Invention Grant
- Patent Title: Ultrafast, multiphoton-pump, multiphoton-probe spectroscopy
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Application No.: US16446750Application Date: 2019-06-20
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Publication No.: US10823664B2Publication Date: 2020-11-03
- Inventor: Darien James Morrow , Daniel David Kohler , John Curtis Wright
- Applicant: Wisconsin Alumni Research Foundation
- Applicant Address: US WI Madison
- Assignee: Wisconsin Alumni Research Foundation
- Current Assignee: Wisconsin Alumni Research Foundation
- Current Assignee Address: US WI Madison
- Agency: Bell & Manning, LLC
- Main IPC: G01N21/25
- IPC: G01N21/25 ; G01N21/63 ; G01N21/17

Abstract:
Methods for pump-probe spectroscopy are provided. In an embodiment, such a method comprises directing pump light having a frequency ωpump at a location in a sample to excite a transition between two quantum states of a target entity in the sample, directing probe light at the location to generate a coherent output signal having a frequency ωoutput and a wavevector koutput, and detecting the output signal as the probe light is scanned over a range of frequencies. In the method, either the transition excited by the pump light is a multiphoton transition corresponding to a frequency difference of n*ωpump, wherein n≥2; or the probe light is a set of m coherent light pulses, each coherent light pulse having a frequency ωm and a wavevector km, wherein m≥2; or both. Systems for carrying out the methods are also provided.
Public/Granted literature
- US20190391070A1 ULTRAFAST, MULTIPHOTON-PUMP, MULTIPHOTON-PROBE SPECTROSCOPY Public/Granted day:2019-12-26
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