Linear Gain and Gain Saturation in a Photonic Free-Electron Laser

T. Denis; Klaus J. Boller; J.H.H. Lee; P.J.M. van der Slot; Marc van Dijk

Linear Gain and Gain Saturation in a Photonic Free-Electron Laser

T. Denis, Klaus J. Boller, J.H.H. Lee, P.J.M. van der Slot, Marc van Dijk

Laser Physics & Nonlinear Optics

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Abstract

Photonic crystals are used to manipulate the generation of light, for example, stimulated emission can be enhanced. A
photonic free-electron laser (pFEL) applies this enhancement to generate widely tunable coherent Cerenkov radiation from
low energy electrons (keV) streaming through the photonic crystal. The lattice constant of the photonic crystal sets an output
frequency range that can be covered by varying the beam energy. The output power is scalable by increasing the number of
electron beams. To develop such lasers, we calculate the small signal gain of a pFEL by using the Pierce theory, originally
developed for slow-wave microwave tubes. We investigate the accuracy of the Pierce theory for pFELs by comparing the
results of the theory to the small-signal growth rate observed in particle-in-cell simulations. Results will be presented for a
low-energy (12.5 keV), low current (1A) electron beam propagating through a photonic crystal designed to operate at around
15 GHz.

Original language	English
Publication status	Published - 26 Aug 2012
Event	34th International Free-Electron Laser Conference, FEL 2012 - Nara, Japan Duration: 26 Aug 2012 → 31 Aug 2012 Conference number: 34

Conference

Conference	34th International Free-Electron Laser Conference, FEL 2012
Abbreviated title	FEL
Country/Territory	Japan
City	Nara
Period	26/08/12 → 31/08/12

Keywords

METIS-289009

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title = "Linear Gain and Gain Saturation in a Photonic Free-Electron Laser",

abstract = "Photonic crystals are used to manipulate the generation of light, for example, stimulated emission can be enhanced. Aphotonic free-electron laser (pFEL) applies this enhancement to generate widely tunable coherent Cerenkov radiation fromlow energy electrons (keV) streaming through the photonic crystal. The lattice constant of the photonic crystal sets an outputfrequency range that can be covered by varying the beam energy. The output power is scalable by increasing the number ofelectron beams. To develop such lasers, we calculate the small signal gain of a pFEL by using the Pierce theory, originallydeveloped for slow-wave microwave tubes. We investigate the accuracy of the Pierce theory for pFELs by comparing theresults of the theory to the small-signal growth rate observed in particle-in-cell simulations. Results will be presented for alow-energy (12.5 keV), low current (1A) electron beam propagating through a photonic crystal designed to operate at around15 GHz.",

keywords = "METIS-289009",

author = "T. Denis and Boller, {Klaus J.} and J.H.H. Lee and {van der Slot}, P.J.M. and {van Dijk}, Marc",

year = "2012",

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language = "English",

note = "34th International Free-Electron Laser Conference, FEL 2012, FEL ; Conference date: 26-08-2012 Through 31-08-2012",

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TY - CONF

T1 - Linear Gain and Gain Saturation in a Photonic Free-Electron Laser

AU - Denis, T.

AU - Boller, Klaus J.

AU - Lee, J.H.H.

AU - van der Slot, P.J.M.

AU - van Dijk, Marc

N1 - Conference code: 34

PY - 2012/8/26

Y1 - 2012/8/26

N2 - Photonic crystals are used to manipulate the generation of light, for example, stimulated emission can be enhanced. Aphotonic free-electron laser (pFEL) applies this enhancement to generate widely tunable coherent Cerenkov radiation fromlow energy electrons (keV) streaming through the photonic crystal. The lattice constant of the photonic crystal sets an outputfrequency range that can be covered by varying the beam energy. The output power is scalable by increasing the number ofelectron beams. To develop such lasers, we calculate the small signal gain of a pFEL by using the Pierce theory, originallydeveloped for slow-wave microwave tubes. We investigate the accuracy of the Pierce theory for pFELs by comparing theresults of the theory to the small-signal growth rate observed in particle-in-cell simulations. Results will be presented for alow-energy (12.5 keV), low current (1A) electron beam propagating through a photonic crystal designed to operate at around15 GHz.

AB - Photonic crystals are used to manipulate the generation of light, for example, stimulated emission can be enhanced. Aphotonic free-electron laser (pFEL) applies this enhancement to generate widely tunable coherent Cerenkov radiation fromlow energy electrons (keV) streaming through the photonic crystal. The lattice constant of the photonic crystal sets an outputfrequency range that can be covered by varying the beam energy. The output power is scalable by increasing the number ofelectron beams. To develop such lasers, we calculate the small signal gain of a pFEL by using the Pierce theory, originallydeveloped for slow-wave microwave tubes. We investigate the accuracy of the Pierce theory for pFELs by comparing theresults of the theory to the small-signal growth rate observed in particle-in-cell simulations. Results will be presented for alow-energy (12.5 keV), low current (1A) electron beam propagating through a photonic crystal designed to operate at around15 GHz.

KW - METIS-289009

M3 - Poster

T2 - 34th International Free-Electron Laser Conference, FEL 2012

Y2 - 26 August 2012 through 31 August 2012

ER -

Linear Gain and Gain Saturation in a Photonic Free-Electron Laser

Abstract

Conference

Keywords

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