Plasma-induced spectral broadening of high-energy ultrashort laser pulses in a helium-filled multiple-pass cell

2006 ◽  
Vol 23 (9) ◽  
pp. 1946 ◽  
Author(s):  
Muhammad Nurhuda ◽  
Akira Suda ◽  
Katsumi Midorikawa
Keyword(s):  
Laser Pulses ◽  
High Energy ◽  
Ultrashort Laser Pulses ◽  
Spectral Broadening ◽  
Multiple Pass ◽  
Ultrashort Laser ◽  
Multiple Pass Cell

Stray light autocorrelation for the measurement of ultrashort laser pulses

2020 ◽  
Vol 87 (5) ◽  
pp. 312-322
Author(s):  
Anne-Sophie Rother ◽  
Peter Kohns ◽  
Georg Ankerhold
Keyword(s):  
Conversion Efficiency ◽  
Nonlinear Medium ◽  
Laser Pulses ◽  
High Energy ◽  
Ultrashort Laser Pulses ◽  
Stray Light ◽  
Dihydrogen Phosphate ◽  
Barium Borate ◽  
Promising Alternative ◽  
Ultrashort Laser

AbstractUltrashort laser pulses in the femtosecond range are of growing interest in medicine and micro material processing for industrial applications. The most interesting parameter is the pulse duration, which can only be measured by optical autocorrelation methods incorporating an optically nonlinear medium. Established methods mostly use monocrystalline beta barium borate (BBO) in transmission, exhibiting a high nonlinear conversion efficiency. However, this material is brittle, expensive and sophisticated in adjustment due to the necessary non-collinear phase matching. Since fiber-based high energy femtosecond laser systems become more and more achievable, the conversion efficiency of the nonlinear medium should no longer be seen as the restricting factor. Therefore, this research work discusses the suitability of several nonlinear media with differing translucency. Quartz, ammonium dihydrogen phosphate (ADP) and aluminum nitride (AlN) were compared in a standard autocorrelation setup and a novel versatile setup measuring frequency-doubled stray light. Best results were achieved with AlN, which appears to be a suitable and promising alternative material to BBO, reducing the expenses by two to three orders of magnitude.

scholarly journals Compression of high-energy ultrashort laser pulses through an argon-filled tapered planar waveguide

2011 ◽  
Vol 28 (5) ◽  
pp. 1009 ◽  
Author(s):  
Shihua Chen ◽  
Amelie Jarnac ◽  
Aurélien Houard ◽  
Yi Liu ◽  
Cord L. Arnold ◽  
...  
Keyword(s):  
Planar Waveguide ◽  
Laser Pulses ◽  
High Energy ◽  
Ultrashort Laser Pulses ◽  
Ultrashort Laser

scholarly journals Raman effect in the spectral broadening of ultrashort laser pulses in saturated versus unsaturated hydrocarbon molecules

2020 ◽  
Vol 28 (2) ◽  
pp. 980 ◽  
Author(s):  
Ojoon Kwon ◽  
Reza Safaei ◽  
Philippe Lassonde ◽  
Guangyu Fan ◽  
Andrius Baltuška ◽  
...  
Keyword(s):  
Raman Effect ◽  
Laser Pulses ◽  
Unsaturated Hydrocarbon ◽  
Ultrashort Laser Pulses ◽  
Spectral Broadening ◽  
Hydrocarbon Molecules ◽  
Ultrashort Laser

Compression of High Energy Ultrashort Laser Pulses in Hollow Planar Waveguides

2009 ◽  
Author(s):  
Selcuk Akturk ◽  
Cord Arnold ◽  
Bing Zhou ◽  
Arnaud Couairon ◽  
Michel Franco ◽  
...  
Keyword(s):  
Laser Pulses ◽  
High Energy ◽  
Ultrashort Laser Pulses ◽  
Planar Waveguides ◽  
Ultrashort Laser

Efficient Chirped Bragg Gratings for Stretching and Compression of High Energy Ultrashort Laser Pulses at 800 nm Spectral Region

CLEO: 2015 ◽  
2015 ◽  
Author(s):  
Vadim Smirnov ◽  
Eugene Rotari ◽  
Ruslan Vasilyeu ◽  
Oleksiy Mokhun ◽  
Ion Cohanoschi ◽  
...  
Keyword(s):  
Spectral Region ◽  
Laser Pulses ◽  
Bragg Gratings ◽  
High Energy ◽  
Ultrashort Laser Pulses ◽  
Ultrashort Laser

scholarly journals Deuterated polyethylene nanowire arrays for high-energy density physics

2021 ◽  
Vol 9 ◽  
Author(s):  
M. G. Capeluto ◽  
A. Curtis ◽  
C. Calvi ◽  
R. Hollinger ◽  
V. N. Shlyaptsev ◽  
...  
Keyword(s):  
Energy Density ◽  
Laser Pulses ◽  
High Energy ◽  
Ultrashort Laser Pulses ◽  
High Energy Density ◽  
Level Energy ◽  
Fusion Neutrons ◽  
Nanostructure Arrays ◽  
Deuterated Polyethylene ◽  
Ultrashort Laser

Abstract The interaction of intense, ultrashort laser pulses with ordered nanostructure arrays offers a path to the efficient creation of ultra-high-energy density (UHED) matter and the generation of high-energy particles with compact lasers. Irradiation of deuterated nanowires arrays results in a near-solid density environment with extremely high temperatures and large electromagnetic fields in which deuterons are accelerated to multi-megaelectronvolt energies, resulting in deuterium–deuterium (D–D) fusion. Here we focus on the method of fabrication and the characteristics of ordered arrays of deuterated polyethylene nanowires. The irradiation of these array targets with femtosecond pulses of relativistic intensity and joule-level energy creates a micro-scale fusion environment that produced $2\times {10}^6$  neutrons per joule, an increase of about 500 times with respect to flat solid CD2 targets irradiated with the same laser pulses. Irradiation with 8 J laser pulses was measured to generate up to 1.2 × 107 D–D fusion neutrons per shot.

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