Patent ID: 11965827
Assignee: EAST CHINA NORMAL UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A hyperspectral imaging apparatus, comprising:
a light source assembly, configured to provide a mid-infrared ultrashort pulse as pump light and a near-infrared ultrashort pulse as signal light, the mid-infrared ultrashort pulse and the near-infrared ultrashort pulse being synchronous precisely in time domain;
a time-stretching component, configured to subject the signal light to optical time-stretching to broaden a pulse width of the signal light and separate light components of different wavelengths in the signal light in the time domain;
a light absorption component, comprising a target sample, and configured to receive the time-stretched signal light and absorb a light component with a certain wavelength of the time-stretched signal light by the target sample;
a time delayer, configured to receive the pump light and adjust the time when the pump light reaches a silicon-based camera;
a first dichroscope, configured to spatially combine the signal light from the light absorption component and the pump light from the time delayer in such a way that a light spot formed by the pump light wraps a light spot formed by the signal light;
a silicon-based camera, configured to receive the combined light, detect the signal light through non-degenerate two-photon absorption of the signal light thereon under the action of the pump light, and acquire hyperspectral imaging data; and
a controlling and acquiring component, connected with the time delayer and the silicon-based camera, and configured to control the time delayer to adjust the time when the pump light reaches the silicon-based camera, receive the hyperspectral imaging data from the silicon-based camera, and acquiring an image of the target sample.