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

16 Scopus citations


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
Issue number18
StatePublished - 4 May 2018


FundersFunder number
Wolfson Foundation
Israel Science Foundation1233/13


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