Spectral modulation of third-harmonic generation by molecular alignment and preformed plasma
Li Min1, Li An-Yuan1, He Bo-Qu2, Yuan Shuai1, Zeng He-Ping1, 2, †, 
Experimental setup. Blue path represents the pump pulse, which is focused to align molecules; red path denotes the probe pulse used to produce TH generation. DM: dichroic mirror, used to combine pump and probe pulse. Microscope objective and CCD are used to image and capture the laser filament. Spectrometer is used to measure the spectrum of TH generation.
