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US 2012/0236305 A1Published application
Multidimensional Spectrometer
AssigneeWisconsin Alumni Research Foundation
InventorsMartin T. Zanni, Peter Hamm, Jan Helbing
Life of this patent
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Abstract
A multidimensional spectrometer encodes frequency information into laser pulses so that a frequency insensitive detector may be used to collect data for a multi-dimensional spectrograph only from intensity information and knowledge of a modulation providing the encoding. In one embodiment the frequency encoding may be done by a conventional interferometer greatly simplifying construction of the spectrometer.
Claims21
A multi-dimensional spectrometer comprising:
- a first spectral modulator producing at least one first modulated light pulse passing along a first optical path;
- a second spectral modulator producing at least one second modulated light pulse passing along a second optical path;
- a sample volume positioned at an intersection of the first and second light pulses;
- a detector positioned to measure an intensity of at least one of the first and second light pulses after passage through the sample volume;
- and
- a controller communicating with the first and second spectral modulator and operating to collect intensity and modulation information during a modulation of the first and second light pulses so as to permit generation of a two dimensional spectrum of a sample in the sample volume solely from the intensity and modulation information.
3 more elements
A method of generating a multi-dimensional spectrograph comprising the steps of:
- (a) generating at least one first light pulse passing along a first optical path;
- (b) generating at least one second light pulse passing along a second optical path intersecting the first optical path at a sample volume holding a material to be analyzed;
- (c) detecting an intensity of at least one of the first and second light pulses after passage through the material;
- and
- (d) modulating the first and second light pulses to permit generation of a two dimensional spectrum of a sample in the sample volume solely from the detected intensity and modulation information.
2 more elements
Dependencies are inferred from the claim text.