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Title: Observation of backward high-harmonic emission from solids

Abstract

Here, we experimentally demonstrate backward emission of high-harmonics of a near-infrared laser from MgO and Si crystals in the direction of specular reflection. We show that the variation of the high-harmonic power with the angle of incidence can be predicted with nonlinear reflection coefficients derived originally for perturbative nonlinearities. A comparison of transmission and reflection geometries suggests that backward-propagating high-harmonics are an excellent reference to study nonlinear propagation of intense light in solids. Backward emission will enable phase matching of the high-harmonic beam and the integration of the functionalities of extended gas-phase high-harmonic beamlines into a single optical element. The potential to achieve phase matching paves the way to solid-state based high-harmonic sources with higher flux than the best transmission-based sources, where high-harmonics are strongly absorbed by the crystal itself.

Authors:
; ; ; ;
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1435882
Alternate Identifier(s):
OSTI ID: 1458536
Grant/Contract Number:  
Early Career Research Program; AC02-76SF00515; FA9550-14-1-0108
Resource Type:
Published Article
Journal Name:
Optics Express
Additional Journal Information:
Journal Name: Optics Express Journal Volume: 26 Journal Issue: 9; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Nonlinear optics at surfaces; Multiharmonic generation; Optical nonlinearities of condensed matter

Citation Formats

Vampa, G., You, Y. S., Liu, H., Ghimire, S., and Reis, D. A. Observation of backward high-harmonic emission from solids. United States: N. p., 2018. Web. https://doi.org/10.1364/OE.26.012210.
Vampa, G., You, Y. S., Liu, H., Ghimire, S., & Reis, D. A. Observation of backward high-harmonic emission from solids. United States. https://doi.org/10.1364/OE.26.012210
Vampa, G., You, Y. S., Liu, H., Ghimire, S., and Reis, D. A. Thu . "Observation of backward high-harmonic emission from solids". United States. https://doi.org/10.1364/OE.26.012210.
@article{osti_1435882,
title = {Observation of backward high-harmonic emission from solids},
author = {Vampa, G. and You, Y. S. and Liu, H. and Ghimire, S. and Reis, D. A.},
abstractNote = {Here, we experimentally demonstrate backward emission of high-harmonics of a near-infrared laser from MgO and Si crystals in the direction of specular reflection. We show that the variation of the high-harmonic power with the angle of incidence can be predicted with nonlinear reflection coefficients derived originally for perturbative nonlinearities. A comparison of transmission and reflection geometries suggests that backward-propagating high-harmonics are an excellent reference to study nonlinear propagation of intense light in solids. Backward emission will enable phase matching of the high-harmonic beam and the integration of the functionalities of extended gas-phase high-harmonic beamlines into a single optical element. The potential to achieve phase matching paves the way to solid-state based high-harmonic sources with higher flux than the best transmission-based sources, where high-harmonics are strongly absorbed by the crystal itself.},
doi = {10.1364/OE.26.012210},
journal = {Optics Express},
number = 9,
volume = 26,
place = {United States},
year = {2018},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1364/OE.26.012210

Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

Figures / Tables:

Fig. 1 Fig. 1: High-harmonic spectra measured in the specular reflection direction, from (a) a (100)- oriented MgO crystal with 1.32 µm laser excitation and (b) a (100)-oriented Si crystal with 2.1 µm laser excitation. In (a), the driver is s-polarized (red and blue lines), or p-polarized (black line). The spectrum formore » p-polarization has been multiplied by 2 to account for the lower reflectivity of the grating. The estimated intensities of the driver are 23 and 33 TW/cm2 (corresponding to 90 and 130 µJ driving-pulse energy). Harmonic power is normalized to the 17th order at the highest intensity. The angle of incidence is 45°. In (b), the angle of incidence is 46°, the driving laser is p-polarized, and the vacuum intensity is 4.2 TW/cm2. The highest detected harmonic in the case of Si is limited by the detection range of the VIS-UV spectrometer used.« less

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    Works referencing / citing this record:

    Interferometry of dipole phase in high harmonics from solids
    journal, December 2018


    High-harmonic generation from solids
    journal, November 2018


    Non-perturbative generation of DUV/VUV harmonics from crystal surfaces at 108 MHz repetition rate
    journal, January 2018


    Nonlinear propagation effects in high harmonic generation in reflection and transmission from gallium arsenide
    journal, January 2018


    High-harmonic generation in solids driven by counter-propagating pulses
    journal, January 2019

    • Korobenko, A.; Hammond, T. J.; Zhang, C.
    • Optics Express, Vol. 27, Issue 22
    • DOI: 10.1364/oe.27.032630

    Characterization of high-harmonic emission from ZnO up to 11  eV pumped with a Cr:ZnS high-repetition-rate source
    journal, January 2019

    • Vampa, Giulio; Vasilyev, Sergey; Liu, Hanzhe
    • Optics Letters, Vol. 44, Issue 2
    • DOI: 10.1364/ol.44.000259

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