Measuring the carrier-envelope phases of few-cycle laser pulses using the high-order harmonic spectrum from asymmetric molecules. (5th June 2015)

• Record Type: Journal Article
• Authors: Xiang, Yang; Lu, Jing; Niu, Yueping; Gong, Shangqing
• Is Part Of: Journal of physics. Volume 48:Number 13(2015:Jul. 01)
• Publication Date: 2015-06-05
• Subjects: multiharmonic generation -- strong-field processes -- femtosecond phenomena; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/0953-4075/48/13/135601
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: We propose a method for the measurement of the carrier-envelope phases of few-cycle laser pulses using the high-order harmonic spectrum from asymmetric molecules. Driven by few-cycle laser pulses, the multichannel high-order harmonic generation from asymmetric molecules is dramatically affected by the carrier-envelope phase. Usually, there are two plateaus in the high-order harmonic spectrum and the first cutoff extends almost linearly with the increase of the carrier-envelope phase in the period of . These features are not very sensitive to the internuclear distance and can be used as a tool for the measurement of the carrier-envelope phase. Both the classical and quantum-mechanical analysis are performed and the results agree well.