Non-linear absorption of femtosecond laser pulses in a SiNx layer—influence of silicon doping type

Non-linear absorption of femtosecond laser pulses enables the induction of structural changes in the interior of bulk transparent materials without affecting their surface. This property can be exploited for the transmission welding of transparent dielectrics, three dimensional optical data storages and waveguides. In the present study, femtosecond laser pulses were tightly focused within the interior of bulk fused silica specimen. Localized plasma was formed, initiating rearrangement of the network structure. The change in material properties were studied through employment of spatially resolved Raman spectroscopy, atomic force microscopy and optical microscopy. The nature of the physical mechanisms responsible for the alteration of material properties as a function of process parameters is discussed.

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Modification of chalcogenide glasses by femtosecond laser pulses for the fabrication of highly non-linear 3D photonic devices

2008 IEEE/LEOS Winter Topical Meeting Series ◽

10.1109/leoswt.2008.4444371 ◽

2008 ◽

Author(s):

Elena Romanova ◽

Trevor Benson ◽

Angela Seddon ◽

David Furniss ◽

Nupur Prasad ◽

...

Keyword(s):

Femtosecond Laser ◽

Chalcogenide Glasses ◽

Laser Pulses ◽

Photonic Devices ◽

Femtosecond Laser Pulses ◽

Non Linear

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Processing of chalcogenide glass by the femtosecond laser pulses for achieving highly non-linear photonic structures

CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference ◽

10.1109/cleoe-eqec.2009.5191744 ◽

2009 ◽

Author(s):

Elena Romanova ◽

Andrey Konyukhov ◽

Sergey Muraviov ◽

Alexey Andrianov ◽

Trevor Benson ◽

...

Keyword(s):

Femtosecond Laser ◽

Chalcogenide Glass ◽

Laser Pulses ◽

Femtosecond Laser Pulses ◽

Photonic Structures ◽

Non Linear

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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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