Results 21 to 30 of about 65,629 (304)

The art and science of femtosecond laser writing [PDF]

, 2009
We demonstrate how femtosecond laser writing can challenge common beliefs in optics. Recently discovered phenomena of quill writing related to self-assembled nanostructuring in glasses and non-reciprocal laser writing in crystals are ...
Kazansky, P.G., Kazuyuki Hirao, Hirao, K., Yuri P. Svirko, Svirko, Y.P., Shimotsuma, Y., Yasuhiko Shimotsuma, Peter G. Kazansky, Martynas Beresna, Beresna, Martynas   +9 more
core   +1 more source

Gigahertz femtosecond Cr:ZnS laser [PDF]

Advanced Solid State Lasers, 2014
We demonstrate the first Cr:ZnS laser with a gigahertz pulse repetition rate. The passively mode-locked by the graphene-based mirror laser provides 105 mW output power with 180 fs pulse duration and 110 pJ pulse energy.
Tolstik, Nikolai, Evgeni, Sorokin, Sorokina, Irina T.   +2 more
openaire   +2 more sources

SILICON SURFACE MICROSTRUCTURING BY SINGLE-EXPOSURE FEMTOSECOND DOUBLE LASER PULSE [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2019
Subject of Research. The paper evaluates the possibility of periodic microstructures formation on the silicon surface by single-exposure double femtosecond laser pulse. Method.
E. V. Kuzmin, G. D. Shandybina, D. S. Polyakov, A. A. Samokhvalov   +3 more
doaj   +1 more source

Femtosecond laser ablation of enamel [PDF]

Journal of Biomedical Optics, 2016
The surface topographical, compositional, and structural modifications induced in human enamel by femtosecond laser ablation is studied. The laser treatments were performed using a Yb:KYW chirped-pulse-regenerative amplification laser system (560 fs and 1030 nm) and fluences up to 14  J/cm2.
Quang-Tri, Le, Caroline, Bertrand, Rui, Vilar   +2 more
openaire   +2 more sources

Studying of photoluminescence property of carbazole unit based push-pull oligomers

AIP Advances, 2019
The photoluminescence (PL) property of two push-pull oligomers named C2B and DC2B, comprising of carbazole and difluoroboron β-diketonate units, were probed by many optical tests.
Ying Chen, Ran Lu, Ning Sui, Ye Zhang, Wenyan Wang, Zhi-hui Kang, Ying-hui Wang, Han-zhuang Zhang   +7 more
doaj   +1 more source

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

Fibre Bragg grating fabrication in germanosilicate fibres with 244nm femtosecond laser light

, 2006
The ability to fabricate strong and extraordinarily stable Bragg gratings in any type of fibre using femtosecond laser light has attracted much interest in the recent past. The induced index change has been attributed to glass densification brought about
Banks, D.P., D. P Banks, M. Ibsen, Canning, J., Mills, J.D., Ibsen, M., A. Canagasabey, Canagasabey, A., J. Canning, J. D. Mills   +9 more
core   +1 more source

Sensing with Femtosecond Laser Filamentation

Sensors, 2022
Femtosecond laser filamentation is a unique nonlinear optical phenomenon when high-power ultrafast laser propagation in all transparent optical media. During filamentation in the atmosphere, the ultrastrong field of 1013–1014 W/cm2 with a large distance ranging from meter to kilometers can effectively ionize, break, and excite the molecules and ...
Pengfei Qi, Wenqi Qian, Lanjun Guo, Jiayun Xue, Nan Zhang, Yuezheng Wang, Zhi Zhang, Zeliang Zhang, Lie Lin, Changlin Sun, Liguo Zhu, Weiwei Liu   +11 more
openaire   +3 more sources

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

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