Eric B. Szarmes

University of Hawaiʻi at Mānoa

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J. M. J. Madey

University of Hawaiʻi at Mānoa

Karl D. Straub

University of Arkansas for Medical Sciences

S. Benson

Thomas Jefferson National Accelerator Facility

Jeremy M. D. Kowalczyk

University of Hawaiʻi at Mānoa

Michael R. Hadmack

University of Hawaiʻi at Mānoa

G.A. Barnett

Duke University

Sergey Gorelik

Agency for Science, Technology and Research

ЕН

Е. Н. Чесноков

Institute of Chemical Kinetics and Combustion

Bryce Jacobson

SLAC National Accelerator Laboratory

W.-S. Fann

Stanford University

Cooperative Institutions

Duke University

University of Hawaiʻi at Mānoa

Stanford University

Concern Granit-Electron (Russia)

University of Hawaii System

Siberian Branch of the Russian Academy of Sciences

Russian Academy of Sciences

Rockwell Automation (United States)

Institute of Chemical Kinetics and Combustion

Duke Medical Center

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The Michelson resonator free-electron laser. I. Passive mode structure and mode decay

IEEE Journal of Quantum Electronics (1993)

Eric B. Szarmes J. M. J. Madey

A general analysis of the evolution of phase locking in an RF linac-driven Michelson resonator free-electron laser (FEL) is presented. By providing a delay of one RF period in the secondary arm of the interferometer, successive optical pulses can be coupled at the beamsplitter, so that they build up from noise with a definite phase relationship. Phase locking is described in terms of longitudinal mode decay by extracting the mode losses directly from the passive frequency response of the resonator. The analyses predict significant mode structure simplification in microsecond macropulses, so that high-resolution spectroscopy is feasible on RF linac-driven FELs. Simulations of the perfectly tuned Michelson resonator FEL are described from spontaneous radiation to saturation, using a one-dimensional pulse propagation code. Excellent agreement with the analytical results in the small-signal regime is demonstrated.< >

Microsecond

Free-electron laser

Free electron model

Beam splitter

10.1109/3.199300

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Citations (10)

Electron bunch energy and phase feed-forward stabilization system for the Mark V RF-linac free-electron laser

Review of Scientific Instruments (2013)

Michael R. Hadmack Bryce Jacobson Jeremy M. D. Kowalczyk Barry R. Lienert J. M. J. Madey

An amplitude and phase compensation system has been developed and tested at the University of Hawai'i for the optimization of the RF drive system to the Mark V free-electron laser. Temporal uniformity of the RF drive is essential to the generation of an electron beam suitable for optimal free-electron laser performance and the operation of an inverse Compton scattering x-ray source. The design of the RF measurement and compensation system is described in detail and the results of RF phase compensation are presented. Performance of the free-electron laser was evaluated by comparing the measured effects of phase compensation with the results of a computer simulation. Finally, preliminary results are presented for the effects of amplitude compensation on the performance of the complete system.

Free-electron laser

Thomson scattering

Free electron model

10.1063/1.4809938

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Citations (2)

Effect of the optical field on electron motion

Morgan & Claypool Publishers eBooks (2014)

Eric B. Szarmes

10.1088/978-1-6270-5573-4ch6

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Small-signal gain—second derivation

Morgan & Claypool Publishers eBooks (2014)

Eric B. Szarmes

This textbook focuses on the fully classical theory of FELs with application to FEL oscillators and develops the fundamentals of FEL theory in sufficient depth to provide both a solid understanding of FEL physics and a solid background for research in the field. All numerical approximations were developed by the author and numerous examples are included throughout to illustrate the application of analytical results. The text is written at a level suitable for advanced undergraduate or graduate students.

Graduate students

SIGNAL (programming language)

10.1088/978-1-627-05573-4ch14

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Spontaneous emission

Morgan & Claypool Publishers eBooks (2014)

Eric B. Szarmes

10.1088/978-1-6270-5573-4ch5

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Optical phase locking of a 286-GHz harmonically mode-locked free-electron laser

Journal of the Optical Society of America B (1996)

Eric B. Szarmes Angus D. Madden J. M. J. Madey

We have phase locked the picosecond optical pulse train from the Mark III free-electron laser at the 2.86-GHz rf frequency, using a Michelson resonator to couple adjacent intracavity pulses, and have externally filtered a single axial mode from the optical spectrum at 3 μm, using a solid étalon in series with a monochrometer. The interpulse phase coherence is manifest in the optical spectrum as a reduction in the number of axial modes per rf band and was confirmed with a spectrum analyzer capable of distinguishing adjacent modes. The high-power resonator employed a sapphire beam splitter of novel design and yielded a peak single-mode output power of 28 W and an average unfiltered macropulse power of 3 kW with a frequency stability appropriate for high-resolution spectroscopy. We demonstrate stable, interferometric tuning of the axial modes and also measure the detuning and desynchronism properties of the resonator to be in complete agreement with previous theoretical analyses.

Beam splitter

Picosecond

10.1364/josab.13.001588

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Citations (9)

Multiphoton infrared isotope separation using the MkIII FEL system

Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms (1998)

A. K. Petrov Е. Н. Чесноков Sergey Gorelik Yu. N. Molin Karl D. Straub

Infrared multiphoton dissociation

Polyatomic ion

10.1016/s0168-583x(98)00308-5

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Citations (11)

Broadband tunable scanning IR-range etalon for FEL applications

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (1999)

F. F. Baryshnikov G. A. Bogatova N V Cheburkin S. A. Cherenkov Yuri A. Kalinin

A broadband, tunable, scanning IR-range etalon for FEL applications was designed, developed and tested. The design details and the results of the experimental tests are described and discussed.© (1999) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

10.1117/12.340071

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Gain reduction and other effects

Morgan & Claypool Publishers eBooks (2014)

Eric B. Szarmes

10.1088/978-1-627-05573-4ch10

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Citations (1)

A review of the Stanford Mark III infrared FEL program

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment (1990)

S. Benson W.-S. Fann Brett A. Hooper J. M. J. Madey Eric B. Szarmes

10.1016/0168-9002(90)91197-j

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Citations (40)