scholarly journals Generation of ultrashort keV Ar+ ion pulses via femtosecond laser photoionization

2021 ◽  
Vol 23 (3) ◽  
pp. 033023
Author(s):  
Alexander Golombek ◽  
Lars Breuer ◽  
Lisa Danzig ◽  
Paul Kucharczyk ◽  
Marika Schleberger ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Photoionization

Enantioselective femtosecond laser photoionization spectrometry of limonene using photoelectron circular dichroism

2015 ◽  
Vol 17 (14) ◽  
pp. 8614-8617 ◽  
Author(s):  
Mohammad M. Rafiee Fanood ◽  
Maurice H. M. Janssen ◽  
Ivan Powis
Keyword(s):  
Angular Distribution ◽  
Circular Dichroism ◽  
Femtosecond Laser ◽  
Multiphoton Ionization ◽  
Circularly Polarized ◽  
Chiral Asymmetry ◽  
Photoelectron Angular Distribution ◽  
Laser Photoionization ◽  
Circular Dichroïsm

Circularly polarized, femtosecond laser multiphoton ionization can clearly distinguish between the enantiomers of limonene from a 4% chiral asymmetry in the photoelectron angular distribution.

Femtosecond Laser Photoionization Mass Spectrometry of Molecules on Surfaces

1988 ◽  
pp. 414-419 ◽  
Author(s):  
S. V. Chekalin ◽  
V. V. Golovlev ◽  
A. A. Kozlov ◽  
V. S. Letokhov ◽  
Y. A. Matveetz ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Femtosecond Laser ◽  
Photoionization Mass Spectrometry ◽  
Laser Photoionization

Femtosecond laser photoionization mass spectrometry of tryptophan-containing proteins

1988 ◽  
Vol 92 (24) ◽  
pp. 6855-6858 ◽  
Author(s):  
S. V. Chekalin ◽  
V. V. Golovlev ◽  
A. A. Kozlov ◽  
Yu. A. Matveets ◽  
A. P. Yartsev ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Femtosecond Laser ◽  
Photoionization Mass Spectrometry ◽  
Laser Photoionization

Nanosecond laser-induced breakdown assisted by femtosecond laser pre-ionization in air: the effect on spatial resolution and continuous radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20701
Author(s):  
Bo Li ◽  
Xiaofeng Li ◽  
Zhifeng Zhu ◽  
Qiang Gao
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Laser Induced Breakdown Spectroscopy ◽  
Nanosecond Laser ◽  
Breakdown Threshold ◽  
Powerful Technique ◽  
Breakdown Spectroscopy ◽  
Continuous Radiation ◽  
Laser Induced Breakdown

Laser-induced breakdown spectroscopy (LIBS) is a powerful technique for quantitative diagnostics of gases. The spatial resolution of LIBS, however, is limited by the volume of plasma. Here femtosecond-nanosecond dual-pulsed LIBS was demonstrated. Using this method, the breakdown threshold was reduced by 80%, and decay of continuous radiation was shortened. In addition, the volume of the plasma was shrunk by 85% and hence, the spatial resolution of LIBS was significantly improved.

Femtosecond laser assisted penetrating keratoplasty

2006 ◽  
Vol 223 (S 1) ◽  
Author(s):  
MP Holzer ◽  
TM Rabsilber ◽  
GU Auffarth
Keyword(s):  
Femtosecond Laser ◽  
Penetrating Keratoplasty

Inorganic-organic Hybrid Materials for Real 3-D Sub-νm Lithography

2003 ◽  
Vol 780 ◽  
Author(s):  
R. Houbertz ◽  
J. Schulz ◽  
L. Fröhlich ◽  
G. Domann ◽  
M. Popall ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Sol Gel ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Hybrid Polymer ◽  
Organic Hybrid ◽  
Two Photon ◽  
Applied Technology ◽  
Scale Structures ◽  
Sol Gel Synthesis

AbstractReal 3-D sub-νm lithography was performed with two-photon polymerization (2PP) using inorganic-organic hybrid polymer (ORMOCER®) resins. The hybrid polymers were synthesized by hydrolysis/polycondensation reactions (modified sol-gel synthesis) which allows one to tailor their material properties towards the respective applications, i.e., dielectrics, optics or passivation. Due to their photosensitive organic functionalities, ORMOCER®s can be patterned by conventional photo-lithography as well as by femtosecond laser pulses at 780 nm. This results in polymerized (solid) structures where the non-polymerized parts can be removed by conventional developers.ORMOCER® structures as small as 200 nm or even below were generated by 2PP of the resins using femtosecond laser pulses. It is demonstrated that ORMOCER®s have the potential to be used in components or devices built up by nm-scale structures such as, e.g., photonic crystals. Aspects of the materials in conjunction to the applied technology are discussed.

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