Synchrotron radiation lasers

Jay L. Hirshfield; Gun-Sik Park

doi:10.1117/12.50600

1 December 1991 Synchrotron radiation lasers

Jay L. Hirshfield, Gun-Sik Park

Proceedings Volume 1552, Short-Wavelength Radiation Sources; (1991) https://doi.org/10.1117/12.50600
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

Stimulated emission of synchrotron radiation is possible when an electromagnetic wave polarized in the orbit plane propagates across a static magnetic field along which relativistic electrons gyrate. In principle, optical gain can be observed up to gyration harmonic numbers n of the order of n_cr equals 3γ³, where γ is the relativistic energy factor. For n > n_cr the gain falls off as exp(-2n/n_cr). A universal gain formula is presented, valid for all values of n/n_cr. It is shown that synchrotron radiation laser (SRL) gain is large than FEL gain when a similar electron beam is considered. For millimeter wavelength SRLs at 100 and 300 GHz, conceptual designs are presented which use a 2 MeV sub-Ampere electron beam with a magnetic field as low as 6 kG. For shorter wavelength SRLs, including visible wavelength devices, beam cooling may be required to obtain the necessary low energy spread. A means for achieving the cooling is described. A conceptual design for a 633 nm SRL is presented which would use a 10 MeV, 0.2 Ampere beam in a 100 kG uniform magnetic field.

Citation Download Citation

Jay L. Hirshfield and Gun-Sik Park "Synchrotron radiation lasers", Proc. SPIE 1552, Short-Wavelength Radiation Sources, (1 December 1991); https://doi.org/10.1117/12.50600

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