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Title: Enabling high repetition rate nonlinear THz science with a kilowatt-class sub-100 fs laser source

Abstract

Manipulating the atomic and electronic structure of matter with strong terahertz (THz) fields while probing the response with ultrafast pulses at x-ray free electron lasers (FELs) has offered unique insights into a multitude of physical phenomena in solid state and atomic physics. Recent upgrades of x-ray FEL facilities are pushing to much higher repetition rates, enabling unprecedented signal-to-noise ratio for pump probe experiments. This requires the development of suitable THz pump sources that are able to deliver intense pulses at compatible repetition rates. Here we present a high-power laser-driven THz source based on optical rectification in LiNbO3 using tilted pulse front pumping. Our source is driven by a kilowatt-level Yb:YAG amplifier system operating at 100 kHz repetition rate and employing nonlinear spectral broadening and recompression to achieve sub-100 fs pulses with pulse energies up to 7 mJ that are necessary for high THz conversion efficiency and peak field strength. We demonstrate a maximum of 144 mW average THz power (1.44 μJ pulse energy), consisting of single-cycle pulses centered at 0.6 THz with a peak electric field strength exceeding 150 kV/cm. These high field pulses open up a range of possibilities for nonlinear time-resolved THz experiments at unprecedented rates.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1630379
Alternate Identifier(s):
OSTI ID: 1647638
Grant/Contract Number:  
AC02-76SF00515; 2015-SLAC-100238
Resource Type:
Published Article
Journal Name:
Optics Express
Additional Journal Information:
Journal Name: Optics Express Journal Volume: 28 Journal Issue: 11; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America (OSA)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Kramer, Patrick L., Windeler, Matthew R., Mecseki, Katalin, Champenois, Elio G., Hoffmann, Matthias C., and Tavella, Franz. Enabling high repetition rate nonlinear THz science with a kilowatt-class sub-100 fs laser source. United States: N. p., 2020. Web. doi:10.1364/oe.389653.
Kramer, Patrick L., Windeler, Matthew R., Mecseki, Katalin, Champenois, Elio G., Hoffmann, Matthias C., & Tavella, Franz. Enabling high repetition rate nonlinear THz science with a kilowatt-class sub-100 fs laser source. United States. doi:https://doi.org/10.1364/oe.389653
Kramer, Patrick L., Windeler, Matthew R., Mecseki, Katalin, Champenois, Elio G., Hoffmann, Matthias C., and Tavella, Franz. Thu . "Enabling high repetition rate nonlinear THz science with a kilowatt-class sub-100 fs laser source". United States. doi:https://doi.org/10.1364/oe.389653.
@article{osti_1630379,
title = {Enabling high repetition rate nonlinear THz science with a kilowatt-class sub-100 fs laser source},
author = {Kramer, Patrick L. and Windeler, Matthew R. and Mecseki, Katalin and Champenois, Elio G. and Hoffmann, Matthias C. and Tavella, Franz},
abstractNote = {Manipulating the atomic and electronic structure of matter with strong terahertz (THz) fields while probing the response with ultrafast pulses at x-ray free electron lasers (FELs) has offered unique insights into a multitude of physical phenomena in solid state and atomic physics. Recent upgrades of x-ray FEL facilities are pushing to much higher repetition rates, enabling unprecedented signal-to-noise ratio for pump probe experiments. This requires the development of suitable THz pump sources that are able to deliver intense pulses at compatible repetition rates. Here we present a high-power laser-driven THz source based on optical rectification in LiNbO3 using tilted pulse front pumping. Our source is driven by a kilowatt-level Yb:YAG amplifier system operating at 100 kHz repetition rate and employing nonlinear spectral broadening and recompression to achieve sub-100 fs pulses with pulse energies up to 7 mJ that are necessary for high THz conversion efficiency and peak field strength. We demonstrate a maximum of 144 mW average THz power (1.44 μJ pulse energy), consisting of single-cycle pulses centered at 0.6 THz with a peak electric field strength exceeding 150 kV/cm. These high field pulses open up a range of possibilities for nonlinear time-resolved THz experiments at unprecedented rates.},
doi = {10.1364/oe.389653},
journal = {Optics Express},
number = 11,
volume = 28,
place = {United States},
year = {2020},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: https://doi.org/10.1364/oe.389653

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