Femtosecond laser photoemission microscopy of capillary nanotips with ultrahigh spatial resolution

2005 ◽  
Vol 101 (4) ◽  
pp. 628-634 ◽  
Author(s):  
B. N. Mironov ◽  
S. A. Aseev ◽  
S. V. Chekalin ◽  
V. S. Letokhov
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Laser Photoemission

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.

scholarly journals Regulating disordered plasmonic nanoparticles into polarization sensitive metasurfaces

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Shulei Li ◽  
Mingcheng Panmai ◽  
Shaolong Tie ◽  
Yi Xu ◽  
Jin Xiang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Metallic Nanoparticles ◽  
Near Infrared ◽  
Optical Memory ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Optical Diffraction ◽  
Plasmonic Nanoparticles ◽  
Direct Laser

Abstract Metasurfaces composed of regularly arranged and deliberately oriented metallic nanoparticles can be employed to manipulate the amplitude, phase and polarization of an incident electromagnetic wave. The metasurfaces operating in the visible to near infrared spectral range rely on the modern fabrication technologies which offer a spatial resolution beyond the optical diffraction limit. Although direct laser writing is an alternative to the fabrication of nanostructures, the achievement of regular nanostructures with deep-subwavelength periods by using this method remains a big challenge. Here, we proposed and demonstrated a novel strategy for regulating disordered plasmonic nanoparticles into nanogratings with deep-subwavelength periods and reshaped nanoparticles by using femtosecond laser pulses. The orientations of the nanogratings depend strongly on the polarization of the femtosecond laser light. Such nanogratings exhibit reflection and polarization control over the reflected light, enabling the realization of polarization sensitive optical memory and color display with high spatial resolution and good chromacity.

scholarly journals Ultrafast electron transport in layered semiconductors studied with femtosecond-laser photoemission

1997 ◽  
Vol 56 (19) ◽  
pp. 12092-12095 ◽  
Author(s):  
Armin Rettenberger ◽  
Paul Leiderer ◽  
Matthias Probst ◽  
Richard Haight
Keyword(s):  
Electron Transport ◽  
Femtosecond Laser ◽  
Layered Semiconductors ◽  
Laser Photoemission

scholarly journals High Spatial Resolution Analytical Electron Microscopic Investigation of Femtosecond-Laser-Induced Crystallization of a-Si:H Films

2006 ◽  
Vol 12 (S02) ◽  
pp. 634-635 ◽  
Author(s):  
VP Oleshko ◽  
BK Nayak ◽  
MC Gupta
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Microscopic Investigation ◽  
Electron Microscopic Investigation ◽  
Electron Microscopic ◽  
Analytical Electron ◽  
Induced Crystallization

Extended abstract of a paper presented at Microscopy and Microanalysis 2006 in Chicago, Illinois, USA, July 30 – August 3, 2005

Femtosecond laser microprocessing with three-dimensionally isotropic spatial resolution using crossed-beam irradiation

2006 ◽  
Vol 31 (2) ◽  
pp. 208 ◽  
Author(s):  
Koji Sugioka ◽  
Ya Cheng ◽  
Katsumi Midorikawa ◽  
Fumihiro Takase ◽  
Hiroshi Takai
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Beam Irradiation ◽  
Isotropic Spatial Resolution

Precision analysis of multisulfur isotopes in sulfides by femtosecond laser ablation GC-IRMS at high spatial resolution

2018 ◽  
Vol 493 ◽  
pp. 316-326 ◽  
Author(s):  
Alexander V. Ignatiev ◽  
Tatiana A. Velivetskaya ◽  
Sergey Y. Budnitskiy ◽  
Victoria V. Yakovenko ◽  
Sergey V. Vysotskiy ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Femtosecond Laser Ablation ◽  
Precision Analysis

Correlational Nonlinear Optical Femtosecond Laser Profilometer with Micrometer Spatial Resolution

2017 ◽  
Vol 60 (8) ◽  
pp. 794-800
Author(s):  
D. L. Hovhannisyan ◽  
A. O. Vardanyan ◽  
S. R. Melikyan ◽  
K. B. Savkin ◽  
S. V. Tikhomirov ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Nonlinear Optical ◽  
Laser Profilometer
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