Systems and methods for pump-probe spectroscopy
AssigneeNorthwestern University
InventorStephen A. Miller
Life of this patent
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Abstract
Pump-probe spectroscopy systems are provided. In an embodiment, such a system comprises an optical subsystem configured to generate a pulsed pump beam and a pulsed probe beam, the pulsed probe beam having a probe pulse frequency ω of at least 20 kHz; a detector subsystem configured to detect a sample signal induced by the pulsed pump beam and the pulsed probe beam; a chopper configured to adjust the frequency of the pump beam to ω/2, wherein the chopper is synchronized with a detector of the detector subsystem but is unsynchronized with the pulsed probe beam; and a data acquisition subsystem configured to initiate acquisition of image data by the detector based on a trigger signal derived from the pulsed pump beam.
Claims15
A pump-probe spectroscopy system comprising:
- an optical subsystem configured to generate a pulsed pump beam and a pulsed probe beam, the pulsed probe beam having a probe pulse frequency ω of at least 20 kHz;
- a detector subsystem configured to detect a sample signal induced by the pulsed pump beam and the pulsed probe beam;
- a chopper configured to adjust the frequency of the pump beam to ω/2, wherein the chopper is synchronized with a detector of the detector subsystem but is unsynchronized with the pulsed probe beam;
- and
- a data acquisition subsystem configured to initiate acquisition of image data by the detector based on a trigger signal derived from the pulsed pump beam.
A pump-probe spectroscopy system comprising:
- a processor;
- and
- a non-transitory computer-readable medium comprising instructions, that, when executed by the processor, cause the system to
- receive a first trigger signal derived from a pulsed probe beam having a probe pulse frequency ω and output the first trigger signal to a detector;
- receive a second trigger signal derived from a pulsed pump beam having a pump pulse frequency ω/2, the second trigger signal operably coupled to the detector;
- determine if the second trigger signal meets or exceeds a predetermined threshold value;
- and
- initiate acquisition of image data by the detector if the second trigger signal meets or exceeds the predetermined threshold value.
A non-transitory computer-readable medium comprising instructions, that, when executed by a processor, cause a pump-probe spectroscopy system to
- receive a first trigger signal derived from a pulsed probe beam having a probe pulse frequency ω and output the first trigger signal to a detector;
- receive a second trigger signal derived from a pulsed pump beam having a pump pulse frequency ω/2, the second trigger signal operably coupled to the detector;
- determine if the second trigger signal meets or exceeds a predetermined threshold value;
- and
- initiate acquisition of image data by the detector if the second trigger signal meets or exceeds the predetermined threshold value.
A method for performing pump-probe spectroscopy, the method comprising:
- receiving, by a processor, a first trigger signal derived from a pulsed probe beam having a probe pulse frequency ω and outputting the first trigger signal to a detector;
- receiving, by the processor, a second trigger signal derived from a pulsed pump beam having a pump pulse frequency ω/2, the second trigger signal operably coupled to the detector;
- determining, by the processor, if the second trigger signal meets or exceeds a predetermined threshold value;
- and
- initiating acquisition of image data by the detector if the second trigger signal meets or exceeds the predetermined threshold value.
Dependencies are inferred from the claim text.