Picosecond dynamics of spin-related optical nonlinearities in In[sub x]Ga[sub 1-x]As multiple quantum wells at 1064 nm

Jarasiunas, K.; Gudelis, V.; Aleksiejunas, R.; Sudzius, M.; Iwamoto, S.; Nishioka, M.; Shimura, T.; Kuroda, K.; Arakawa, Y.
February 2004
Applied Physics Letters;2/16/2004, Vol. 84 Issue 7, p1043
Academic Journal
Light-induced absorption and diffraction measurements of resonantly excited 10-nm-width InGaAs multiple quantum wells have been carried out, using circularly polarized beams at 1064 nm. Spin relaxation time τ[sub s]≃280±15 ps has been determined by monitoring dynamics of light absorption bleaching at 0.04 mJ/cm[sup 2], while a nonlinearly compressed spin component in diffraction varied from 220±20 ps to 115±15 ps with excitation. The kinetics of carrier grating with randomized spins allowed the determination of the bipolar diffusion coefficient D=11.5 cm[sup 2]/s, hole mobility of 230 cm[sup 2]/V s, and carrier lifetime τ[sub R]=0.73–1 ns. © 2004 American Institute of Physics.


Related Articles

  • Signal gain due to a polarization coupling in an AlGaAs channel waveguide. Aitchison, J.S.; Kang, Jin U. // Applied Physics Letters;10/23/1995, Vol. 67 Issue 17, p2456 

    Examines the signal gain of picosecond pulses from an orthogonally polarized pump beam in an aluminum gallium arsenide (AlGaAs) channel waveguide. Application of AlGaAs waveguides to all-optical switching; Investigation on the photorefractive materials and nonlinear optical fibers; Factors...

  • Near-field evidence of local polarized emission centers in InGaN/GaN materials. Micheletto, Ruggero; Allegrini, Maria; Kawakami, Yoichi // Applied Physics Letters;11/23/2009, Vol. 95 Issue 21, p211904 

    We study the optical polarization properties of confined structures in InGaN/GaN single quantum well devices. Using a near-field optical setup we investigated the photoluminescence maps with a polarization-modulation method. If the optical emissions have a preferred polarization orientation, our...

  • Coupled wave analysis of anisotropic conical diffraction in doped... Yongyuan Jiang; Yan Li; Sun, Xiudong; Zhou, Zhongxiang; Xu, Kebin // Journal of Applied Physics;9/1/1997, Vol. 82 Issue 5, p2017 

    Studies three anisotropic diffraction cones in doped (K0.5Na0.5)02(Sr0.61Ba0.39)0.9Nb2O6 crystals with two extraordinary polarized incident beams where the c axis is parallel or perpendicular to the incident plane. Cross-diffraction process; Photorefractive multiwave interaction caused by the...

  • The HERMES internal polarized deuterium gas target. Henoch, Mark // AIP Conference Proceedings;2000, Vol. 549 Issue 1, p666 

    The HERMES experiment (HERa MEasurement of Spin) at DESY uses the HERA polarized lepton beato in combination with the polarized internal target technique in order to determine the spin dependent structure functions of the proton and neutron via deep-inelastic scattering. The HERMES target...

  • Free-space transient magneto-optic sampling. Riordan, J.A.; Sun, F.G. // Applied Physics Letters;9/15/1997, Vol. 71 Issue 11, p1452 

    Examines the free-space magneto-optic sampling system to measure the transient magnetic component of a freely propagating terahertz (THz) beam. Difference between magneto-optic sampling geometry and electro-optic sampling geometry; Use of free-space magneto-optic sampling technique; Waveform of...

  • The Bochum Polarized Target. Reicherz, G.; Goertz, S.; Harmsen, J.; Heckmann, J.; Meier, A.; Meyer, W.; Radtke, E. // AIP Conference Proceedings;2001, Vol. 570 Issue 1, p896 

    Our group is constructing a polarized deuteron target system for a measurement of &Drarr;(↘p)T reaction at low energies. If we assume that the incident energy of deuteron beam is 20 MeV, and its intensity is 1 nA, required specifications to the target system are the polarization is larger...

  • Recent beam development for nuclear science at the MIT-bates linear accelerator center. Wang, Fuhua; Farkhondeh, Manouchehr; Franklin, Wilbur A.; Jacobs, Kenneth D.; van der Laan, Jan B.; Tschalaer, Christoph; Zwart, G. Townsend // AIP Conference Proceedings;2002, Vol. 610 Issue 1, p1012 

    During the past two years, two sets of high priority nuclear physics experiments, SAMPLE, and part of the Out of Plane Spectrometer (OOPS) program have been completed at the MIT-Bates Laboratory. Good progress is also being made on the next major program, the Bates Large Acceptance Spectrometer...

  • A Study of Polarized Proton Acceleration in J-PARC. Luccio, A. U.; Bai, M.; Roser, T.; Molodojentsev, A.; Ohmori, C.; Sato, H.; Hatanaka, K. // AIP Conference Proceedings;2007, Vol. 915 Issue 1, p944 

    We have studied the feasibility of polarized proton acceleration in rhe J-PARC accelerator facility, consisting of a 400 MeV linac, a 3 GeV rapid cycling synchrotron (RCS) and a 50 GeV synchrotron (MR). We show how the polarization of the beam can be preserved using an rf dipole in the RCS and...

  • First Photo-Pion Double Polarization Experiments Using Polarized Hvector Dvector at LEGS. Hoblit, S.; Ardashev, K.; Bade, C.; Blecher, M.; Cacace, C.; Caracappa, A.; Cichocki, A.; Commeaux, C.; d'Angelo, A.; Deininger, R.; Didelez, J.-P.; Gibson, C.; Hicks, K.; Honig, A.; Kageya, T.; Khandaker, M.; Kistner, O.; Lehmann, A.; Lincoln, F. // AIP Conference Proceedings;2003, Vol. 675 Issue 1, p651 

    We report preliminary results of π photo-production using polarized γ beams and a polarized HD target. Four observables can be extracted simultaneously from the data, the cross section, the beam asymmetry Σ, and the double-polarization observables G and E. The latter determines the GDH...


Read the Article


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

Try another library?
Sign out of this library

Other Topics