PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
Using two multiple-cycle optical pulses with incommensurate frequencies (e.g., at wavelengths 1400 nm and 800 nm) in a collinear configuration, a cascaded background-free four-wave mixing EUV field can be realized because the EUV pulse produced by phase-matched high order harmonic generation in combination with the other two optical pulses creates a third-order nonlinear polarisation which drives a phase-matched four-wave mixing process along the propagating direction. The four-wave mixing emission can be manipulated by varying the delay of the second optical pulse. The phase-matching of the four-wave mixing process together with the relatively long interaction path combine to produce a strong output signal which leads to an enhanced signal-noise ratio of the Fourier-transformed signal used to obtain the two-dimensional cross correlation spectrum. Some key features of this two-dimensional spectroscopy, such as the on-axis and off-axis peaks, can lead to the determination of interaction pathways of real dipole-allowed transitions and virtual transitions in the EUV.
Hung Dai Nguyen,Khuong Ba Dinh, andLap Van Dao
"Multi-dimensional spectroscopy with cascade four-wave mixing in the extreme ultraviolet", Proc. SPIE 11497, Ultrafast Nonlinear Imaging and Spectroscopy VIII, 114970F (20 August 2020); https://doi.org/10.1117/12.2566314
ACCESS THE FULL ARTICLE
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
The alert did not successfully save. Please try again later.
Hung Dai Nguyen, Khuong Ba Dinh, Lap Van Dao, "Multi-dimensional spectroscopy with cascade four-wave mixing in the extreme ultraviolet," Proc. SPIE 11497, Ultrafast Nonlinear Imaging and Spectroscopy VIII, 114970F (20 August 2020); https://doi.org/10.1117/12.2566314