scholarly journals Chirped-beam two-stage SASE-FEL for high power femtosecond X-ray pulse generation

2002 ◽  
Author(s):  
C.B. Schroeder ◽  
C. Pellegrini ◽  
S. Reiche ◽  
J. Arthur ◽  
P. Emma
Keyword(s):  
High Power ◽  
Pulse Generation ◽  
Two Stage ◽  
X Ray ◽  
Sase Fel

scholarly journals Chirped-beam two-stage SASE-FEL for high-power femtosecond x-ray pulse generation

2001 ◽  
Author(s):  
Carl B. Schroeder ◽  
Claudio Pellegrini ◽  
S. Reiche ◽  
John R. Arthur ◽  
P. Emma
Keyword(s):  
High Power ◽  
Pulse Generation ◽  
Two Stage ◽  
X Ray ◽  
Sase Fel

Chirped-beam two-stage free-electron laser for high-power femtosecond x-ray pulse generation

2002 ◽  
Vol 19 (8) ◽  
pp. 1782 ◽  
Author(s):  
Carl B. Schroeder ◽  
Claudio Pellegrini ◽  
Sven Reiche ◽  
John Arthur ◽  
Paul Emma
Keyword(s):  
High Power ◽  
Free Electron ◽  
Free Electron Laser ◽  
Pulse Generation ◽  
Two Stage ◽  
X Ray

Two-stage SASE FEL as Fully Coherent X-ray Laser

1998 ◽  
pp. II-65-II-66
Author(s):  
J. Feldhaus ◽  
E.L. Saldin ◽  
J.R. Schneider ◽  
E.A. Schneidmiller ◽  
M.V. Yurkov
Keyword(s):  
Two Stage ◽  
X Ray ◽  
Sase Fel

MULTISTAGE MICROSTRIP UHF LOAD

2018 ◽  
pp. 53-57 ◽  
Author(s):  
G. G. Savenkov ◽  
V. P. Razinkin ◽  
A. D. Mekhtiev
Keyword(s):  
Frequency Response ◽  
Frequency Band ◽  
High Power ◽  
Two Stage ◽  
High Power Microwave ◽  
Modelling Method ◽  
Optimal Values ◽  
Inductive Elements ◽  
Power Microwave

Applications of modern terminal loads and its relevant disadvantages are described in this paper. The decomposing method of wideband microwave high power microstrip loads design is proposed in this paper with purpose of matching quality improving. Multiple extension of multistage load bandwidth is provided by using of external matching circuit and internal matching inductive elements. The maximum reachable bandwidth of multistage load is estimated and optimal values of mathing circuit elements are founded on basis of equivalent lumped scheme. The topology of microstrip two-stage high power microwave load is developed and its frequency response, calculated via numeric electrodynamic modelling method is outlined in the paper. Modelling results show good matching quality of considered load at the frequency band below 3,5 GHz.

scholarly journals Few-Cycle Infrared Pulse Evolving in FEL Oscillators and Its Application to High-Harmonic Generation for Attosecond Ultraviolet and X-ray Pulses

Atoms ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 15
Author(s):  
Ryoichi Hajima
Keyword(s):  
Harmonic Generation ◽  
Short Pulse ◽  
High Harmonic ◽  
High Harmonic Generation ◽  
Pulse Generation ◽  
Solid State Lasers ◽  
Linear Accelerators ◽  
X Ray ◽  
Ultrafast Science ◽  
Historical Remarks

Generation of few-cycle optical pulses in free-electron laser (FEL) oscillators has been experimentally demonstrated in FEL facilities based on normal-conducting and superconducting linear accelerators. Analytical and numerical studies have revealed that the few-cycle FEL lasing can be explained in the frame of superradiance, cooperative emission from self-bunched systems. In the present paper, we review historical remarks of superradiance FEL experiments in short-pulse FEL oscillators with emphasis on the few-cycle pulse generation and discuss the application of the few-cycle FEL pulses to the scheme of FEL-HHG, utilization of infrared FEL pulses to drive high-harmonic generation (HHG) from gas and solid targets. The FEL-HHG enables one to explore ultrafast science with attosecond ultraviolet and X-ray pulses with a MHz repetition rate, which is difficult with HHG driven by solid-state lasers. A research program has been launched to develop technologies for the FEL-HHG and to conduct a proof-of-concept experiment of FEL-HHG.

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