Visible infrared optical parametric generator pumped by the second harmonic of a Ti:sapphire laser amplifier

1995 ◽  
Author(s):  
Frank Seifert ◽  
Frank Noack ◽  
Valentin P. Petrov
Keyword(s):  
Second Harmonic ◽  
Laser Amplifier ◽  
Ti:Sapphire Laser ◽  
Optical Parametric ◽  
Parametric Generator

scholarly journals Development of a 1 TW/35 fs Ti:sapphire Laser Amplifier and Generation of Intense THz Waves Using Two-Color Laser Filamentation

Photonics ◽  
2021 ◽  
Vol 8 (8) ◽  
pp. 316
Author(s):  
Vanessa Ling Jen Phung ◽  
Keekon Kang ◽  
Seongjin Jeon ◽  
Jinju Kim ◽  
Kyungmin Roh ◽  
...  
Keyword(s):  
Laser Energy ◽  
Second Harmonic ◽  
Laser Pulses ◽  
Intense Laser ◽  
Laser Amplifier ◽  
Terahertz Waves ◽  
Regenerative Amplifier ◽  
Central Wavelength ◽  
Particle In Cell ◽  
Ti:Sapphire Laser

We developed a compact Ti:sapphire laser amplifier system in our laboratory, generating intense laser pulses with a peak power of >1 TW (terawatt), a pulse duration of 34 fs (femtosecond), a central wavelength of 800 nm, and a repetition rate of 10 Hz. The laser amplifier system consists of a mode-locked Ti:sapphire oscillator, a regenerative amplifier, and a single-side-pumped 4-pass amplifier. The chirped-pulse amplification (CPA)-based laser amplifier was found to provide an energy of 49.6 mJ after compression by gratings in air, where the pumping fluence of 1.88 J/cm2 was used. The amplified spontaneous emission (ASE) level was measured to be lower than 10−7, and ps-prepulses were in 10−4 or lower level. The developed laser amplifier system was used for the generation of intense THz (terahertz) waves by focusing the original (800 nm) and second harmonic (400 nm) laser pulses in air. The THz pulse energy was shown to be saturated in the high laser energy regime, and this phenomenon was confirmed by fully electromagnetic, relativistic, and self-consistent particle-in-cell (PIC) simulations.

scholarly journals Strong second harmonic generation in SiC, ZnO, GaN two-dimensional hexagonal crystals from first-principles many-body calculations

2015 ◽  
Vol 17 (14) ◽  
pp. 9533-9540 ◽  
Author(s):  
C. Attaccalite ◽  
A. Nguer ◽  
E. Cannuccia ◽  
M. Grüning
Keyword(s):  
Second Harmonic Generation ◽  
Real Time ◽  
Harmonic Generation ◽  
First Principles ◽  
Function Theory ◽  
Second Harmonic ◽  
Two Dimensional ◽  
Many Body ◽  
Ti:Sapphire Laser ◽  
Hexagonal Crystals

By using a real-time approach based on Green's function theory we predict a strong second-harmonic generation (SHG) for frequencies at which Ti:sapphire laser operates and for which the materials are transparent.

Modulation of spatial spectrum in tunable two crystal optical parametric generator

2007 ◽  
Vol 280 (2) ◽  
pp. 463-467 ◽  
Author(s):  
S. Ališauskas ◽  
R. Butkus ◽  
A. Piskarskas ◽  
K. Regelskis ◽  
V. Smilgevičius
Keyword(s):  
Spatial Spectrum ◽  
Optical Parametric ◽  
Parametric Generator
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