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Title: Generating Optical Orbital Angular Momentum in a High-Gain Free-Electron Laser at the First Harmonic

Abstract

A scheme to generate intense coherent light that carries orbital angular momentum (OAM) at the fundamental wavelength of an x-ray free-electron laser (FEL) is described. The OAM light is emitted as the dominant mode of the system until saturation provided that the helical microbunching imposed on the electron beam is larger than the shot-noise bunching that leads to self-amplified emission. Operating at the fundamental, this scheme is more efficient than alternate schemes that rely on harmonic emission, and can be applied to x-ray FELs without using external optical mode conversion elements.

Authors:
; ;  [1]
  1. Particle Beam Physics Laboratory, Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095 (United States)
Publication Date:
OSTI Identifier:
21550325
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 106; Journal Issue: 16; Other Information: DOI: 10.1103/PhysRevLett.106.164803; (c) 2011 American Institute of Physics; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRON BEAMS; EMISSION; FREE ELECTRON LASERS; NOISE; OPTICAL MODES; ORBITAL ANGULAR MOMENTUM; SATURATION; VISIBLE RADIATION; WAVELENGTHS; X RADIATION; ANGULAR MOMENTUM; BEAMS; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; LASERS; LEPTON BEAMS; OSCILLATION MODES; PARTICLE BEAMS; RADIATIONS

Citation Formats

Hemsing, E, Marinelli, A, and Rosenzweig, J B. Generating Optical Orbital Angular Momentum in a High-Gain Free-Electron Laser at the First Harmonic. United States: N. p., 2011. Web. doi:10.1103/PHYSREVLETT.106.164803.
Hemsing, E, Marinelli, A, & Rosenzweig, J B. Generating Optical Orbital Angular Momentum in a High-Gain Free-Electron Laser at the First Harmonic. United States. https://doi.org/10.1103/PHYSREVLETT.106.164803
Hemsing, E, Marinelli, A, and Rosenzweig, J B. Fri . "Generating Optical Orbital Angular Momentum in a High-Gain Free-Electron Laser at the First Harmonic". United States. https://doi.org/10.1103/PHYSREVLETT.106.164803.
@article{osti_21550325,
title = {Generating Optical Orbital Angular Momentum in a High-Gain Free-Electron Laser at the First Harmonic},
author = {Hemsing, E and Marinelli, A and Rosenzweig, J B},
abstractNote = {A scheme to generate intense coherent light that carries orbital angular momentum (OAM) at the fundamental wavelength of an x-ray free-electron laser (FEL) is described. The OAM light is emitted as the dominant mode of the system until saturation provided that the helical microbunching imposed on the electron beam is larger than the shot-noise bunching that leads to self-amplified emission. Operating at the fundamental, this scheme is more efficient than alternate schemes that rely on harmonic emission, and can be applied to x-ray FELs without using external optical mode conversion elements.},
doi = {10.1103/PHYSREVLETT.106.164803},
url = {https://www.osti.gov/biblio/21550325}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 16,
volume = 106,
place = {United States},
year = {2011},
month = {4}
}