Generation of polarization-entangled photon pairs by a single crystal interferometric source pumped by femtosecond laser pulses

We carried out cross-sectional transmission electron microscopy (TEM) investigation of femtosecond laser-induced ripples formed on 4H-SiC single crystal surface. Here, we paid attention to the crystal structures underlying the coarse and fine ripples and the three-dimensional distribution of amorphous phase. Conventional and high-resolution TEM analyses made clear that a continuous amorphous layer approximately of 50 nm thick exist at the topmost region of both coarse and fine ripples. The result strongly suggests that the fundamental surface deformation process is common for coarse and fine ripples, even though the factors which determine their periods are different.

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Formation of slantwise orientated nanoscale ripple structures on a single-crystal 4H-SiC surface by time-delayed double femtosecond laser pulses

Applied Physics A ◽

10.1007/s00339-017-1101-4 ◽

2017 ◽

Vol 123 (8) ◽

Cited By ~ 1

Author(s):

Wanlin He ◽

Jianjun Yang

Keyword(s):

Femtosecond Laser ◽

Single Crystal ◽

Laser Pulses ◽

Femtosecond Laser Pulses

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Influence of Trap States on the Kinetics of Luminescence and Induced Light Absorption by Si Nanoparticles in a SiO2 Matrix at Their Excitation with Femtosecond Laser Pulses

Ukrainian Journal of Physics ◽

10.15407/ujpe58.01.0020 ◽

2013 ◽

Vol 58 (1) ◽

pp. 20-25

Author(s):

V.M. Kadan ◽

◽

I.Z. Indutnyi ◽

V.A. Dan’ko ◽

P.E. Shepelyavyi ◽

...

Keyword(s):

Femtosecond Laser ◽

Light Absorption ◽

Laser Pulses ◽

Femtosecond Laser Pulses ◽

Trap States ◽

Sio2 Matrix ◽

Si Nanoparticles ◽

Kinetics Of

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

MRS Proceedings ◽

10.1557/proc-780-y4.12 ◽

2003 ◽

Vol 780 ◽

Cited By ~ 1

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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Ablation of metals with femtosecond laser pulses

International Congress on Applications of Lasers & Electro-Optics ◽

10.2351/1.5059824 ◽

2001 ◽

Author(s):

K. H. Leong ◽

T. Y. Plew ◽

R. L. Maynard ◽

A. A. Said ◽

L. A. Walker

Keyword(s):

Femtosecond Laser ◽

Laser Pulses ◽

Femtosecond Laser Pulses

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Nanostructuring with Femtosecond Laser Pulses on Patterned DLC Surface

Journal of Laser Micro/Nanoengineering ◽

10.2961/jlmn.2008.02.0005 ◽

2008 ◽

Vol 3 (2) ◽

pp. 84-87

Author(s):

Godai Miyaji

Keyword(s):

Femtosecond Laser ◽

Laser Pulses ◽

Femtosecond Laser Pulses

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

ISTFA 2009: Conference Proceedings from the 35th International Symposium for Testing and Failure Analysis ◽

10.31399/asm.cp.istfa2009p0268 ◽

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.

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