Terahertz plasma wave resonance of two-dimensional electrons in InGaP/InGaAs/GaAs high-electron-mobility transistors

Otsuji, Taiichi; Hanabe, Mitsuhiro; Ogawara, Osamu
September 2004
Applied Physics Letters;9/13/2004, Vol. 85 Issue 11, p2119
Academic Journal
We have observed the frequency dependence of the plasma resonant intensity in the terahertz range for a short gate-length InGaP/InGaAs/GaAs pseudomorphic high-electron-mobility transistor. The plasma resonance excitation was performed by means of interband photoexcitation using the difference-frequency component of a photomixed laser beam. Under sufficient density of two-dimensional (2D) conduction electrons (>1012 cm-2) and a moderate modulation index (the ratio of the density of photoexcited electrons to the initial density of the 2D electrons) we clearly observed the plasma-resonant peaks at 1.9 and 5.8 THz corresponding to the fundamental and third-harmonic resonance at room temperature, which is in good agreement with theory.


Related Articles

  • Role of trapped and nonthermal electron distributions in dust charging currents. Duha, S. S. // Physics of Plasmas;Dec2009, Vol. 16 Issue 12, p123703 

    The expressions for the dust charging current associated with plasma electrons, which follow either the trapped (vortexlike) distribution of Schamel [J. Plasma Phys. 13, 139 (1975)] or the nonthermal distribution of Cairns et al. [Geophys. Res. Lett. 22, 2709 (1995)], are derived. The effects of...

  • Excitation of the centrifugally driven interchange instability in a plasma confined by a magnetic dipole. Levitt, B.; Maslovsky, D.; Mauel, M. E.; Waksman, J. // Physics of Plasmas;May2005, Vol. 12 Issue 5, p055703 

    The centrifugally driven electrostatic interchange instability is excited for the first time in a laboratory magnetoplasma. The plasma is confined by a dipole magnetic field, and the instability is excited when an equatorial mesh is biased to induce a radial current that creates rapid...

  • Energy scaling of quasi-monoenergetic electron beams from laser wakefields driven by 40-TW ultra-short pulses. Maksimchuk, A.; Reed, S.; Naumova, N.; Chvykov, V.; Hou, B.; Kalintchenko, G.; Matsuoka, T.; Nees, J.; Rousseau, P.; Mourou, G.; Yanovsky, V. // Applied Physics B: Lasers & Optics;Nov2007, Vol. 89 Issue 2/3, p201 

    By focusing 40-TW, 30-fs laser pulses to the peak intensity of 1019 W/cm2 onto a supersonic He gas jet, we generate quasi-monoenergetic electron beams for plasma density in the specific range 1.5×1019 cm-3≤ne≤3.5×1019 cm-3. We show that the energy, charge, divergence and...

  • Lagrangian description of nonlinear dust-ion acoustic waves in dusty plasmas. Kourakis, I.; Shukla, P. K. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Jul2004, Vol. 30 Issue 1, p97 

    An analytical model is presented for the description of nonlinear dust-ion-acoustic waves propagating in an unmagnetized, collisionless, three component plasma composed of electrons, ions and inertial dust grains. The formulation relies on a Lagrangian approach of the plasma fluid model. The...

  • Saturation Current Densities at the Critical Point of a Spherical Probe in a Moving Collisional Plasma with Negative Ions or Dust Grains. Kashevarov, A. V. // Technical Physics;Apr2005, Vol. 50 Issue 4, p421 

    The problem is considered of the probe diagnostics of a moving, weakly ionized, collision-dominated plasma containing singly charged negative ions or dust grains (heavy multicharged ions). Based on an asymptotic analysis, expressions are obtained that describe the saturation current densities of...

  • Observation of energetic electron confinement in a largely stochastic reversed-field pinch plasma. Clayton, D. J.; Chapman, B. E.; O'Connell, R.; Almagri, A. F.; Burke, D. R.; Forest, C. B.; Goetz, J. A.; Kaufman, M. C.; Bonomo, F.; Franz, P.; Gobbin, M.; Piovesan, P. // Physics of Plasmas;Jan2010, Vol. 17 Issue 1, p012505 

    Runaway electrons with energies >100 keV are observed with the appearance of an m=1 magnetic island in the core of otherwise stochastic Madison Symmetric Torus [Dexter et al., Fusion Technol. 19, 131 (1991)] reversed-field-pinch plasmas. The island is associated with the innermost resonant...

  • Modulational instability of dust acoustic solitons in multicomponent plasma with kappa-distributed electrons and ions. Gill, T. S.; Bains, A. S.; Bedi, C. // Physics of Plasmas;Jan2010, Vol. 17 Issue 1, p013701 

    In the present investigation the modulational instability (MI) of dust acoustic wave (DAW) in four-component dusty plasma consisting of negative and positive charged dust grains and kappa (κ) distributed electrons and ions is studied. Considering the multifluid plasma model and using the...

  • Nonlinear dust acoustic waves in a charge varying dusty plasma with suprathermal electrons. Tribeche, Mouloud; Bacha, Mustapha // Physics of Plasmas;Jul2010, Vol. 17 Issue 7, p073701 

    Arbitrary amplitude dust acoustic waves in a dusty plasma with a high-energy-tail electron distribution are investigated. The effects of charge variation and electron deviation from the Boltzmann distribution on the dust acoustic soliton are then considered. The dust charge variation makes the...

  • A Plasma-Cathode Electron Source for Focused-Beam Generation in the Fore-Pump Pressure Range. Burdovitsin, V.; Zhirkov, I.; Oks, E.; Osipov, I.; Fedorov, M. // Instruments & Experimental Techniques;Nov/Dec2005, Vol. 48 Issue 6, p761 

    A plasma electron source is described that forms a focused beam in the range of fore-pump pressures. Plasma is generated in a hollow-cathode discharge. Electrons are extracted through a single emission hole in the anode. The source provides an electron-beam current of up to 0.1 A and an energy...


Read the Article


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

Try another library?
Sign out of this library

Other Topics