Compact, High-Power Electron Beam Based Terahertz Sources

Although terahertz (THz) radiation was first observed about 100 years ago, this portion of the electromagnetic spectrum at the boundary between the microwaves and the infrared has been, for a long time, rather poorly explored. This situation changed with the rapid development of coherent THz sources such as solid-state oscillators, quantum cascade lasers, optically pumped solid-state devices, and novel coherent radiator devices. These in turn have stimulated a wide variety of applications from material science to telecommunications, from biology to biomedicine. Recently, there have been two related compact coherent radiation devices invented able to produce up to megawatts of peak THz power by inducing a ballistic bunching effect on the electron beam, forcing the beam to radiate coherently. An introduction to the two systems and the corresponding output photon beam characteristics will be provided.

[1]  I. Spassovsky,et al.  Enhanced coherent emission of terahertz radiation by energy-phase correlation in a bunched electron beam. , 2004, Physical review letters.

[2]  Pellegrini,et al.  Time and frequency domain analysis of superradiant coherent synchrotron radiation in a waveguide free-electron laser. , 1994, Physical review letters.

[3]  I. H. Munro,et al.  Development of an undulator for the SRS , 1983 .

[4]  R. Pantell,et al.  The free-electron laser as a laboratory instrument , 1995 .

[5]  D. Tanner,et al.  Observation of coherent synchrotron radiation from the NSLS VUV ring , 2001 .

[6]  Young Uk Jeong,et al.  First lasing of the KAERI compact far-infrared free-electron laser driven by a magnetron-based microtron , 2001 .

[7]  Ulf Lehnert,et al.  First lasing of the ELBE MID-IR FEL , 2004 .

[8]  Gerald Ramian,et al.  The new UCSB free-electron lasers , 1992 .

[9]  Wayne R. McKinney,et al.  High-power terahertz radiation from relativistic electrons , 2002, Nature.

[10]  J. Ortega,et al.  New results of the ‘CLIO’ infrared FEL , 2004 .

[11]  Sandra Biedron,et al.  OVERVIEW OF TERAHERTZ RADIATION SOURCES , 2004 .

[12]  Oepts,et al.  Coherent startup of an infrared free-electron laser. , 1993, Physical review letters.

[13]  K. Mima,et al.  Features of the compact photon storage ring , 1993 .

[14]  J. Brownell,et al.  Determination of longitudinal bunch shape by means of coherent Smith-Purcell radiation , 2002 .

[15]  R. Phillips.  History of the ubitron , 1988 .

[16]  H. Hübers,et al.  Steady-state far-infrared coherent synchrotron radiation detected at BESSY II. , 2002, Physical review letters.

[17]  D. A. Dunnett.  Classical Electrodynamics , 2020, Nature.

[18]  G. Gallerano,et al.  ENHANCEMENT OF COHERENT EMISSION BY ENERGY-PHASE CORRELATION IN A BUNCHED ELECTRON BEAM , 1998 .

[19]  Kevin Barraclough,et al.  I and i , 2001, BMJ : British Medical Journal.

[20]  C. Geddes,et al.  Observation of terahertz emission from a laser-plasma accelerated electron bunch crossing a plasma-vacuum boundary. , 2003, Physical review letters.

[21]  David S. Saxon,et al.  Suppression of Coherent Radiation by Electrons in a Synchrotron , 1954 .

[22]  P ? ? ? ? ? ? ? % ? ? ? ? , 1991 .

[23]  Doria,et al.  Observation of coherent millimeter and submillimeter emission from a microtron-driven Cherenkov free-electron laser. , 1991, Physical review letters.

[24]  E. Crosson,et al.  Coherent spontaneous radiation from highly bunched electron beams , 1996 .

[25]  Wiedemann,et al.  Generation and measurement of 50-fs(rms) electron pulses. , 1994, Physical review letters.

[26]  M. Brereton.  Classical Electrodynamics (2nd edn) , 1976 .

[27]  H. Motz,et al.  Applications of the Radiation from Fast Electron Beams , 1951 .

[28]  John M. J. Madey,et al.  First Operation of a Free-Electron Laser , 1977 .

[29]  Oleg A. Shevchenko,et al.  STATUS OF THE NOVOSIBIRSK TERAHERTZ FEL , 2005 .

[30]  R. Pantell,et al.  Coherent emission and gain from a bunched electron beam , 1993 .

[31]  H. Loos,et al.  Electron beam modulation using a laser-driven photocathode , 2003 .

[32]  G. Gallerano,et al.  Coherence effects in FEL radiation generated by short electron bunches , 1995 .

[33]  M. D. Sirkis,et al.  THE HARMODOTRON-A MEGAVOLT ELECTRONICS MILLIMETER WAVE GENERATOR , 1957 .

[34]  C. Ronsivalle,et al.  Long wavelength compact-FEL with controlled energy–phase correlation , 2001 .

[35]  Emilio Giovenale,et al.  Compact free electron lasers: From Cerenkov to waveguide free electron lasers , 1999 .

[36]  A.F.G. van der Meer.  FELS, nice toys or efficient tools? , 2004 .

[37]  J M Byrd,et al.  Observation of broadband self-amplified spontaneous coherent terahertz synchrotron radiation in a storage ring. , 2002, Physical review letters.