High-Harmonic Generation In Zno Driven By Self-Compressed Mid-Infrared Pulses

Abstract

Progress in attosecond science has relied on advancements in few-cycle pulse generation technology and its application to high-order harmonic generation. Traditionally, self-phase modulation in bulk solids has been used for the compression of moderate-energy pulses, additionally exhibiting favorable dispersion properties for midinfrared (mid-IR) pulses. Here, we use the anomalous dispersion of Y3Al5O12 (YAG) to self-compress many-cycle pulses from a 50 kHz mid-IR OPA down to produce sub-three-cycle 10 μJ pulses and further use them to generate high-order harmonics in a ZnO crystal. In agreement with theoretical predictions, we observe a boost in the harmonic yield by a factor of two, and spectral broadening of above-gap harmonics, compared to longer driving pulses. The enhanced yield results from an increase in the intensity for the self-compressed pulses.

Publication Date

4-1-2018

Publication Title

Journal of the Optical Society of America B: Optical Physics

Volume

35

Issue

4

Number of Pages

A27-A31

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/JOSAB.35.000A27

Socpus ID

85044994766 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85044994766

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