Abstract

UV/visible pump, mid-IR probe spectroscopy measurements based on the chirped upconversion method were expanded to the frequency region below 1800cm−1 with the nonlinear optical crystal AgGaGeS4 . Pump-probe experiments were demonstrated with GaAs and the photoreceptor protein Slr1694.

Highlights

  • Upconversion of mid-IR pulses into the visible wavelength region allows for the detection of transient spectra with a CCD camera instead of a mid-IR detector MCT

  • UV/visible pump, mid-IR probe spectroscopy measurements based on the chirped upconversion method were expanded to the frequency region below 1800cm−1 with the nonlinear optical crystal AgGaGeS4

  • The chirped pulse upconversion method has been applied to 2D spectroscopy and pump probe measurements in the frequency region above 1800cm−1 [1,2,3,4], limiting the application mainly to CO coordination compounds

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Summary

Introduction

UV/visible pump, mid-IR probe spectroscopy measurements based on the chirped upconversion method were expanded to the frequency region below 1800cm−1 with the nonlinear optical crystal AgGaGeS4. Introduction: Upconversion of mid-IR pulses into the visible wavelength region allows for the detection of transient spectra with a CCD camera instead of a mid-IR detector MCT. The chirped pulse upconversion method has been applied to 2D spectroscopy and pump probe measurements in the frequency region above 1800cm−1 [1,2,3,4], limiting the application mainly to CO coordination compounds.

Results
Conclusion

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