On-the-Fly Control of High-Harmonic Generation Using a Structured Pump Beam

Liran Hareli, Lilya Lobachinsky, Georgiy Shoulga, Yaniv Eliezer, Linor Michaeli, Alon Bahabad

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate experimentally a relatively simple yet powerful all-optical enhancement and control technique for high harmonic generation. This is achieved by using as a pump beam two different spatial optical modes interfering together to realize tunable periodic quasi-phase matching of the interaction. With this technique, we demonstrate on-the-fly quasi-phase matching of harmonic orders 29-41 at ambient gas pressure levels of 50 and 100 Torr, where an up to 100-fold enhancement of the emission is observed. The technique is scalable to different harmonic orders and ambient pressure conditions.

Original languageEnglish
Article number183902
JournalPhysical Review Letters
Volume120
Issue number18
DOIs
StatePublished - 4 May 2018

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