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Phase-matched extreme-ultraviolet frequency-comb generation

Porat, G. ; Heyl, C. M. LU ; Schoun, S. B. ; Benko, C. ; Dörre, N. ; Corwin, K. L. and Ye, J. (2019) Ultrafast Optics XII 2019 In Proceedings of SPIE - The International Society for Optical Engineering 11370. p.94-95
Abstract

Extreme ultraviolet (XUV) laser radiation is commonly produced via high-harmonic generation (HHG) in gases. The lasers that drive this process typically operate at low pulse repetition rates (<100 kHz). Under these operating conditions, the plasma generated by each laser pulse clears the generation volume before the next pulse arrives. Therefore, each laser pulse interacts with fresh plasma-free gas, where phase-matching facilitates efficient HHG. However, applications requiring high counting statistics or frequency-comb precision make high repetition rates (>10 MHz) necessary. Unfortunately, at high repetition rates, plasma accumulates in the XUV generation region and prevents phase-matching, resulting in low HHG efficiency. We... (More)

Extreme ultraviolet (XUV) laser radiation is commonly produced via high-harmonic generation (HHG) in gases. The lasers that drive this process typically operate at low pulse repetition rates (<100 kHz). Under these operating conditions, the plasma generated by each laser pulse clears the generation volume before the next pulse arrives. Therefore, each laser pulse interacts with fresh plasma-free gas, where phase-matching facilitates efficient HHG. However, applications requiring high counting statistics or frequency-comb precision make high repetition rates (>10 MHz) necessary. Unfortunately, at high repetition rates, plasma accumulates in the XUV generation region and prevents phase-matching, resulting in low HHG efficiency. We use high-temperature gas mixtures to increase the gas translational velocity, thus reduce plasma accumulation and facilitate phase-matching. We experimentally achieve phase-matched HHG at a repetition rate of 77 MHz, generating record power of ~2 mW at 97 nm and ~0.9 mW at 67 nm.

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author
; ; ; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Extreme ultraviolet frequency comb, High harmonic generation, Nonlinear optics, Ultrafast optics
host publication
Ultrafast Optics XII
series title
Proceedings of SPIE - The International Society for Optical Engineering
editor
Jovanovic, Igor ; Resan, Bojan ; Osvay, Karoly and Coslovich, Giacomo
volume
11370
pages
2 pages
publisher
SPIE
conference name
Ultrafast Optics XII 2019
conference location
Bol, Croatia
conference dates
2019-10-06 - 2019-10-11
external identifiers
  • scopus:85124506941
ISSN
0277-786X
1996-756X
ISBN
9781510635128
language
English
LU publication?
yes
id
d3450a97-0f45-4ec9-9ecc-a1a04ae1fed0
date added to LUP
2022-04-05 13:51:12
date last changed
2024-03-25 23:23:27
@inproceedings{d3450a97-0f45-4ec9-9ecc-a1a04ae1fed0,
  abstract     = {{<p>Extreme ultraviolet (XUV) laser radiation is commonly produced via high-harmonic generation (HHG) in gases. The lasers that drive this process typically operate at low pulse repetition rates (&lt;100 kHz). Under these operating conditions, the plasma generated by each laser pulse clears the generation volume before the next pulse arrives. Therefore, each laser pulse interacts with fresh plasma-free gas, where phase-matching facilitates efficient HHG. However, applications requiring high counting statistics or frequency-comb precision make high repetition rates (&gt;10 MHz) necessary. Unfortunately, at high repetition rates, plasma accumulates in the XUV generation region and prevents phase-matching, resulting in low HHG efficiency. We use high-temperature gas mixtures to increase the gas translational velocity, thus reduce plasma accumulation and facilitate phase-matching. We experimentally achieve phase-matched HHG at a repetition rate of 77 MHz, generating record power of ~2 mW at 97 nm and ~0.9 mW at 67 nm.</p>}},
  author       = {{Porat, G. and Heyl, C. M. and Schoun, S. B. and Benko, C. and Dörre, N. and Corwin, K. L. and Ye, J.}},
  booktitle    = {{Ultrafast Optics XII}},
  editor       = {{Jovanovic, Igor and Resan, Bojan and Osvay, Karoly and Coslovich, Giacomo}},
  isbn         = {{9781510635128}},
  issn         = {{0277-786X}},
  keywords     = {{Extreme ultraviolet frequency comb; High harmonic generation; Nonlinear optics; Ultrafast optics}},
  language     = {{eng}},
  pages        = {{94--95}},
  publisher    = {{SPIE}},
  series       = {{Proceedings of SPIE - The International Society for Optical Engineering}},
  title        = {{Phase-matched extreme-ultraviolet frequency-comb generation}},
  volume       = {{11370}},
  year         = {{2019}},
}