Results 31 to 40 of about 1,418,339 (359)

Phase-sensitive seeded modulation instability in passive fiber resonators

Communications Physics, 2022
Modulation instability refers to the sensitivity of dispersive, weakly nonlinear systems to small perturbations and may be used as a source of optical gain.
Florent Bessin, Corentin Naveau, Matteo Conforti, Alexandre Kudlinski, Pascal Szriftgiser, Arnaud Mussot   +5 more
doaj   +1 more source

Hybrid Nanostructures Obtained by Transport and Condensation of Tungsten Oxide Vapours onto CNW Templates

Nanomaterials, 2021
We present hybrid nanomaterial architectures, consisting of carbon nanowalls (CNW) templates decorated with tungsten oxide nanoparticles, synthesized using a mechanism based on tungsten oxide sublimation, vapor transport, followed by vapor condensation ...
Lavinia Gabriela Carpen, Tomy Acsente, Veronica Sătulu, Elena Matei, Sorin Vizireanu, Bogdan Ionuț Biță, Gheorghe Dinescu   +6 more
doaj   +1 more source

Visible submicron microdisk lasers [PDF]

, 2007
The authors describe the performance of submicron microdisk lasers fabricated within InGaP/InGaAlP quantum well material working at room temperature. The smallest lasers, with diameters of approximately 600 nm, feature ultrasmall mode volumes and exhibit
Hong, Ting, Liu, Victor, Scherer, Axel, Vahala, Kerry, Yang, Lan, Zhang, Zhaoyu   +5 more
core   +1 more source

Probing the dispersive properties of optical fibers with an array of femtosecond-written fiber Bragg gratings

Scientific Reports, 2022
We propose an efficient method to determine the effective refractive index of step-index optical fibers from the visible to the mid-IR and thus allowing to infer their dispersive properties over a broad spectral range.
Tommy Boilard, Réal Vallée, Martin Bernier   +2 more
doaj   +1 more source

Facile Fabrication of Hybrid Carbon Nanotube Sensors by Laser Direct Transfer

Nanomaterials, 2021
Ammonia is one of the most frequently produced chemicals in the world, and thus, reliable measurements of different NH3 concentrations are critical for a variety of industries, among which are the agricultural and healthcare sectors.
Anca F. Bonciu, Mihaela Filipescu, Stefan I. Voicu, Thomas Lippert, Alexandra Palla-Papavlu   +4 more
doaj   +1 more source

A comparison of amplitude-phase coupling and linewidth enhancement in semiconductor quantum-well and bulk lasers [PDF]

, 1993
The amplitude-phase coupling factor α (linewidth enhancement factor) is compared for typical semiconductor quantum-well and bulk double heterostructure lasers.
Chen, T. R., Yariv, A., Zhao, B.
core   +1 more source

Analysis of Carbon Contents and Heavy Metals in Coal Samples Using Calibration-free LIBS Technique

Journal of Spectroscopy, 2022
We report a compositional analysis of four coal samples collected from different mines in Pakistan and one Chinese brand. The coal samples were pelletized in the form of a disc and irradiated with a focused laser beam of fundamental (1064 nm) and second (
Muhammad Aamir Israr, Qamar Abbas, Sami Ul Haq, Ali Nadeem   +3 more
doaj   +1 more source

Ultrafast Fiber Laser Emitting at 2.8 µm Based on a SESAM and a Broadband FBG

Photonics, 2023
Ultrafast mid-infrared fiber lasers have been intensely studied in the last decade for the generation of high harmonics, molecular spectroscopy, material processing and remote sensing.
Pascal Paradis, Tommy Boilard, Vincent Fortin, Réal Vallée, Martin Bernier   +4 more
doaj   +1 more source

Advances in small lasers [PDF]

, 2014
M.T.H was supported by an Australian Research council Future Fellowship research grant for this work. M.C.G. is grateful to the Scottish Funding Council (via SUPA) for financial support.Small lasers have dimensions or modes sizes close to or smaller than
A Francois, A Polman, A Tandaechanurat, AFJ Levi, AJC Kuehne, AJC Kuehne, AM Lakhani, B Peng, BK Yap, C Dang, C Karnutsch, C Schneider, C Symonds, C-Y Lu, C-Y Lu, C-YA Ni, C-Z Ning, CM Long, D Li, D O'Carroll, D Saxena, DAB Miller, DJ Bergman, DK Gramotnev, F Van Beijnum, G Shambat, G Tsiminis, GM Yang, H Mizuno, H Wang, H-G Park, I De Leon, IDW Samuel, J Kasprzak, J Klaers, J Leuthold, J Van Campenhout, J-S Tempel, JB Khurgin, JY Suh, K Baumann, K Ding, K Iga, K Leosson, K Takeda, K Yu, L He, M Fujita, M Fukui, M Khajavikhan, M Kuwata-Gonokami, M Langner, M-K Kim, M-K Seo, MA Noginov, Malte C. Gather, Martin T. Hill, MC Gather, MC Gather, MC Gather, MH Huang, MK Smit, MP Nezhad, MS Lebby, MT Hill, MT Hill, MT Hill, N Kirstaedter, O Painter, O Shapira, P Bhattacharya, P-A Blanche, PO Anikeeva, R Chen, R Perahia, R Zia, R-M Ma, R-M Ma, R-M Ma, RF Oulton, S Christopoulos, S Kéna-Cohen, S Nizamoglu, S Riechel, S-H Kwon, S-W Chang, SH Kwon, SKY Tang, SL Chuang, SM Spillane, T Baba, T Kim, T Ubukata, V Dimastrodonato, VI Klimov, W Song, W Zhou, WL Barnes, X Meng, X Meng, XF Li, Y Nishijima, Y Sun, Y-J Lu, YH Lee, Z Zhang, ZB Wang   +106 more
core   +1 more source

Photonic crystal laser sources for chemical detection [PDF]

, 2003
We have realized photonic crystal lasers that permit the introduction of analyte within the peak of the optical field of the lasing mode. We have explored the design compromises for developing such sensitive low-threshold spectroscopy sources, and ...
Lončar, Marko, Qiu, Yueming, Scherer, Axel   +2 more
core   +1 more source