on the optical pulse train of the pulsed laser, or
a voltage-controlled oscillator that generates a microwave signal as the reference signal, which is frequency-locked by the optical pulse train of the pulsed laser.