Coherent Two-Dimensional and Broadband Electronic Spectroscopies

Area of Science:

• Physical Chemistry
• Spectroscopy
• Ultrafast Dynamics

Background:

• Coherent broadband spectroscopy and nonlinear multidimensional spectroscopy have become essential tools for studying ultrafast processes.
• Advances in femtosecond laser technology have enabled unprecedented resolution in observing energy transfer and carrier relaxation.
• These spectroscopic methods provide critical insights into complex biological and material systems.

Purpose of the Study:

• To provide a theoretical framework for coherent broadband and two-dimensional electronic spectroscopy (2DES).
• To discuss experimental approaches, data processing, and analysis best practices for 2DES.
• To review applications of these techniques in understanding photoinitiated ultrafast processes.

Main Methods:

• Theoretical framework of coherent broadband spectroscopy.
• Theoretical framework of two-dimensional electronic spectroscopy (2DES).
• Review of experimental techniques, data processing, and analysis for 2DES.

Main Results:

• Detailed theoretical underpinnings of coherent broadband and 2DES are presented.
• Experimental considerations and best practices for 2DES are outlined.
• Numerous examples showcase the application of these spectroscopies in diverse systems.

Conclusions:

• Coherent broadband and 2DES are powerful techniques for elucidating ultrafast phenomena.
• These methods have led to improved design principles for artificial systems.
• Future perspectives highlight the expanding potential of these experimental techniques.