scholarly journals Analysis and applications of femtosecond-laser-induced nanogratings from UV to telecom wavelength

2012 ◽  
Author(s):  
Martynas Beresna ◽  
Mindaugas Gecevičius ◽  
Peter G. Kazansky
Keyword(s):  
Femtosecond Laser ◽  
Telecom Wavelength

scholarly journals Thermally reconfigurable quantum photonic circuits at telecom wavelength by femtosecond laser micromachining

2015 ◽  
Vol 4 (11) ◽  
pp. e354-e354 ◽  
Author(s):  
Fulvio Flamini ◽  
Lorenzo Magrini ◽  
Adil S Rab ◽  
Nicolò Spagnolo ◽  
Vincenzo D'Ambrosio ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Micromachining ◽  
Photonic Circuits ◽  
Femtosecond Laser Micromachining ◽  
Telecom Wavelength

scholarly journals Detection of THz waves in GaSe:S crystals by femtosecond laser radiation with a telecom wavelength of 1.55 μm

2021 ◽  
Vol 2067 (1) ◽  
pp. 012012
Author(s):  
O N Shevchenko ◽  
N A Nikolaev ◽  
K A Kokh
Keyword(s):  
Laser Radiation ◽  
Femtosecond Laser ◽  
Detection Efficiency ◽  
Femtosecond Laser Radiation ◽  
Terahertz Pulses ◽  
Electrooptic Coefficient ◽  
Thz Waves ◽  
Telecom Wavelength

Abstract In this work, we study Ga50%Se50-x%Sx crystals (where x = 0, 1.5, 6, 8, 11) as an electrooptic detector of terahertz pulses using probing femtosecond laser radiation with the wavelength of 1.55 μm. It was found that the sample with x = 6 provides the highest detection efficiency. The efficient value of the electrooptic coefficient of GaSe:S crystals is estimated to be about twice higher than those of GaAs in the same conditions.

scholarly journals Integrated sources of entangled photons at the telecom wavelength in femtosecond-laser-written circuits

Optica ◽  
2018 ◽  
Vol 5 (3) ◽  
pp. 311 ◽  
Author(s):  
Simone Atzeni ◽  
Adil S. Rab ◽  
Giacomo Corrielli ◽  
Emanuele Polino ◽  
Mauro Valeri ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Entangled Photons ◽  
Telecom Wavelength

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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