Inlayed “Atom-like Three-Dimensional Photonic Crystal Structures Created with Femtosecond Laser Microfabrication

1999 ◽  
Vol 605 ◽  
Author(s):  
Hong-Bo Sun ◽  
Ying Xu ◽  
Kai Sun ◽  
Saulius Juodkazis ◽  
Mitsuru Watanabe ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Femtosecond Laser ◽  
Three Dimensional ◽  
Laser Pulses ◽  
Ultrashort Laser Pulses ◽  
Absorption Process ◽  
Photonic Lattices ◽  
Transparent Media ◽  
Arbitrary Lattice ◽  
Ultrashort Laser

AbstractUltrashort laser pulses are utilized for fabrication of three-dimensional (3D) photonic crystals based on a multiphoton absorption process. The basic idea is, when a femtosecond laser pulse is tightly focused into some transparent media, a submicrometer hole will be generated due to microexplosion. By arraying these holes the same way as atoms in general solid crystals, 3D photonic lattices are achieved. Pronounced photonic bandgap effect shows that this technique is promising for tailoring arbitrary-lattice photonic crystals.

Picosecond Single-Photon and Femtosecond Two-Photon Pulsed Laser Stimulation for IC Characterization and Failure Analysis

2009 ◽  
Author(s):  
V. Pouget ◽  
E. Faraud ◽  
K. Shao ◽  
S. Jonathas ◽  
D. Horain ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Single Photon ◽  
Pulsed Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Ultrashort Laser Pulses ◽  
Laser Stimulation ◽  
Two Photon ◽  
Resolution Improvement ◽  
Ultrashort Laser

Abstract This paper presents the use of pulsed laser stimulation with picosecond and femtosecond laser pulses. We first discuss the resolution improvement that can be expected when using ultrashort laser pulses. Two case studies are then presented to illustrate the possibilities of the pulsed laser photoelectric stimulation in picosecond single-photon and femtosecond two-photon modes.

Three-dimensional structuring of glass by ultrashort laser pulses

2003 ◽  
Author(s):  
Stefan Nolte ◽  
Matthias Will ◽  
Jonas Burghoff ◽  
Andreas Tuennermann
Keyword(s):  
Three Dimensional ◽  
Laser Pulses ◽  
Ultrashort Laser Pulses ◽  
Ultrashort Laser

Matched second-harmonic generation of ultrashort laser pulses in photonic crystals

JETP Letters ◽  
1999 ◽  
Vol 70 (12) ◽  
pp. 819-825 ◽  
Author(s):  
A. V. Tarasishin ◽  
A. M. Zheltikov ◽  
S. A. Magnitskii
Keyword(s):  
Photonic Crystals ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Laser Pulses ◽  
Ultrashort Laser Pulses ◽  
Ultrashort Laser

Three-dimensional subsurface microprocessing of collagen by ultrashort laser pulses

2001 ◽  
Vol 78 (7) ◽  
pp. 999-1001 ◽  
Author(s):  
Nicholas I. Smith ◽  
Katsumasa Fujita ◽  
Osamu Nakamura ◽  
Satoshi Kawata
Keyword(s):  
Three Dimensional ◽  
Laser Pulses ◽  
Ultrashort Laser Pulses ◽  
Ultrashort Laser

scholarly journals Femtosecond Laser Assisted Crystallization of Gold Thin Films

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1186
Author(s):  
Ayesha Sharif ◽  
Nazar Farid ◽  
Rajani K. Vijayaraghavan ◽  
Patrick J. McNally ◽  
Gerard M. O’Connor
Keyword(s):  
Thin Films ◽  
Femtosecond Laser ◽  
Quartz Substrate ◽  
Damage Threshold ◽  
Laser Pulses ◽  
Industrial Applications ◽  
Ultrashort Laser Pulses ◽  
Gold Films ◽  
Gold Thin Films ◽  
Ultrashort Laser

We propose a novel low temperature annealing method for selective crystallization of gold thin films. Our method is based on a non-melt process using highly overlapped ultrashort laser pulses at a fluence below the damage threshold. Three different wavelengths of a femtosecond laser with the fundamental (1030 nm), second (515 nm) and third (343 nm) harmonic are used to crystallize 18-nm and 39-nm thick room temperature deposited gold thin films on a quartz substrate. Comparison of laser wavelengths confirms that improvements in electrical conductivity up to 40% are achievable for 18-nm gold film when treated with the 515-nm laser, and the 343-nm laser was found to be more effective in crystallizing 39-nm gold films with 29% improvement in the crystallinity. A two-temperature model provides an insight into ultrashort laser interactions with gold thin films and predicts that applied fluence was insufficient to cause melting of gold films. The simulation results suggest that non-equilibrium energy transfer between electrons and lattice leads to a solid-state and melt-free crystallization process. The proposed low fluence femtosecond laser processing method offers a possible solution for a melt-free thin film crystallization for wide industrial applications.

scholarly journals Fabricating waveguide Bragg gratings (WBGs) in bulk materials using ultrashort laser pulses

Nanophotonics ◽  
2017 ◽  
Vol 6 (5) ◽  
pp. 743-763 ◽  
Author(s):  
Martin Ams ◽  
Peter Dekker ◽  
Simon Gross ◽  
Michael J. Withford
Keyword(s):  
Femtosecond Laser ◽  
Ion Beam ◽  
Laser Pulses ◽  
Bragg Gratings ◽  
Femtosecond Laser Pulses ◽  
Ultrafast Laser ◽  
Ultrashort Laser Pulses ◽  
Clean Room ◽  
Bulk Materials ◽  
Ultrashort Laser

AbstractOptical waveguide Bragg gratings (WBGs) can be created in transparent materials using femtosecond laser pulses. The technique is conducted without the need for lithography, ion-beam fabrication methods, or clean room facilities. This paper reviews the field of ultrafast laser-inscribed WBGs since its inception, with a particular focus on fabrication techniques, WBG characteristics, WBG types, and WBG applications.

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