Ultrabroadband two-dimensional electronic spectroscopy in the pump-probe geometry using conventional optics.
Opt Lett
; 49(8): 2065-2068, 2024 Apr 15.
Article
in En
| MEDLINE
| ID: mdl-38621077
ABSTRACT
We report ultrabroadband two-dimensional electronic spectroscopy (2D ES) measurements obtained in the pump-probe geometry using conventional optics. A phase-stabilized Michelson interferometer provides the pump-pulse delay interval, τ1, necessary to obtain the excitation-frequency dimension. Spectral resolution of the probe beam provides the detection-frequency dimension, ω3. The interferometer incorporates active phase stabilization via a piezo stage and feedback from interference of a continuous-wave reference laser detected in quadrature. To demonstrate the method, we measured a well-characterized laser dye sample and obtained the known peak structure. The vibronic peaks are modulated as a function of the waiting time, τ2, by vibrational wave packets. The interferometer simplifies ultrabroadband 2D ES measurements and analysis.
Full text:
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Database:
MEDLINE
Language:
En
Journal:
Opt Lett
Year:
2024
Type:
Article