TITLE

Fe-implanted InGaAs terahertz emitters for 1.56 μm wavelength excitation

AUTHOR(S)
Suzuki, Masato; Tonouchi, Masayoshi
PUB. DATE
January 2005
SOURCE
Applied Physics Letters;1/31/2005, Vol. 86 Issue 5, p051104
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have measured the terahertz (THz) radiations from unimplanted and Fe-implanted In0.53Ga0.47As photoconductive switches excited by the femtosecond laser pulse of 1.56 μm wavelength. It has been also observed that the amplitude of the radiated wave form from these photoswitches deviates from linear behavior, and saturates with increase in the power of excitation pulse. Fe implantation to the samples leads to about 1.2 times decrease in the pulse width of radiated THz wave form and 6.5 times reduction in the carrier mobility compared to the unimplanted sample.
ACCESSION #
16345380

 

Related Articles

  • Multi-waveguide excitation in fs laser written waveguide arrays. Szameit, A.; Hartung, H.; Dreisow, F.; Nolte, S.; Tünnermann, A. // Applied Physics B: Lasers & Optics;Mar2007, Vol. 87 Issue 1, p17 

    We introduce a new technique to excite multiple waveguides in fs laser written waveguide arrays. Using a microstructured grating, we were able to couple almost all of the power of the laser beam into multiple waveguides in one- and two-dimensional lattices. Tilting the sample a defined phase...

  • A femtosecond neutron source. Macchi, A. // Applied Physics B: Lasers & Optics;Mar2006, Vol. 82 Issue 3, p337 

    The possibility of using the ultrashort ion bunches produced by circularly polarized laser pulses to drive a source of fusion neutrons with sub-optical cycle duration is discussed. A two-sided irradiation of a deuterated thin foil target produces two counter-moving ion bunches, whose collision...

  • Terahertz Radiation as a Bunch Diagnostic for Laser-Wakefield-Accelerated Electron Bunches. van Tilborg, J.; Schroeder, C. B.; Toth, C.; Esarey, E.; Leemans, W. P. // AIP Conference Proceedings;2006, Vol. 868 Issue 1, p149 

    Experimental results are reported on the temporal and spectral characterization of coherent terahertz (THz) radiation. The radiation is emitted by relativistic electron bunches, which in turn are produced by a laser-driven plasma-based accelerator. As the femtosecond electron bunches exit the...

  • Quantum dynamics of chirped excitation of multimode systems. Yuan, J.M.; Liu, W.-K.; Hayashi, M.T.; Lin, S.H. // Journal of Chemical Physics;2/22/1999, Vol. 110 Issue 8, p3823 

    Investigates the effectiveness of chirped laser pulses in exciting a multimode system, where a vibrational mode is coupled to a large number of bath modes. Solution to the Liouville equation for the model; Roles played by various variables in inducing vibrational excitation; Range of parameters...

  • Terahertz radiation from CdxHg1-xTe photoexcited by femtosecond laser pulses. Krotkus, A.; Adomavčius, R.; Molis, G.; Urbanowicz, A.; Eusebe, H. // Journal of Applied Physics;10/1/2004, Vol. 96 Issue 7, p4006 

    Terahertz radiation from CdxHg1-xTe samples excited by femtosecond Ti:sapphire laser pulses were measured by using an ultrafast photoconductive antenna manufactured from low-temperature grown GaAs. Terahertz fields radiated by the samples of all three investigated alloy compositions with x =0,...

  • Cherenkov Radiation and Pair Production by Particles Traversing Laser Beams. Dremin, I. M. // JETP Letters;8/10/2002, Vol. 76 Issue 3, p151 

    It is shown that Cherenkov radiation can be observed at TESLA in electron collisions with optical laser pulses. The prospects for it to be observed at SLC, LEP, LHC, and RHIC are discussed. The conclusions are compared with results for pair production. © 2002 MAIK “Nauka /...

  • Influence of target system on the charge state, number, and spectral shape of ion beams accelerated by femtosecond high-intensity laser pulses. Schnürer, M.; Ter-Avetisyan, S.; Nickles, P. V.; Andreev, A. A. // Physics of Plasmas;Mar2007, Vol. 14 Issue 3, p033101 

    Specific ion spectra have been obtained by irradiating spherical and planar targets with 40 fs Ti:Sa laser pulses at intensities of ∼1019 W/cm2. From the mass-limited spherical target, strong modulations in the proton/deuteron spectra and a high laser to ion energy conversion originate,...

  • Electron radiography using hot electron jets from sub-millijoule femtosecond laser pulses. Serbanescu, C. G.; Fedosejevs, R. // Applied Physics B: Lasers & Optics;Jun2006, Vol. 83 Issue 4, p521 

    Electron jets produced in the intermediate intensity range of 1015 to 1017 W/cm2 from submillijoule 120 fs Ti:Sapphire laser pulses focused to spots of a few microns in diameter have been characterized. The experimental results show strong emission of hot electrons with energies from 80 keV to...

  • Yrast spectroscopy in 49-51Ti via fusion-evaporation reaction induced by a radioactive beam. Niikura, M.; Ideguchi, E.; Aoi, N.; Baba, H.; Fukuchi, T.; Ichikawa, Y.; Iwasaki, H.; Kubo, T.; Kurokawa, M.; Liu, M.; Michimasa, S.; Ohnishi, T. K.; Onishi, T.; Ota, S.; Shimoura, S.; Suzuki, H.; Suzuki, D.; Wakabayashi, Y.; Yoshida, K.; Zheng, Y. // European Physical Journal A -- Hadrons & Nuclei;Dec2009, Vol. 42 Issue 3, p471 

    In-beam $ \gamma$ -ray spectroscopy of high-spin states in 49-51Ti was performed via the fusion-evaporation reaction using a radioactive beam. By excitation function and $ \gamma$ - $ \gamma$ coincidence analysis, yrast high-spin levels up to I = (21/2-),(11+),(17/2-) in 49-51Ti were determined....

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics