Real-time, ultrafast framing optical imaging device with high spatial resolution

A real-time ultrafast framing optical imaging device with high spatial resolution, comprising:

• an femtosecond pulse laser system, a frequency multiplier, a wavelength splitter, a continuous illumination laser, a sampling plate, a calibration camera, a first imaging record module, and a second imaging record module;
• wherein the continuous illumination laser emits continuous signal light to illuminate an object to be measured;
• the femtosecond pulse laser system outputs an ultrashort pulse laser, the ultrashort pulse laser is used to excite an ultrafast event;
• the frequency multiplier is configured to multiply the frequency of the ultrashort pulse laser to obtain the harmonic of the ultrashort pulse, to pump parameter amplifier;
• the wavelength splitter is used to separate a fundamental wave from harmonic of the ultrashort pulse;
• the sampling plate and the calibration camera are configured to record spatial intensity distribution of pump light;
• the first imaging record module comprises a first optical time delay line, a first pump imager, a first signal imager, a first parameter amplifier, a first idle imager, and a first CCD camera;
• the harmonic of the ultrashort pulse passes through the first optical time delay line and the first pump imager and irradiates the first parameter amplifier to generate first pump light;
• the continuous signal light having illuminated the object to be measured passes through the first signal imager and irradiates the first parameter amplifier to generate a first signal light;
• the harmonic of the ultrashort pulse amplifies the continuous signal light transiently when passing through the first parameter amplifier and thereby generates a first idle light;
• when the first idle light passes through the first idle imager, information of the first idle light is recorded by the first CCD camera;
• the second imaging record module comprises a second optical time delay line, a second pump imager, a second signal imager, a second parameter amplifier, a second idle imager, and a second CCD camera;
• the first pump light having passed through the first imaging record module serves as a second pump light which passes through the second optical time delay line and the second pump imager and irradiates the second parameter amplifier;
• the first signal light having passed through the first imaging record module serves as a second signal light which passes through the second signal imager and irradiates the second parameter amplifier;
• the second pump light amplifies the second signal light transiently at the second parameter amplifier, so that a second idle light is generated;
• when the second idle light passes through the second idle imager, information of the second idle light is recorded by the second CCD camera.