Flying focus and its application to plasma-based laser amplifiers

Turnbull, D.; Bahk, S-W; Begishev, I. A.; Boni, R.; Bromage, J.; Bucht, S.; Davies, A.; Franke, P.; Haberberger, D.; Katz, J.; Kessler, T. J.; Milder, A. L.; Palastro, J. P.; Shaw, J. L.; Froula, D. H.

doi:10.1088/1361-6587/aada63

Title: Flying focus and its application to plasma-based laser amplifiers

Abstract

Combining a chirped laser pulse with a chromatic lens yields a flying focus—a laser focus that moves dynamically in time. This provides control over the propagation of the peak laser intensity within an extended focal region that can be many times larger than the system’s Rayleigh length. Any velocity is achievable, including backward relative to the laser propagation direction. Previous simulation results have shown that a laser beam with a flying focus can create a counter-propagating ionization wave and subsequently pump a frequency-downshifted laser via the stimulated Raman scattering instability. Compared to a conventional Raman amplification scheme, several advantages were highlighted, including improved temperature control, plasma uniformity, and precursor growth mitigation. Here, we extend those results to demonstrate additional benefits: (1) the flying focus makes it possible for an unseeded Raman amplifier to produce a short, high-intensity beam; and (2) the flying focus minimizes collisional absorption of the pump, facilitating amplifier operation at higher plasma densities. Preliminary experiments have laid the groundwork for a high-performance plasma-based laser amplifier. The focal spot dynamics were initially confirmed at low intensity. It was subsequently demonstrated that ionization waves of arbitrary velocity can be produced at higher intensity. Here, we show a counter-propagating ionizationmore »« less

Authors:

^[1]; Bahk, S-W ^[1]; Begishev, I. A. ^[1]; Boni, R. ^[1]; Bromage, J. ^[1]; Bucht, S. ^[1]; Davies, A. ^[1]; Franke, P. ^[1]; Haberberger, D. ^[1]; Katz, J. ^[1]; Kessler, T. J. ^[1]; Milder, A. L. ^[1]; Palastro, J. P. ^[1];

^[1]; Froula, D. H. ^[1]

Univ. of Rochester, NY (United States). Lab. for Laser Energetics

Publication Date:: Wed Nov 21 00:00:00 EST 2018

Research Org.:: Univ. of Rochester, NY (United States). Lab. for Laser Energetics

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1489984

Report Number(s):: 2018-15, 1454
Journal ID: ISSN 0741-3335; 2018-15, 1454, 2411

Grant/Contract Number:: NA0001944

Resource Type:: Accepted Manuscript

Journal Name:: Plasma Physics and Controlled Fusion

Additional Journal Information:: Journal Volume: 61; Journal Issue: 1; Journal ID: ISSN 0741-3335

Publisher:: IOP Science

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; stimulated Raman scattering, flying focus, Raman amplification, plasma-based laser amplifier, ionization wave

Citation Formats


                    Turnbull, D., Bahk, S-W, Begishev, I. A., Boni, R., Bromage, J., Bucht, S., Davies, A., Franke, P., Haberberger, D., Katz, J., Kessler, T. J., Milder, A. L., Palastro, J. P., Shaw, J. L., and Froula, D. H. Flying focus and its application to plasma-based laser amplifiers.  United States: N. p., 2018. 
Web.  doi:10.1088/1361-6587/aada63.

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                    Turnbull, D., Bahk, S-W, Begishev, I. A., Boni, R., Bromage, J., Bucht, S., Davies, A., Franke, P., Haberberger, D., Katz, J., Kessler, T. J., Milder, A. L., Palastro, J. P., Shaw, J. L., & Froula, D. H. Flying focus and its application to plasma-based laser amplifiers.  United States.  https://doi.org/10.1088/1361-6587/aada63

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                    Turnbull, D., Bahk, S-W, Begishev, I. A., Boni, R., Bromage, J., Bucht, S., Davies, A., Franke, P., Haberberger, D., Katz, J., Kessler, T. J., Milder, A. L., Palastro, J. P., Shaw, J. L., and Froula, D. H. Wed .  
"Flying focus and its application to plasma-based laser amplifiers".  United States.  https://doi.org/10.1088/1361-6587/aada63.  https://www.osti.gov/servlets/purl/1489984.

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@article{osti_1489984,

  title        = {Flying focus and its application to plasma-based laser amplifiers},

  author       = {Turnbull, D. and Bahk, S-W and Begishev, I. A. and Boni, R. and Bromage, J. and Bucht, S. and Davies, A. and Franke, P. and Haberberger, D. and Katz, J. and Kessler, T. J. and Milder, A. L. and Palastro, J. P. and Shaw, J. L. and Froula, D. H.},

  abstractNote = {Combining a chirped laser pulse with a chromatic lens yields a flying focus—a laser focus that moves dynamically in time. This provides control over the propagation of the peak laser intensity within an extended focal region that can be many times larger than the system’s Rayleigh length. Any velocity is achievable, including backward relative to the laser propagation direction. Previous simulation results have shown that a laser beam with a flying focus can create a counter-propagating ionization wave and subsequently pump a frequency-downshifted laser via the stimulated Raman scattering instability. Compared to a conventional Raman amplification scheme, several advantages were highlighted, including improved temperature control, plasma uniformity, and precursor growth mitigation. Here, we extend those results to demonstrate additional benefits: (1) the flying focus makes it possible for an unseeded Raman amplifier to produce a short, high-intensity beam; and (2) the flying focus minimizes collisional absorption of the pump, facilitating amplifier operation at higher plasma densities. Preliminary experiments have laid the groundwork for a high-performance plasma-based laser amplifier. The focal spot dynamics were initially confirmed at low intensity. It was subsequently demonstrated that ionization waves of arbitrary velocity can be produced at higher intensity. Here, we show a counter-propagating ionization front moving at approximately the speed of light—the optimal result for a Raman amplifier.},

  doi          = {10.1088/1361-6587/aada63},

  journal      = {Plasma Physics and Controlled Fusion},

  number       = 1,

  volume       = 61,

  place        = {United States},

  year         = {Wed Nov 21 00:00:00 EST 2018},

  month        = {Wed Nov 21 00:00:00 EST 2018}

}

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Works referenced in this record:

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Possible origins of a time-resolved frequency shift in Raman plasma amplifiers
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Raman Amplification with a Flying Focus
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Works referencing / citing this record:

Flying focus: Spatial and temporal control of intensity for laser-based applications
journal, March 2019

Froula, D. H.; Palastro, J. P.; Turnbull, D.
Physics of Plasmas, Vol. 26, Issue 3
DOI: 10.1063/1.5086308

Laser frequency upconversion in plasmas with finite ionization rates
journal, August 2019

Qu, Kenan; Fisch, Nathaniel J.
Physics of Plasmas, Vol. 26, Issue 8
DOI: 10.1063/1.5110292

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Title: Flying focus and its application to plasma-based laser amplifiers

Abstract

Citation Formats

Fast Compression of Laser Beams to Highly Overcritical Powers journal, May 1999

Detuned Raman Amplification of Short Laser Pulses in Plasma journal, February 2000

A new method for generating ultraintense and ultrashort laser pulses journal, September 2007

Simulations of efficient Raman amplification into the multipetawatt regime journal, October 2010

Short light pulse amplification and compression by stimulated Brillouin scattering in plasmas in the strong coupling regime journal, May 2006

Experimental Evidence of Short Light Pulse Amplification Using Strong-Coupling Stimulated Brillouin Scattering in the Pump Depletion Regime journal, January 2010

Nonlinear Brillouin amplification of finite-duration seeds in the strong coupling regime journal, July 2013

Amplification of Ultrashort Laser Pulses by Brillouin Backscattering in Plasmas journal, July 2013

Amplification of Ultrashort Laser Pulses by a Resonant Raman Scheme in a Gas-Jet Plasma journal, April 2004

Reaching the Nonlinear Regime of Raman Amplification of Ultrashort Laser Pulses journal, February 2005

Development of a nanosecond-laser-pumped Raman amplifier for short laser pulses in plasma journal, December 2009

Possible origins of a time-resolved frequency shift in Raman plasma amplifiers journal, July 2012

An ultra-high gain and efficient amplifier based on Raman amplification in plasma journal, May 2017

Operating regime for a backward Raman laser amplifier in preformed plasma journal, August 2003

Backward Raman Amplification in a Plasma Waveguide journal, August 2008

Suppression of Superluminous Precursors in High-Power Backward Raman Amplifiers journal, May 2002

Inverse bremsstrahlung stabilization of noise in the generation of ultrashort intense pulses by backward Raman amplification journal, May 2004

Raman amplification in plasma: Wavebreaking and heating effects journal, November 2010

Chirped pulse Raman amplification in warm plasma: towards controlling saturation journal, August 2015

Backward Raman amplification of ionizing laser pulses journal, October 2001

Regime for a self-ionizing Raman laser amplifier journal, June 2002

Plasma Wave Seed for Raman Amplifiers journal, April 2017

Raman Amplification with a Flying Focus journal, January 2018

Spatiotemporal control of laser intensity journal, March 2018

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings journal, January 2017

Ionization waves of arbitrary velocity driven by a flying focus journal, March 2018

Ionization Waves of Arbitrary Velocity journal, May 2018

Self-guiding and stability of intense optical beams in gases undergoing ionization journal, October 1996

Generation of tunable radiation using an underdense ionization front journal, October 1991

Frequency up-shifting of laser pulses by copropagating ionization fronts journal, September 1991

Plasma Wave Seed for Raman Amplifiers text, January 2016

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings preprint, January 2017

Ionization waves of arbitrary velocity driven by a flying focus text, January 2017

Flying focus: Spatial and temporal control of intensity for laser-based applications journal, March 2019

Laser frequency upconversion in plasmas with finite ionization rates journal, August 2019

Fast Compression of Laser Beams to Highly Overcritical Powers
journal, May 1999

Detuned Raman Amplification of Short Laser Pulses in Plasma
journal, February 2000

A new method for generating ultraintense and ultrashort laser pulses
journal, September 2007

Simulations of efficient Raman amplification into the multipetawatt regime
journal, October 2010

Short light pulse amplification and compression by stimulated Brillouin scattering in plasmas in the strong coupling regime
journal, May 2006

Experimental Evidence of Short Light Pulse Amplification Using Strong-Coupling Stimulated Brillouin Scattering in the Pump Depletion Regime
journal, January 2010

Nonlinear Brillouin amplification of finite-duration seeds in the strong coupling regime
journal, July 2013

Amplification of Ultrashort Laser Pulses by Brillouin Backscattering in Plasmas
journal, July 2013

Amplification of Ultrashort Laser Pulses by a Resonant Raman Scheme in a Gas-Jet Plasma
journal, April 2004

Reaching the Nonlinear Regime of Raman Amplification of Ultrashort Laser Pulses
journal, February 2005

Development of a nanosecond-laser-pumped Raman amplifier for short laser pulses in plasma
journal, December 2009

Possible origins of a time-resolved frequency shift in Raman plasma amplifiers
journal, July 2012

An ultra-high gain and efficient amplifier based on Raman amplification in plasma
journal, May 2017

Operating regime for a backward Raman laser amplifier in preformed plasma
journal, August 2003

Backward Raman Amplification in a Plasma Waveguide
journal, August 2008

Suppression of Superluminous Precursors in High-Power Backward Raman Amplifiers
journal, May 2002

Inverse bremsstrahlung stabilization of noise in the generation of ultrashort intense pulses by backward Raman amplification
journal, May 2004

Raman amplification in plasma: Wavebreaking and heating effects
journal, November 2010

Chirped pulse Raman amplification in warm plasma: towards controlling saturation
journal, August 2015

Backward Raman amplification of ionizing laser pulses
journal, October 2001

Regime for a self-ionizing Raman laser amplifier
journal, June 2002

Plasma Wave Seed for Raman Amplifiers
journal, April 2017

Raman Amplification with a Flying Focus
journal, January 2018

Spatiotemporal control of laser intensity
journal, March 2018

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings
journal, January 2017

Ionization waves of arbitrary velocity driven by a flying focus
journal, March 2018

Ionization Waves of Arbitrary Velocity
journal, May 2018

Self-guiding and stability of intense optical beams in gases undergoing ionization
journal, October 1996

Generation of tunable radiation using an underdense ionization front
journal, October 1991

Frequency up-shifting of laser pulses by copropagating ionization fronts
journal, September 1991

Plasma Wave Seed for Raman Amplifiers
text, January 2016

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings
preprint, January 2017

Ionization waves of arbitrary velocity driven by a flying focus
text, January 2017

Flying focus: Spatial and temporal control of intensity for laser-based applications
journal, March 2019

Laser frequency upconversion in plasmas with finite ionization rates
journal, August 2019