Patent ID: 11965779
Assignee: TIMEGATE INSTRUMENTS OY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An apparatus for measuring time-gated Raman spectrum, the apparatus comprising:
a light source for generating a pulse of light towards a target, wherein the target will subsequently emit an optical radiation comprising at least a first portion and a second portion;
a sensor arrangement for measuring the intensity of the optical radiation; and
a controller operatively coupled to the light source and the sensor arrangement; wherein the sensor arrangement comprises:
at least one optical delay element to provide a time delay to the first portion of the emitted optical radiation, wherein the second portion of the emitted optical radiation bypasses the at least one optical delay element;
an optical spectral disperser to disperse the delayed first portion and the second portion of the emitted optical radiation into a dispersed radiation having a plurality of wavelengths, wherein each wavelength of the dispersed radiation is split into an angularly separate direction, and wherein the dispersed radiation of each portion exits the optical spectral disperser with predetermined relative delays; and
a sensor element configured to receive each wavelength of the dispersed radiation on a different spatial region thereof, and to measure light intensity associated with each wavelength of the dispersed radiation;
and wherein the controller is configured to record the measured light intensity associated with each wavelength of the dispersed radiation measured by the sensor element to form a time-resolved optical spectrum.