High-intensity THz radiation from a scalable large-aperture emitter

2005 ◽  
Author(s):  
S. Winnerl ◽  
M. Krenz ◽  
A. Dreyhaupt ◽  
D. Stehr ◽  
T. Dekorsy ◽  
...  
Keyword(s):  
High Intensity ◽  
Thz Radiation ◽  
Large Aperture

High intensity focused ultrasound with large aperture transducers: A MRI based focal point correction for tissue heterogeneity

2012 ◽  
Vol 39 (4) ◽  
pp. 1936-1945 ◽  
Author(s):  
Charles Mougenot ◽  
Matti Tillander ◽  
Julius Koskela ◽  
Max O. Köhler ◽  
Chrit Moonen ◽  
...  
Keyword(s):  
High Intensity ◽  
Focused Ultrasound ◽  
Focal Point ◽  
High Intensity Focused Ultrasound ◽  
Tissue Heterogeneity ◽  
Large Aperture

Detection of high intensity thz radiation by field effect transistors

2014 ◽  
Author(s):  
Dmytro B. But ◽  
Mikola V. Sakhno ◽  
Jonathan Oden ◽  
T. Notake ◽  
Nina V. Dyakonova ◽  
...  
Keyword(s):  
High Intensity ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Thz Radiation

scholarly journals Note: A large aperture four-mirror reflective wave-plate for high-intensity short-pulse laser experiments

2012 ◽  
Vol 83 (3) ◽  
pp. 036104 ◽  
Author(s):  
B. Aurand ◽  
C. Rödel ◽  
H. Zhao ◽  
S. Kuschel ◽  
M. Wünsche ◽  
...  
Keyword(s):  
Pulse Laser ◽  
High Intensity ◽  
Short Pulse ◽  
Wave Plate ◽  
Large Aperture ◽  
Short Pulse Laser ◽  
Laser Experiments

scholarly journals High-intensity terahertz generation by nonlinear frequency-mixing of lasers in plasma with DC magnetic field

2015 ◽  
Vol 33 (3) ◽  
pp. 519-524 ◽  
Author(s):  
Anil K. Malik ◽  
Kunwar Pal Singh
Keyword(s):  
Magnetic Field ◽  
High Intensity ◽  
Ponderomotive Force ◽  
Wave Number ◽  
Thz Radiation ◽  
Nonlinear Frequency ◽  
External Static Magnetic Field ◽  
Radiation Generation ◽  
Tunable Frequency ◽  
Frequency Mixing

AbstractWe propose a mechanism of highly focused, tunable and high-intensity terahertz (THz) radiation generation by frequency-mixing of two super-Gaussian lasers with frequencies ω1, ω2 and wave numbers k1, k2 (laser profile index p > 2) in a corrugated plasma in the presence of external static magnetic field ${B_0}\hat z$. In this process, a strong nonlinear ponderomotive force is offered to the plasma electrons at frequency ω′ = ω1 − ω2 and wave number k′ = k1 − k2 by laser beams. The ponderomotive force results in a strong, controllable nonlinear transverse oscillatory current, which can be optimized by optimizing the external magnetic field, ripple parameters, and laser indexes. This controllable current produces focused and intense THz radiation of tunable frequency and power along with a remarkable efficiency ~25%.

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