Zobrazeno 1 - 10
of 346
pro vyhledávání: '"Torrisi, F."'
Autor:
Mezzapesa, F. P., Garrasi, K., Schmidt, J., Salemi, L., Pistore, V., Li, L., Davies, A. G., Linfield, E. H., Riesch, M., Jirauschek, C., Carey, T., Torrisi, F., Ferrari, A. C., Vitiello, M. S.
The ability to engineer quantum-cascade-lasers (QCLs) with ultrabroad gain spectra and with a full compensation of the group velocity dispersion, at Terahertz (THz) frequencies, is a fundamental need for devising monolithic and miniaturized optical f
Externí odkaz:
http://arxiv.org/abs/2011.11491
Akademický článek
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Autor:
Karagiannidis, P. G., Hodge, S. A., Lombardi, L., Tomarchio, F., Decorde, N., Milana, S., Goykhman, I., Su, Y., Mesite, S. V., Johnstone, D. N., Leary, R. K., Midgley, P. A., Pugno, N. M., Torrisi, F., Ferrari, A. C.
Publikováno v:
ACS Nano, 11, 2742 (2017)
We report the exfoliation of graphite in aqueous solutions under high shear rate [$\sim10^8s^{-1}$] turbulent flow conditions, with a 100\% exfoliation yield. The material is stabilized without centrifugation at concentrations up to 100 g/L using car
Externí odkaz:
http://arxiv.org/abs/1611.04467
Akademický článek
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Autor:
Purdie, D., Popa, D., Wittwer, V. J., Jiang, Z., Bonacchini, G., Torrisi, F., Milana, S., Lidorikis, E., Ferrari, A. C.
Publikováno v:
Appl. Phys. Lett. 106, 253101 (2015)
We combine a graphene mode-locked oscillator with an external compressor and achieve~29fs pulses with~52mW average power. This is a simple, low-cost, and robust setup, entirely fiber based, with no free-space optics, for applications requiring high t
Externí odkaz:
http://arxiv.org/abs/1504.01682
Autor:
Woodward, R. I., Howe, R. C. T., Runcorn, T. H., Hu, G., Torrisi, F., Kelleher, E. J. R., Hasan, T.
Publikováno v:
Opt. Express 23, 20051 (2015)
We fabricate a free-standing molybdenum diselenide (MoSe2) saturable absorber by embedding liquid-phase exfoliated few-layer MoSe2 flakes into a polymer film. The MoSe2-polymer composite is used to Q-switch fiber lasers based on ytterbium (Yb), erbiu
Externí odkaz:
http://arxiv.org/abs/1503.08003
Autor:
Mary, R., Beecher, S. J., Brown, G., Torrisi, F., Milana, S., Popa, D., Hasan, T., Sun, Z., Lidorikis, E., Ohara, S., Ferrari, A. C., Kar, A. K.
Publikováno v:
Optics Express 21, 7943 (2013)
We fabricate a saturable absorber mirror by coating a graphene film on an output coupler mirror. This is then used to obtain Q-switched mode-locking from a diode pumped linear cavity waveguide laser inscribed in Ytterbium-doped Bismuthate Glass, with
Externí odkaz:
http://arxiv.org/abs/1212.3401
Autor:
Lagatsky, A. A., Sun, Z., Kulmala, T. S., Sundaram, R. S., Milana, S., Torrisi, F., Antipov, O. L., Lee, Y., Ahn, J. H., Brown, C. T. A., Sibbett, W., Ferrari, A. C.
Publikováno v:
Appl. Phys. Lett. 102, 013113 (2013)
We report a 2\mu m ultrafast solid-state Tm:Lu2O3 laser, mode-locked by single-layer graphene, generating transform-limited~410fs pulses, with a spectral width~11.1nm at 2067nm. The maximum average output power is 270mW, at a pulse repetition frequen
Externí odkaz:
http://arxiv.org/abs/1210.7042
Autor:
Zhang, M., Kelleher, E. J. R., Torrisi, F., Sun, Z., Hasan, T., Popa, D., Wang, F., Ferrari, A. C., Popov, S. V., Taylor, J. R.
Publikováno v:
Optics Express 20, 25077 (2012)
We demonstrate mode-locking of a thulium-doped fiber laser operating at 1.94\mu m, using a graphene-based saturable absorber. The laser outputs 3.6ps pulses, with~0.4nJ energy and an amplitude fluctuation~0.5%, at 6.46MHz. This is a simple, low-cost,
Externí odkaz:
http://arxiv.org/abs/1208.1804
Autor:
Torrisi, F., Hasan, T., Wu, W., Sun, Z., Lombardo, A., Kulmala, T., Hshieh, G. W., Jung, S. J., Bonaccorso, F., Paul, P. J., Chu, D. P., Ferrari, A. C.
Publikováno v:
ACS Nano 6, 2992 (2012)
We demonstrate ink-jet printing as a viable method for large area fabrication of graphene devices. We produce a graphene-based ink by liquid phase exfoliation of graphite in N-Methylpyrrolidone. We use it to print thin-film transistors, with mobiliti
Externí odkaz:
http://arxiv.org/abs/1111.4970