Parametric generation of light X waves by Bessel beam pump

2005 ◽  
Vol 45 (5) ◽  
pp. 359-362
Author(s):  
Sergej Orlov ◽  
Algirdas Stabinis
Keyword(s):  
Bessel Beam ◽  
Parametric Generation ◽  
Beam Pump ◽  
Parametric Generation Of Light

Parametric generation of light in arbitrary directions of a biaxial KTP crystal pumped by an Nd:YAG laser

1999 ◽  
Vol 66 (2) ◽  
pp. 187-195
Author(s):  
V. N. Belyi ◽  
N. S. Kazak ◽  
A. G. Mashchenko ◽  
B. B. Sevruk
Keyword(s):  
Nd:Yag Laser ◽  
Parametric Generation ◽  
Ktp Crystal ◽  
Parametric Generation Of Light

Clustered gases as a medium for efficient plasma waveguide generation

2006 ◽  
Vol 364 (1840) ◽  
pp. 647-661 ◽  
Author(s):  
H.M Milchberg ◽  
K.Y Kim ◽  
V Kumarappan ◽  
B.D Layer ◽  
H Sheng
Keyword(s):  
Laser Pulse ◽  
Bessel Beam ◽  
Leading Edge ◽  
Plasma Waveguide ◽  
Gas Jets ◽  
Cool Plasma ◽  
Beam Pump ◽  
Guided Propagation ◽  
Long Pulse ◽  
Disassembly Time

Clustered gas jets are shown to be an efficient means for plasma waveguide generation, for both femtosecond and picosecond generation pulses. These waveguides enable significantly lower on-axis plasma density (less than 10 18  cm −3 ) than in conventional hydrodynamic plasma waveguides generated in unclustered gases. Using femtosecond pump pulses, self-guided propagation and strong absorption (more than 70%) are used to produce long centimetre scale channels in an argon cluster jet, and a subsequent intense pulse is coupled into the guide with 50% efficiency and guided at above 10 17  W cm −2 intensity over 40 Rayleigh lengths. We also demonstrate efficient generation of waveguides using 100 ps axicon-generated Bessel-beam pump pulses. Despite the expected sub-picosecond cluster disassembly time, we observe long pulse absorption efficiencies up to a maximum of 35%. Simulations show that in the far leading edge of the long laser pulse, the volume of heated clusters evolves to a locally uniform and cool plasma already near ionization saturation, which is then efficiently heated by the remainder of the pulse.

Calculation of the conditions for parametric generation of light in LiNbO3:Ti channel waveguides

1984 ◽  
Vol 14 (7) ◽  
pp. 972-975 ◽  
Author(s):  
K S Buritskiĭ ◽  
Evgenii M Zolotov ◽  
A M Prokhorov ◽  
V A Chernykh
Keyword(s):  
Parametric Generation ◽  
Channel Waveguides ◽  
Parametric Generation Of Light
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