Patent ID: 11965827
Assignee: ROI OPTOELECTRONICS TECHNOLOGY CO, LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A hyperspectral imaging method, comprising:
providing 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;
subjecting 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;
directing the time-stretched signal light to a target sample to be detected;
directing the pump light to a time delayer to adjust the time when the pump light reaches a silicon-based camera;
spatially combining the time-stretched signal light from the target sample with the pump light from the time delayer;
directing the combined light to a silicon-based camera where the signal light is detected through non-degenerate two-photon absorption of the signal light under the action of the pump light to acquire hyperspectral imaging data; and
obtaining an image of the target sample based on the hyperspectral imaging data.