Results 41 to 50 of about 1,961,575 (288)

Femtosecond laser-induced herringbone patterns [PDF]

Applied Physics A, 2018
Femtosecond laser-induced herringbone patterns are formed on copper (Cu). These novel periodic structures are created following s-polarized, large incident angle, femtosecond laser pulses. Forming as slanted and axially symmetric laser-induced periodic surface structures along the side walls of ablated channels, the result is a series of v-shaped ...
Garcell, Erik M., Lam, Billy, Guo, Chunlei   +2 more
openaire   +2 more sources

Revealing Local Temporal Profile of Laser Pulses of Intensity above 10¹⁴ W/cm²

Sensors, 2023
We demonstrated a method for in situ temporal characterization of an intense femtosecond laser pulse around its focus where the laser intensity exceeds 1014 W/cm2.
Qi Lu, Xiang Zhang, Arnaud Couairon, Yi Liu   +3 more
doaj   +1 more source

High-order harmonic generation driven by chirped laser pulses induced by linear and non linear phenomena [PDF]

, 2016
We present a theoretical study of high-order harmonic generation (HHG) driven by ultrashort optical pulses with different kind of chirps. The goal of the present work is perform a detailed study to clarify the relevant parameters in the chirped pulses to
Ciappina, M F, Neyra, E, Pérez-Hernández, J A, Roso, L, Torchia, G A, Videla, F   +5 more
core   +3 more sources

Thermally-Reconfigurable Quantum Photonic Circuits at Telecom Wavelength by Femtosecond Laser Micromachining [PDF]

, 2015
The importance of integrated quantum photonics in the telecom band resides on the possibility of interfacing with the optical network infrastructure developed for classical communications.
Crespi, Andrea, D'Ambrosio, Vincenzo, Flamini, Fulvio, Magrini, Lorenzo, Mataloni, Paolo, Osellame, Roberto, Rab, Adil S., Ramponi, Roberta, Sciarrino, Fabio, Spagnolo, Nicolò, Zandrini, Tommaso   +10 more
core   +3 more sources

The influence of phase-modulation on femtosecond time-resolved coherent Raman spectroscopy [PDF]

, 1988
The influence of phase-modulation on femtosecond time-resolved coherent Raman scattering is investigated theoretically and experimentally. The coherent Raman signal taken as a function of the spectral position shows unexpected temporal oscillations close
A. Laubereau, G. Mourou, J. Dobler, J.A. Vladmanis, J.E. Rothenberg, J.E. Rothenberg, J.M. Diels, M.C. Nuss, M.D. Levenson, N. Kohles, R. Leonhardt, R. Leonhardt, R.L. Fork, W. Holzapfel, W. Zinth, W. Zinth, W. Zinth, W.Z. Lin, Y. Ishida   +18 more
core   +1 more source

X-ray free electron laser observation of ultrafast lattice behaviour under femtosecond laser-driven shock compression in iron

Scientific Reports, 2023
Over the past century, understanding the nature of shock compression of condensed matter has been a major topic. About 20 years ago, a femtosecond laser emerged as a new shock-driver. Unlike conventional shock waves, a femtosecond laser-driven shock wave
Tomokazu Sano, Tomoki Matsuda, Akio Hirose, Mitsuru Ohata, Tomoyuki Terai, Tomoyuki Kakeshita, Yuichi Inubushi, Takahiro Sato, Kohei Miyanishi, Makina Yabashi, Tadashi Togashi, Kensuke Tono, Osami Sakata, Yoshinori Tange, Kazuto Arakawa, Yusuke Ito, Takuo Okuchi, Tomoko Sato, Toshimori Sekine, Tsutomu Mashimo, Nobuhiko Nakanii, Yusuke Seto, Masaya Shigeta, Takahisa Shobu, Yuji Sano, Tomonao Hosokai, Takeshi Matsuoka, Toshinori Yabuuchi, Kazuo A. Tanaka, Norimasa Ozaki, Ryosuke Kodama   +30 more
doaj   +1 more source

Femtosecond petawatt laser [PDF]

Annalen der Physik, 2014
AbstractThe high‐power femtosecond laser has now become an excellent scientific tool for the study of not only relativistic laser–matter interactions but also scientific applications. The high‐power femtosecond laser depends on the Kerr‐lens modelocking (KLM) and chirped‐pulse amplification (CPA) technique.
Tae Moon Jeong, Jongmin Lee
openaire   +1 more source

The Acoustic Characteristic Investigation of Micro Plasma Shock Wave Obtained by Femtosecond Laser Ablation of Silicon Wafer Surface

MATEC Web of Conferences, 2016
We experimentally investigate the acoustic characteristic of micro plasma shock wave obtained by femtosecond laser ablation of silicon wafer surface using F-P optical fiber acoustic sensor with anti electromagnetic interference.
Zhong Dong, Li Zhong Ming, Chen Chun, Ruan Ruo Lin   +3 more
doaj   +1 more source

Flap Thickness and the Risk of Complications in Mechanical Microkeratome and Femtosecond Laser In Situ Keratomileusis: A Literature Review and Statistical Analysis

Diagnostics, 2021
Introduction: A recent Cochrane review found no difference in visual acuity outcomes between femtosecond-assisted laser in situ keratomileusis (LASIK) and LASIK using mechanical microkeratomes (MMKs).
Piotr Kanclerz, Ramin Khoramnia
doaj   +1 more source

Response of graphene to femtosecond high-intensity laser irradiation

, 2011
We study the response of graphene to high-intensity 10^11-10^12 Wcm^-2, 50-femtosecond laser pulse excitation. We establish that graphene has a fairly high (~3\times10^12Wcm^-2) single-shot damage threshold.
Cormode, Daniel, LeRoy, Brian J., Newhouse-Illige, Ty, Reynolds, Collin, Roberts, Adam, Sandhu, Arvinder S.   +5 more
core   +1 more source