Observation of back-surface reflected luminescence in GaAs excited by ultrashort pulses

Wen, X. M.; Smith, T. A.; Ghiggino, K. P.; Dao, L. V.; Hannaford, P.
March 2009
Applied Physics Letters;3/9/2009, Vol. 94 Issue 10, pN.PAG
Academic Journal
Multiple peaks observed in the temporal evolution of the luminescence of GaAs excited by an ultrashort pulse are attributed to the effect of back-surface reflection. The luminescence components originating from the direct emission and the back-surface reflection are well distinguished using up-conversion luminescence. At an appropriately high excitation energy a sharp peak in the luminescence evolution is observed in a self-assembled InGaAs/GaAs quantum dot sample, which is attributed to stimulated emission excited by the back-surface reflection.


Related Articles

  • The effect of intensity of excitation on CdSe/ZnS quantum dots: Opportunities in luminescence sensing. Sutter, Jens U.; Birch, David J. S.; Rolinski, Olaf J. // Applied Physics Letters;1/10/2011, Vol. 98 Issue 2, p021108 

    We report changes in the photophysical properties of core-shell type CdSe/ZnS quantum dots (QDs) under optical irradiation. QDs either in aqueous solution or immobilized in a silica sol gel matrix have been excited at different wavelengths and fluxes. Illumination of the sample with 140 fs 700...

  • Role of the wetting layer in the carrier relaxation in quantum dots. Sanguinetti, S.; Watanabe, K.; Tateno, T.; Wakaki, M.; Koguchi, N.; Kuroda, T.; Minami, F.; Gurioli, M. // Applied Physics Letters;7/22/2002, Vol. 81 Issue 4, p613 

    We present picosecond time resolved photoluminescence measurements of GaAs/AlGaAs quantum dot structures—grown by modified droplet epitaxy—where no wetting layer is connecting the dots. We find a fast carrier relaxation time (30 ps) to the dot ground state, which becomes even...

  • Athermal luminescence of a tungsten surface irradiated with laser pulses. Banishev, A. F.; Panchenko, V. Ya.; Shishkov, A. V. // Physics of the Solid State;Sep99, Vol. 41 Issue 9, p1408 

    An investigation of athermal luminescence triggered at a tungsten surface by thermal deformations produced by laser pulses is reported. The spectral composition and time dependence of individual spectral components of the luminescence are investigated. Oscillations of the luminescence intensity...

  • Theoretical study on quantum control of photodissociation and photodesorption dynamics by femtosecond chirped laser pulses. Mishima, Kenji; Yamashita, Koichi // Journal of Chemical Physics;4/22/1999, Vol. 110 Issue 16, p7756 

    We have theoretically studied the effect of chirping one-photon incident laser pulses on (I) the branching ratio of the HOD molecule in the photochemical reaction D+OH←HOD→H+OD and (II) the UV photodesorption dynamics of NH[SUB3] and ND[SUB3] from Cu(111). As was predicted in our...

  • Passive mode-locking in 1.3 μm two-section InAs quantum dot lasers. Huang, Xiaodong; Stintz, A.; Li, Hua; Lester, L. F.; Cheng, Julian; Malloy, K. J. // Applied Physics Letters;5/7/2001, Vol. 78 Issue 19, p2825 

    Passive mode locking was achieved at 1.3 μm in oxide-confined, two-section, bistable quantum dot (QD) lasers with an integrated intracavity QD saturable absorber. Fully mode-locked pulses at a repetition rate of 7.4 GHz with a duration of 17 ps were observed under appropriate bias conditions....

  • Temperature dependence of pulse duration in a mode-locked quantum-dot laser. Cataluna, M. A.; Viktorov, E. A.; Mandel, Paul; Sibbett, W.; Livshits, D. A.; Weimert, J.; Kovsh, A. R.; Rafailov, E. U. // Applied Physics Letters;3/5/2007, Vol. 90 Issue 10, p101102 

    The authors demonstrate, experimentally and theoretically, that in a mode-locked two-section quantum-dot laser, the pulse duration decreases with temperature. The primary cause is the increase of carrier capture/escape rates with temperature that leads to faster absorption recovery.

  • Low-loss quantum-dot-based saturable absorber for efficient femtosecond pulse generation. Lagatsky, A. A.; Bain, F. M.; Brown, C. T. A.; Sibbett, W.; Livshits, D. A.; Erbert, G.; Rafailov, E. U. // Applied Physics Letters;12/3/2007, Vol. 91 Issue 23, p231111 

    We report the efficient generation of femtosecond pulses from a diode-pumped solid-state laser that has been passively mode locked using a quantum-dot-based saturable absorber. Average output powers up to 1.15 W and transform-limited pulses as short as 114 fs were obtained around 1040 nm with a...

  • Ru(bipy)3Cl2 luminescence as optical step signal for detector testing. Brettel, K.; Schlodder, E. // Review of Scientific Instruments;Apr88, Vol. 59 Issue 4, p670 

    The luminescence of tris (2, 2'-bipyridyl) ruthenium (II)chloride [Ru(bipy)[sub 3]Cl[sub 2]] excited by picosecond-laser pulses is introduced as an optical step signal for testing of the time response of optical detection systems in the time range ora few nanoseconds.

  • Dynamic View on Nanostructures: A Technique for Time Resolved Optical Luminescence using Synchrotron Light Pulses at SRC, APS, and CLS. Heigl, F.; Jürgensen, A.; Zhou, X.-T.; Lam, S.; Murphy, M.; Ko, J. Y. P.; Sham, T. K.; Rosenberg, R. A.; Gordon, R.; Brewe, D.; Regier, T.; Armelao, L. // AIP Conference Proceedings;2007, Vol. 879 Issue 1, p1202 

    We present an experimental technique using the time structure of synchrotron radiation to study time resolved X-ray excited optical luminescence. In particular we are taking advantage of the bunched distribution of electrons in a synchrotron storage ring, giving short x-ray pulses (10–102...


Read the Article


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

Try another library?
Sign out of this library

Other Topics