System and method for infrared spectrometry
AssigneeInstitut National De La Recherche Scientifique
InventorsFrançois Legaré, Bruno Schmidt
Life of this patent
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Abstract
A system and a method for infrared spectrometry, the method comprising multiphoton absorption with a material positioned in the Fourier plane of a 2f setup, the material being one of: i) a visible light sensitive, high band gap material and ii) an IR sensitive material. The system comprises one of: i) a visible light sensitive, high band gap material and ii) an IR sensitive material, positioned in the Fourier plane of a 2f setup.
Claims19
A method for detecting IR light, comprising multiphoton absorption with a first material positioned in the Fourier plane of a 2f setup, wherein the first material is a high band gap material, said method comprising nonlinear interaction of IR light with the high band gap material, causing multiphoton absorption within the high band gap material, thereby exciting the high band gap material above band gap.
Use of one of:
- i) a visible light sensitive, high band gap material and ii) an IR sensitive material, for detecting IR light, comprising multiphoton absorption in the Fourier plane of a 2f setup, wherein the first material is a high band gap material, said method comprising nonlinear interaction of IR light with the high band gap material, causing multiphoton absorption within the high band gap material, thereby exciting the high band gap material above band gap.
A method for characterization of an IR pulsed laser spectrum, comprising positioning a high band gap detector in the Fourier plane of a 2f setup for nonlinear interaction of IR pulsed laser beams with the high band gap material, causing multiphoton absorption within the high band gap material, thereby exciting the high band gap material above the band gap.
An infrared spectrometer, comprising, in the Fourier plane of a 2f setup, one of:
- i) a visible light detector and ii) a IR light detector, a first high band gap material being positioned in the Fourier plane of the 2f setup, said method comprising nonlinear interaction of IR light with the first high band gap material, causing multiphoton absorption within the first high band gap material, thereby exciting the first high band gap material above band gap.
Dependencies are inferred from the claim text.