Photon acceleration by laser wakefields

C.D. Murphy, R. M. G. M. Trines, Robert Bingham, K. Lancaster, O. Chekhlov, P. Norreys, Jose Tito Mendonca, L.O. Silva, S.P.D. Mangles, C. Kamperidis, A Thomas, K. Krushelnick, Z. Najmudin

Research output: Contribution to conferenceAbstract

Abstract

In recent times, theory and simulation have been able to reproduce photon acceleration from wakefields where light is up- shifted in frequency by a moving refractive index gradient. The effect has been considered as a possible method of diagnosis of a wakefield such as the one postulated for a compact electron accelerator. Here we present further observations of spectral modulation caused by a laser-produced wakefield. In our experiments, the Astra laser at the Rutherford Appleton Laboratory was focused into jet of helium. Between 300mJ and 600mJ of laser energy was delivered into a 25 micron focal spot in pulses between 50fs and 200fs. The spectrum of the transmitted light was measured. The lower intensity laser pulse allowed a linear regime to be investigated. A photon kinetic code has been implemented to model the experiment. The feasibility of using this effect as a wakefield diagnostic will be discussed.

Conference

Conference2006 48th Annual Meeting of the Division of Plasma Physics
CountryUnited States
CityPhiladelphia
Period31/10/0631/10/06

Fingerprint

photons
lasers
electron accelerators
pulses
helium
refractivity
modulation
gradients
kinetics
simulation
energy

Keywords

  • photon acceleration
  • laser wakefields

Cite this

Murphy, C. D., Trines, R. M. G. M., Bingham, R., Lancaster, K., Chekhlov, O., Norreys, P., ... Najmudin, Z. (2006). Photon acceleration by laser wakefields. Abstract from 2006 48th Annual Meeting of the Division of Plasma Physics, Philadelphia, United States.
Murphy, C.D. ; Trines, R. M. G. M. ; Bingham, Robert ; Lancaster, K. ; Chekhlov, O. ; Norreys, P. ; Mendonca, Jose Tito ; Silva, L.O. ; Mangles, S.P.D. ; Kamperidis, C. ; Thomas, A ; Krushelnick, K. ; Najmudin, Z. / Photon acceleration by laser wakefields. Abstract from 2006 48th Annual Meeting of the Division of Plasma Physics, Philadelphia, United States.
@conference{88ecfe7e59794c4b85b40b4676c38143,
title = "Photon acceleration by laser wakefields",
abstract = "In recent times, theory and simulation have been able to reproduce photon acceleration from wakefields where light is up- shifted in frequency by a moving refractive index gradient. The effect has been considered as a possible method of diagnosis of a wakefield such as the one postulated for a compact electron accelerator. Here we present further observations of spectral modulation caused by a laser-produced wakefield. In our experiments, the Astra laser at the Rutherford Appleton Laboratory was focused into jet of helium. Between 300mJ and 600mJ of laser energy was delivered into a 25 micron focal spot in pulses between 50fs and 200fs. The spectrum of the transmitted light was measured. The lower intensity laser pulse allowed a linear regime to be investigated. A photon kinetic code has been implemented to model the experiment. The feasibility of using this effect as a wakefield diagnostic will be discussed.",
keywords = "photon acceleration, laser wakefields",
author = "C.D. Murphy and Trines, {R. M. G. M.} and Robert Bingham and K. Lancaster and O. Chekhlov and P. Norreys and Mendonca, {Jose Tito} and L.O. Silva and S.P.D. Mangles and C. Kamperidis and A Thomas and K. Krushelnick and Z. Najmudin",
year = "2006",
month = "10",
language = "English",
note = "2006 48th Annual Meeting of the Division of Plasma Physics ; Conference date: 31-10-2006 Through 31-10-2006",

}

Murphy, CD, Trines, RMGM, Bingham, R, Lancaster, K, Chekhlov, O, Norreys, P, Mendonca, JT, Silva, LO, Mangles, SPD, Kamperidis, C, Thomas, A, Krushelnick, K & Najmudin, Z 2006, 'Photon acceleration by laser wakefields' 2006 48th Annual Meeting of the Division of Plasma Physics, Philadelphia, United States, 31/10/06 - 31/10/06, .

Photon acceleration by laser wakefields. / Murphy, C.D.; Trines, R. M. G. M.; Bingham, Robert; Lancaster, K.; Chekhlov, O.; Norreys, P.; Mendonca, Jose Tito; Silva, L.O.; Mangles, S.P.D.; Kamperidis, C.; Thomas, A; Krushelnick, K.; Najmudin, Z.

2006. Abstract from 2006 48th Annual Meeting of the Division of Plasma Physics, Philadelphia, United States.

Research output: Contribution to conferenceAbstract

TY - CONF

T1 - Photon acceleration by laser wakefields

AU - Murphy, C.D.

AU - Trines, R. M. G. M.

AU - Bingham, Robert

AU - Lancaster, K.

AU - Chekhlov, O.

AU - Norreys, P.

AU - Mendonca, Jose Tito

AU - Silva, L.O.

AU - Mangles, S.P.D.

AU - Kamperidis, C.

AU - Thomas, A

AU - Krushelnick, K.

AU - Najmudin, Z.

PY - 2006/10

Y1 - 2006/10

N2 - In recent times, theory and simulation have been able to reproduce photon acceleration from wakefields where light is up- shifted in frequency by a moving refractive index gradient. The effect has been considered as a possible method of diagnosis of a wakefield such as the one postulated for a compact electron accelerator. Here we present further observations of spectral modulation caused by a laser-produced wakefield. In our experiments, the Astra laser at the Rutherford Appleton Laboratory was focused into jet of helium. Between 300mJ and 600mJ of laser energy was delivered into a 25 micron focal spot in pulses between 50fs and 200fs. The spectrum of the transmitted light was measured. The lower intensity laser pulse allowed a linear regime to be investigated. A photon kinetic code has been implemented to model the experiment. The feasibility of using this effect as a wakefield diagnostic will be discussed.

AB - In recent times, theory and simulation have been able to reproduce photon acceleration from wakefields where light is up- shifted in frequency by a moving refractive index gradient. The effect has been considered as a possible method of diagnosis of a wakefield such as the one postulated for a compact electron accelerator. Here we present further observations of spectral modulation caused by a laser-produced wakefield. In our experiments, the Astra laser at the Rutherford Appleton Laboratory was focused into jet of helium. Between 300mJ and 600mJ of laser energy was delivered into a 25 micron focal spot in pulses between 50fs and 200fs. The spectrum of the transmitted light was measured. The lower intensity laser pulse allowed a linear regime to be investigated. A photon kinetic code has been implemented to model the experiment. The feasibility of using this effect as a wakefield diagnostic will be discussed.

KW - photon acceleration

KW - laser wakefields

UR - http://absimage.aps.org/image/DPP06/MWS_DPP06-2006-001308.pdf

UR - http://meetings.aps.org/Meeting/DPP06/Session/GO1.9

M3 - Abstract

ER -

Murphy CD, Trines RMGM, Bingham R, Lancaster K, Chekhlov O, Norreys P et al. Photon acceleration by laser wakefields. 2006. Abstract from 2006 48th Annual Meeting of the Division of Plasma Physics, Philadelphia, United States.