Quantum dot lasers by Patel, R

Subjects: “…Quantum Dot Lasers…”

Dynamics of single InGaN quantum dots by Taylor, R, Robinson, J, Rice, J, Jarjour, A, Smith, J, Oliver, R, Briggs, G, Kappers, M, Humphreys, C, Arakawa, Y

“…Decay dynamics for single InGaN quantum dots are presented using time-resolved photoluminescence. …”

Carrier storage and capture dynamics in quantum-dot heterostructures by Smith, J, Dalgarno, P, Urbaszek, B, McGhee, E, Buller, G, Nott, G, Warburton, R

Tuning biexciton binding and antibinding in core/shell quantum dots by McDonald, P, Tyrrell, E, Shumway, J, Smith, J, Galbraith, I

Dark exciton decay dynamics of a semiconductor quantum dot by Dalgarno, P, Smith, J, Gerardot, B, Govorov, A, Karrai, K, Petroff, P, Warburton, R

“…We report measurements of the exciton decay dynamics of a single self-assembled quantum dot following non-resonant excitation. The singly charged exciton, the trion, exhibits a simple one component exponential decay corresponding to radiative recombination. …”

Effective mass modeling of excitons in type-II quantum dot heterostructures by Tyrrell, E, Smith, J

Dark exciton signatures in time-resolved photoluminescence of single quantum dots by Smith, J, Dalgarno, P, Warburton, R, Gerardot, B, Petroff, P

“…Time-resolved photoluminescence of single charge tuneable quantum dots allows us to probe the differences in recombination dynamics between neutral and negatively charged excitons. …”

Time-resolved dynamics in single InGaN quantum dots by Robinson, J, Rice, J, Jarjour, A, Smith, J, Taylor, R, Oliver, R, Briggs, G, Kappers, M, Humphreys, C, Arakawa, Y

Dynamics of bright and dark excitons in a self-assembled quantum dot by Dalgarno, P, Ediger, M, Smith, J, Warburton, R, Karrai, K, Govorov, A, Gerardot, B, Petroff, P

“…We report on a spin-flip process in a charge tunable quantum dot in which a non-radiative dark exciton, with angular momentum L = 2, becomes a radiative bright exciton, L = 1, through interactions with a Fermi sea in an n-doped back contact. …”

Voltage control of the spin dynamics of an exciton in a semiconductor quantum dot. by Smith, J, Dalgarno, P, Warburton, R, Govorov, A, Karrai, K, Gerardot, B, Petroff, P

“…We report the observation of a spin-flip process in a quantum dot whereby a dark exciton with total angular momentum L = 2 becomes a bright exciton with L = 1. …”

Luminescence properties of isolated InGaN/GaN quantum dots by Martin, R, Edwards, P, Taylor, R, Rice, J, Na, J, Robinson, J, Smith, J, Liu, C, Watson, I

Investigation of the internal heterostructure of highly luminescent quantum dot#quantum well nanocrystals by Santra, P, Viswanatha, R, Daniels, S, Pickett, N, Smith, J, O'Brien, P, Sarma, D

“…In this paper, we report on the growth and characterization of quantum dot-quantum well nanostructures with photoluminescence (PL) that is tunable over the visible range. …”

Optically induced hybridization of a quantum dot state with a filled continuum. by Dalgarno, P, Ediger, M, Gerardot, B, Smith, J, Seidl, S, Kroner, M, Karrai, K, Petroff, P, Govorov, A, Warburton, R

“…We present an optical signature of a hybridization between a localized quantum dot state and a filled continuum. Radiative recombination of the negatively charged trion in a single quantum dot leaves behind a single electron. …”

Investigation of the internal heterostructure of highly luminescent quantum dot-quantum well nanocrystals. by Santra, P, Viswanatha, R, Daniels, S, Pickett, N, Smith, J, O'Brien, P, Sarma, D

“…In this paper, we report on the growth and characterization of quantum dot-quantum well nanostructures with photoluminescence (PL) that is tunable over the visible range. …”

Photoluminescence studies of exciton recombination and dephasing in single InGaN quantum dots by Rice, J, Robinson, J, Smith, J, Jarjour, A, Taylor, R, Oliver, R, Briggs, G, Kappers, M, Yasin, S, Humphreys, C

Time-integrated and time-resolved photoluminescence studies of InGaN quantum dots by Robinson, J, Rice, J, Jarjour, A, Smith, J, Taylor, R, Oliver, R, Briggs, G, Kappers, M, Humphreys, C, Yasin, S, Arakawa, Y

“…We present studies of the optical transitions in InGaN quantum dots (QDs). Spatially-resolved micro-photoluminescence (mu-PL) of single InGaN QDs reveals very sharp, clearly-defined peaks that are characteristic of strongly-confined carriers. …”

Absorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dot by Seidl, S, Kroner, M, Dalgarno, P, Hogele, A, Smith, J, Ediger, M, Gerardot, B, Garcia, J, Petroff, P, Karrai, K, Warburton, R

“…We have performed detailed photoluminescence (PL) and absorption spectroscopy on the same single self-assembled quantum dot in a charge-tunable device. The transition from neutral to charged exciton in the PL occurs at a more negative voltage than the corresponding transition in absorption. …”

Ultrafast exciton dynamics in Type II ZnTe-ZnSe colloidal quantum dots. by Cadirci, M, Stubbs, S, Fairclough, S, Tyrrell, E, Watt, A, Smith, J, Binks, D

“…Ultrafast transient absorption spectroscopy is used to investigate the exciton dynamics of Type II ZnTe-ZnSe core-shell colloidal quantum dots. Surface-trapping is shown to occur within a few picosecond for hot electrons and with a few 10s of picoseconds for electrons cooled to the band-edge, and is the dominant process in the decay of the band-edge bleach for well-stirred samples pumped at moderate powers. …”

Controlling the emission from semiconductor quantum dots using ultra-small tunable optical microcavities by Di, Z, Jones, H, Dolan, P, Fairclough, S, Wincott, M, Fill, J, Hughes, G, Smith, J

“…We report the control of spontaneous emission from CdSe/ZnS core-shell quantum dots coupled to novel open-access optical microcavities. …”

Controlled generation of neutral, negatively charged and positively charged excitons in the same single quantum dot by Ediger, M, Dalgarno, P, Smith, J, Warburton, R, Karrai, K, Gerardot, B, Petroff, P

“…We report the generation of neutral, negatively charged and positively charged excitons in the same single InAs quantum dot in a controlled manner. The control parameters of the respective excitons are a vertical electric field, applied to a capacitor-like structure in which the quantum dots are embedded, and optical pump power. …”