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Title: A Laser Frequency Transverse Modulation Might Compensate for the Spectral Broadening Due to Large Electron Energy Spread in Thomson Sources

Journal Article · · Photonics
 [1];  [2];  [3];  [4]; ORCiD logo [2]; ORCiD logo [2];  [5]; ORCiD logo [6]
  1. Univ. degli Studi di Milano (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy)
  2. Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy)
  3. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Old Dominion Univ., Norfolk, VA (United States)
  4. Univ. degli Studi di Milano (Italy)
  5. Old Dominion Univ., Norfolk, VA (United States); Istituto Nazionale di Fisica Nucleare (INFN), Rome (Italy); Univ. La Sapienza, Rome (Italy)
  6. Old Dominion Univ., Norfolk, VA (United States)

Compact laser plasma accelerators generate high-energy electron beams with increasing quality. When used in inverse Compton backscattering, however, the relatively large electron energy spread jeopardizes potential applications requiring small bandwidths. We present here a novel interaction scheme that allows us to compensate for the negative effects of the electron energy spread on the spectrum, by introducing a transverse spatial frequency modulation in the laser pulse. Such a laser chirp, together with a properly dispersed electron beam, can substantially reduce the broadening of the Compton bandwidth due to the electron energy spread. We show theoretical analysis and numerical simulations for hard X-ray Thomson sources based on laser plasma accelerators.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC05-06OR23177
OSTI ID:
1871022
Report Number(s):
JLAB-ACP-22-3619; DOE/OR/23177-5504; TRN: US2306728
Journal Information:
Photonics, Vol. 9, Issue 2; ISSN 2304-6732
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

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