Terahertz radiation generation by beating of two laser beams in a collisional plasma with oblique magnetic field

2018 ◽  
Vol 25 (2) ◽  
pp. 023514
Author(s):  
Ayoob Hematizadeh ◽  
Seyed Masud Jazayeri ◽  
Bijan Ghafary
Keyword(s):  
Magnetic Field ◽  
Terahertz Radiation ◽  
Collisional Plasma ◽  
Laser Beams ◽  
Radiation Generation ◽  
Oblique Magnetic Field

scholarly journals Generation of terahertz radiation in collisional plasma by beating of two dark hollow laser beams

2015 ◽  
Vol 33 (3) ◽  
pp. 463-472 ◽  
Author(s):  
Farhad Bakhtiari ◽  
Shole Golmohammady ◽  
Masoud Yousefi ◽  
Fatemeh D. Kashani ◽  
Bijan Ghafary
Keyword(s):  
Terahertz Radiation ◽  
Laser Beams ◽  
Intensity Gradient ◽  
Plasma Parameters ◽  
Highly Sensitive ◽  
Radiation Generation ◽  
Spatially Periodic ◽  
Special Distribution ◽  
Hollow Laser Beam ◽  
Beating Frequency

AbstractThis paper presents a scheme of terahertz radiation generation based on beating of two dark hollow laser beams with different frequencies, the same electric field amplitudes, in actual plasma with spatially periodic density that electron–neutral collisions have taken into account. The main feature of considered hollow laser beams is, having the same power at different beam orders. Because of special distribution in beam intensity gradient in dark hollow laser beam, the produced terahertz radiation has special field profile. The effects of laser and plasma parameters on terahertz radiation generation are investigated analytically. It can be deduced that by increasing beating frequency, efficiency of terahertz generation decreases which can be compensated by manipulating density ripple magnitudes and dark-size adjusting parameter. The intensity of the emitted radiations is found to be highly sensitive to the beam order. Based on the results of this paper, optimization of laser and plasma parameters can increase the efficiency of terahertz radiation generation strongly.

High-power terahertz radiation generation by beating of two co-propagating super-Gaussian laser beams in cluster plasma

Laser Physics ◽  
2018 ◽  
Vol 28 (8) ◽  
pp. 086003 ◽  
Author(s):  
Ram Kishor Singh ◽  
Monika Singh ◽  
Satish Kumar Rajouria
Keyword(s):  
Terahertz Radiation ◽  
High Power ◽  
Laser Beams ◽  
Radiation Generation
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