Double walled carbon nanotubes as ultrafast optical switches

Kamaraju, N.; Kumar, Sunil; Kim, Y. A.; Hayashi, T.; Muramatsu, H.; Endo, M.; Sood, A. K.
August 2009
Applied Physics Letters;8/24/2009, Vol. 95 Issue 8, p081106
Academic Journal
Pristine and molybdenum filled double walled carbon nanotubes (DWNTs) suspended in D2O show excellent ultrafast optical switching properties investigated through femtosecond Z-scan and degenerate pump-probe method using 50 fs pulses with central photon energy of 1.57 eV. For pristine-DWNT, the two photon absorption coefficient, β and nonlinear refraction coefficient, n2 are 4.9×10-8 cm/W, and 9.5×10-11 cm2/W, respectively, which yield one photon figure of merit, W=133 and two photon figure of merit, T=0.4. The degenerate pump-probe measurements show strong photoinduced bleaching with biexponential decay with time constants ∼150 and 600 fs.


Related Articles

  • Measurement of extraction and absorption parameters in GaN-based photonic-crystal light-emitting diodes. Matioli, Elison; Fleury, Blaise; Rangel, Elizabeth; Hu, Evelyn; Speck, James; Weisbuch, Claude // Journal of Applied Physics;Mar2010, Vol. 107 Issue 5, p053114-1 

    The light extraction efficiency of photonic-crystal (PhC) light-emitting diodes (LEDs) relies on the competition between the PhC extraction and dissipation mechanisms of the guided light within the LED. This work presents the experimental determination of the PhC extraction length of each guided...

  • Functionalized single wall carbon nanotube sensor in a perturbed microwave resonant cavity based toxin/pollutant gas pressure sensor. Tooski, S. B. // Journal of Applied Physics;Feb2010, Vol. 107 Issue 3, p034315 

    The Vlasov and Maxwell’s equations are established and solved numerically to describe the effects of toxin/pollutant gas pressure and functionalized single wall carbon nanotube (SWCNT) sensor in a perturbed microwave resonant cavity. The dependence of the absorption coefficient on...

  • High-power ultrafast thin disk laser oscillators and their potential for sub-100-femtosecond pulse generation. Südmeyer, T.; Kränkel, C.; Baer, C. R. E.; Heckl, O. H.; Saraceno, C. J.; Golling, M.; Peters, R.; Petermann, K.; Huber, G.; Keller, U. // Applied Physics B: Lasers & Optics;Oct2009, Vol. 97 Issue 2, p281 

    Ultrafast thin disk laser oscillators achieve the highest average output powers and pulse energies of any mode-locked laser oscillator technology. The thin disk concept avoids thermal problems occurring in conventional high-power rod or slab lasers and enables high-power TEM00 operation with...

  • Blink and you'll miss it. Blackman, Greg // Electro Optics;Apr2012, Issue 222, p20 

    The article discusses the benefits of ultrafast lasers and the advantages that femtosecond lasers provide over picosecond devices. It notes that semiconductor-related sectors and micro-electronics are potential markets for ultrafast laser technology due to high precision requirements. It cites...

  • Microstructuring Tools for Sheet Bulk Metal Forming - A Designated Application for Picosecond Laser. Häfner, T.; Reg, Y.; Hetzner, H.; Schmidt, M. // Journal of Laser Micro / Nanoengineering;2013, Vol. 8 Issue 1, p39 

    In addition to coatings, microstructures can increase abrasion-resisting quality of sheet bulk metal forming tools by influencing friction conditions. The use of ultrashort pulsed lasers offers a possibility for manufacturing flexible microstructures with very high precision. Thus the processing...

  • Ultrafast rerouting of light via slow modes in a nanophotonic directional coupler. Kampfrath, T.; Beggs, D. M.; White, T. P.; Burresi, M.; van Oosten, D.; Krauss, T. F.; Kuipers, L. // Applied Physics Letters;6/15/2009, Vol. 94 Issue 24, p241119 

    We demonstrate that two coupled photonic-crystal waveguides can route two subsequently arriving light pulses to different output ports even though the pulses are only 3 ps apart. This rerouting of light is due to an ultrafast shift in the transmittance spectrum triggered by the generation of...

  • Two-dimensional plasma grating by non-collinear femtosecond filament interaction in air. Liu, Jia; Li, Wenxue; Pan, Haifeng; Zeng, Heping // Applied Physics Letters;10/10/2011, Vol. 99 Issue 15, p151105 

    We experimentally demonstrated that two-dimensional (2D) plasma gratings could be generated in air by nonlinear interaction of three femtosecond filaments. The intensity interference of non-collinearly overlapped filaments was self-projected along a relatively long distance and accompanied with...

  • Spectral dependence of time-resolved photoreflectance of InN epitaxial films. Tsong-Ru Tsai; Cheng-Yu Chang; Chih-Wei Kuo; Jih-Shang Hwang; Tai-Yuan Lin; Shangjr Gwo // Applied Physics Letters;10/5/2009, Vol. 95 Issue 14, p142108 

    Femtosecond pulses at wavelengths ranging from 750 to 900 nm (1.38–1.65 eV) were used in the excitation and probing of ultrafast carrier dynamics in InN epitaxial films. Experimental results show that the hot electron relaxation rate increases with increasing electron energy, which is...

  • Direct femtosecond laser ablation of copper with an optical vortex beam. Anoop, K. K.; Fittipaldi, R.; Rubano, A.; Wang, X.; Paparo, D.; Vecchione, A.; Marrucci, L.; Bruzzese, R.; Amoruso, S. // Journal of Applied Physics;2014, Vol. 116 Issue 11, p113102-1 

    Laser surface structuring of copper is induced by laser ablation with a femtosecond optical vortex beam generated via spin-to-orbital conversion of the angular momentum of light by using a q-plate. The variation of the produced surface structures is studied as a function of the number of pulses,...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics