Results 61 to 70 of about 1,876,370 (217)

Laser-Pulse-Length Effects in Ultrafast Laser Desorption

Analytical Chemistry, 2023
Shortening the laser pulse length opens up new opportunities for laser desorption (LD) of molecules, with benefits for mass spectrometry (MS) sampling and ionization. The capability to ablate any material without the need for an absorbing matrix and the decrease of thermal damage and molecular fragmentation has promoted various applications with very ...
Marco Schmidt, Robert Irsig, Dumitru Duca, Christian Peltz, Johannes Passig, Ralf Zimmermann   +5 more
openaire   +3 more sources

Ultrafast second-Stokes diamond Raman laser [PDF]

Optics Express, 2016
We report a synchronously-pumped femtosecond diamond Raman laser operating with a tunable second-Stokes output. Pumped using a mode-locked Ti:sapphire laser at 840-910 nm with a duration of 165 fs, the second-Stokes wavelength was tuneable from 1082 - 1200 nm with sub-picosecond duration.
Murtagh, Michelle, Lin, Jipeng, Trägårdh, Johanna, Mcconnell, Gail, Spence, David J.   +4 more
openaire   +3 more sources

Progress in ultrafast laser processing and future prospects

Nanophotonics, 2017
The unique characteristics of ultrafast lasers have rapidly revolutionized materials processing after their first demonstration in 1987. The ultrashort pulse width of the laser suppresses heat diffusion to the surroundings of the processed region, which ...
Sugioka Koji
doaj   +1 more source

Purcell Effect in the Stimulated and Spontaneous Emission Rates of Nanoscale Semiconductor Lasers [PDF]

, 2018
Nanoscale semiconductor lasers have been developed recently using either metal, metallo-dielectric or photonic crystal nanocavities. While the technology of nanolasers is steadily being deployed, their expected performance for on-chip optical ...
Fiore, Andrea, Romeira, Bruno
core   +3 more sources

Several new directions for ultrafast fiber lasers [Invited].

Optics Express, 2018
Ultrafast fiber lasers have the potential to make applications of ultrashort pulses widespread - techniques not only for scientists, but also for doctors, manufacturing engineers, and more. Today, this potential is only realized in refractive surgery and
Walter Fu, Logan G. Wright, P. Sidorenko, S. Backus, F. Wise   +4 more
semanticscholar   +1 more source

Ultrafast ytterbium-doped bulk lasers and laser amplifiers [PDF]

Applied Physics B: Lasers and Optics, 1999
We review recent achievements with ultrafast bulk lasers and amplifiers based on Yb:YAG and Yb:glass. Special attention is paid to those aspects of the quasi-three-level nature of these gain media that are important for short-pulse generation. The potential of Yb-doped media for efficient short-pulse generation and amplification is compared to their Nd-
Hönninger, C., Paschotta, R., Zhang, G., Biswal, Subrat, Morier-Genoud, F., Moser, M., Giesen, A., Mourou, Gerard A., Nees, John A., Seeber, W., Johannsen, I., Graf, M., Keller, U., Braun, Arthur R.   +13 more
openaire   +3 more sources

Compact 85 fs frequency doubled 810 nm fiber system with 60 mW of average power

, 2005
We demonstrate a sub-100 fs frequency doubled fiber laser operating at 810 nm. The laser produces 60 mW of average power at a repetition rate of 50 MHz.
Clowes, J., Godfrey, I., Grudinin, A.B., Soh, D.B.S.   +3 more
core   +1 more source

WS2 mode-locked ultrafast fiber laser [PDF]

Scientific Reports, 2015
Graphene-like two dimensional materials, such as WS2 and MoS2, are highly anisotropic layered compounds that have attracted growing interest from basic research to practical applications. Similar with MoS2, few-layer WS2 has remarkable physical properties. Here, we demonstrate for the first time that WS2 nanosheets exhibit ultrafast nonlinear saturable
Mao, Dong, Wang, Yadong, Ma, Chaojie, Han, Lei, Jiang, Biqiang, Gan, Xuetao, Hua, Shijia, Zhang, Wending, Mei, Ting, Zhao, Jianlin   +9 more
openaire   +2 more sources

Temporal and spatiotemporal soliton molecules in ultrafast fibre lasers

Nanophotonics
Ultrafast fibre lasers, characterized by ultrashort pulse duration and broad spectral bandwidth, have drawn significant attention due to their vast potential across a wide range of applications, from fundamental scientific to industrial processing and ...
Mao Ding, Yuan Zichuan, Dai Ke, Chen Yue, Ma Huihui, Ling Qiang, Zheng Jiancheng, Zhang Yusheng, Chen Daru, Cui Yudong, Sun Zhipei, Malomed Boris A.   +11 more
doaj   +1 more source

Electrically driven photonic crystal nanocavity devices

, 2012
Interest in photonic crystal nanocavities is fueled by advances in device performance, particularly in the development of low-threshold laser sources. Effective electrical control of high performance photonic crystal lasers has thus far remained elusive ...
Ellis, Bryan, Haller, Eugene E., Harris, James, Majumdar, Arka, Mayer, Marie A., Petykiewicz, Jan, Sarmiento, Tomas, Shambat, Gary, Vuckovic, Jelena   +8 more
core   +1 more source