scholarly journals High laser induced damage threshold photoresists for nano-imprint and 3D multi-photon lithography

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Elmina Kabouraki ◽  
Vasileia Melissinaki ◽  
Amit Yadav ◽  
Andrius Melninkaitis ◽  
Konstantina Tourlouki ◽  
...  
Keyword(s):  
Nanoimprint Lithography ◽  
Three Dimensional ◽  
Damage Threshold ◽  
Laser Pulses ◽  
Intense Laser ◽  
Optical Elements ◽  
Photonic Circuits ◽  
Future Production ◽  
Intense Laser Pulses ◽  
Laser Induced Damage

Abstract Optics manufacturing technology is predicted to play a major role in the future production of integrated photonic circuits. One of the major drawbacks in the realization of photonic circuits is the damage of optical materials by intense laser pulses. Here, we report on the preparation of a series of organic–inorganic hybrid photoresists that exhibit enhanced laser-induced damage threshold. These photoresists showed to be candidates for the fabrication of micro-optical elements (MOEs) using three-dimensional multiphoton lithography. Moreover, they demonstrate pattern ability by nanoimprint lithography, making them suitable for future mass production of MOEs.

scholarly journals Controlling ultrashort intense laser pulses by plasma Bragg gratings with ultrahigh damage threshold

2005 ◽  
Vol 23 (4) ◽  
pp. 417-421 ◽  
Author(s):  
H.-C. WU ◽  
Z.-M. SHENG ◽  
Q.-J. ZHANG ◽  
Y. CANG ◽  
J. ZHANG
Keyword(s):  
Pulse Compression ◽  
Photonic Band Gap ◽  
Damage Threshold ◽  
Laser Pulses ◽  
Intense Laser ◽  
Optical Elements ◽  
Speed Reduction ◽  
Particle In Cell ◽  
Coupled Mode ◽  
Intense Laser Pulses

Propagation of ultrashort intense laser pulses in a plasma Bragg grating induced by two counterpropagating laser pulses has been investigated. Such a plasma grating exhibits an ultrawide photonic band gap, near which strong dispersion appears. It is found that the grating dispersion dominates the dispersion of background plasma by several orders of magnitude. Particle-in-cell (PIC) simulations show light speed reduction, pulse stretching, and chirped pulse compression in the plasma grating. The nonlinear coupled-mode theory agrees well with the PIC results. Because the plasma grating has a much higher damage threshold than the ordinary optical elements made of metal or dielectric, it can be a novel tool for controlling femtosecond intense laser pulses.

scholarly journals Holographic Optical Elements to Generate Achromatic Vortices with Ultra-Short and Ultra-Intense Laser Pulses

10.5772/66314 ◽  
2017 ◽  
Author(s):  
María-Victoria Collados ◽  
Iñigo J. Sola ◽  
Julia Marín-Sáez ◽  
Warein Holgado ◽  
Jesús Atencia
Keyword(s):  
Laser Pulses ◽  
Intense Laser ◽  
Optical Elements ◽  
Holographic Optical Elements ◽  
Intense Laser Pulses

Theory of three-dimensional alignment by intense laser pulses

2008 ◽  
Vol 128 (15) ◽  
pp. 154313 ◽  
Author(s):  
Maxim Artamonov ◽  
Tamar Seideman
Keyword(s):  
Three Dimensional ◽  
Laser Pulses ◽  
Intense Laser ◽  
Intense Laser Pulses

scholarly journals Acceleration of electrons and electromagnetic fields of highly intense laser pulses

2010 ◽  
Vol 28 (1) ◽  
pp. 195-201 ◽  
Author(s):  
Stefanie Lourenco ◽  
Nicolas Kowarsch ◽  
Werner Scheid ◽  
P.X. Wang
Keyword(s):  
Electromagnetic Fields ◽  
Three Dimensional ◽  
Laser Pulses ◽  
Laser Frequency ◽  
Intense Laser ◽  
Wave Number ◽  
Finite Plane ◽  
Intense Laser Pulses

AbstractThe acceleration of electrons by very intense lasers in vacuum is studied for different forms of laser pulses: finite plane and three-dimensional laser pulses. The latter case is treated by introducing an approximation of the laser frequency as a function of the Cartesian components of the wave number. Various examples which lead to high accelerations of electrons are given.

scholarly journals Laser-induced damage thresholds of ultrathin targets and their constraint on laser contrast in laser-driven ion acceleration experiments

2020 ◽  
Vol 8 ◽  
Author(s):  
Dahui Wang ◽  
Yinren Shou ◽  
Pengjie Wang ◽  
Jianbo Liu ◽  
Zhusong Mei ◽  
...  
Keyword(s):  
Damage Threshold ◽  
Wide Band ◽  
Laser Pulses ◽  
Laser Damage Threshold ◽  
Single Shot ◽  
Bulk Materials ◽  
Free Standing ◽  
Wide Band Gap ◽  
Different Types ◽  
Laser Induced Damage

Abstract Single-shot laser-induced damage threshold (LIDT) measurements of multi-type free-standing ultrathin foils were performed in a vacuum environment for 800 nm laser pulses with durations τ ranging from 50 fs to 200 ps. The results show that the laser damage threshold fluences (DTFs) of the ultrathin foils are significantly lower than those of corresponding bulk materials. Wide band gap dielectric targets such as SiN and formvar have larger DTFs than semiconductive and conductive targets by 1–3 orders of magnitude depending on the pulse duration. The damage mechanisms for different types of targets are studied. Based on the measurement, the constrain of the LIDTs on the laser contrast is discussed.

scholarly journals Precise description of single and double ionization of hydrogen molecule in intense laser pulses

2012 ◽  
Vol 137 (4) ◽  
pp. 044112 ◽  
Author(s):  
Mohsen Vafaee ◽  
Firoozeh Sami ◽  
Babak Shokri ◽  
Behnaz Buzari ◽  
Hassan Sabzyan
Keyword(s):  
Hydrogen Molecule ◽  
Laser Pulses ◽  
Double Ionization ◽  
Intense Laser ◽  
Precise Description ◽  
Intense Laser Pulses

scholarly journals Concept of generation of extremely compressed high-energy electron bunches in several interfering intense laser pulses with tilted amplitude fronts

2012 ◽  
Vol 31 (1) ◽  
pp. 23-28 ◽  
Author(s):  
V.V. Korobkin ◽  
M.Yu. Romanovskiy ◽  
V.A. Trofimov ◽  
O.B. Shiryaev
Keyword(s):  
Laser Pulses ◽  
High Energy ◽  
Intense Laser ◽  
High Energy Electron ◽  
Speed Of Light ◽  
Electron Bunches ◽  
Newton Equation ◽  
High Energies ◽  
Neutral Gas ◽  
Intense Laser Pulses

AbstractA new concept of generating tight bunches of electrons accelerated to high energies is proposed. The electrons are born via ionization of a low-density neutral gas by laser radiation, and the concept is based on the electrons acceleration in traps arising within the pattern of interference of several relativistically intense laser pulses with amplitude fronts tilted relative to their phase fronts. The traps move with the speed of light and (1) collect electrons; (2) compress them to extremely high density in all dimensions, forming electron bunches; and (3) accelerate the resulting bunches to energies of at least several GeV per electron. The simulations of bunch formation employ the Newton equation with the corresponding Lorentz force.

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