Infoscience

Journal article

Direct observation of new transitions in the absorption spectra of a V-groove quantum wire waveguide

We report on the direct absorption measurement of the polarization selection rules in a V-groove QWR waveguide. Attenuation measurements in a 1 mm long waveguide were performed from 10 K up to room temperature. These measurements yielded the QWR DOS selection rules for lateral (TE) and vertical (TM) confinement directions. 1D heavy-hole like e(n)h(n) subband features were observed in the TE absorption spectra. Effective mass and 4 x 4 k . p models have been used to evaluate the band to band absorption. For TM polarization, no absorption is observed at the e(1)h(1) transition, but a dominant feature appears corresponding to a quasi light-hole transition (e(1)h(7)). An absorption feature is also detected at the e(1)h(2) transition. This is a new genuine QWR transition with no analog in quantum wells: the theoretical analysis shows that it arises both from valence hand mixing at k = 0 and from symmetry breaking at the heterostructure level, despite the mirror symmetry of the structure.

    Keywords: POLARIZATION ANISOTROPY

    Note:

    Ecole Polytech Fed Lausanne, Dept Phys, CH-1015 Lausanne, Switzerland. Martinet, E, Ecole Polytech Fed Lausanne, Dept Phys, CH-1015 Lausanne, Switzerland.

    ISI Document Delivery No.: 303TG

    Times Cited: 7

    Cited Reference Count: 12

    Cited References:

    CRISINEL D, 1999, IN PRESS OPT QUANTUM

    DUPERTUIS MA, IN PRESS

    DUPERTUIS MA, 2000, PHYS STATUS SOLIDI A, V178, P221

    FILIPOWITZ F, 1998, THESIS ECOLE POLYTEC

    FLIPOWITZ F, 1998, P EUR QUANT EL C GLA

    HAMOUDI A, 1997, J APPL PHYS, V81, P6229

    MILLER DAB, 1986, IEEE J QUANTUM ELECT, V22, P6

    ROSSI F, 1996, PHYS REV LETT, V76, P3642

    SIRIGU L, 1999, IN PRESS PHYSICA E

    VOUILLOZ F, 1997, PHYS REV LETT, V78, P1580

    VOUILLOZ F, 1998, PHYS REV B, V57, P12378

    VOULLOZ F, 1998, THESIS ECOLE POLYTEC

    Reference

    • LOEQ-ARTICLE-2000-017

    Record created on 2007-08-31, modified on 2016-08-08

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