TITLE

Optical properties of InP/GaInP quantum-dot laser structures

AUTHOR(S)
Lewis, G. M.; Lutti, J.; Smowton, P. M.; Blood, P.; Krysa, A. B.; Liew, S. L.
PUB. DATE
September 2004
SOURCE
Applied Physics Letters;9/13/2004, Vol. 85 Issue 11, p1904
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have grown InP quantum dots with different rates and on substrates with different orientations. The growth conditions have a major influence on the form of the gain spectrum. Using a high growth rate on a 10° off (100) substrate we obtain a broad gain spectrum due to contributions from a bimodal dot size distribution whereas a sample containing mostly small dots, produced using (211)B substrates, has a narrower gain spectrum centered at a shorter wavelength of ∼700–710 nm. The modal gain saturates at a magnitude significantly smaller than the modal absorption, nevertheless the measured values of modal gain are sufficient to sustain laser action, and structures grown at high growth rate on 10° off (100) substrates are capable of providing laser devices operating in the region of 750 nm.
ACCESSION #
14434629

 

Related Articles

  • Intraband spectroscopy and band offsets of colloidal II-VI core/shell structures. Pandey, Anshu; Guyot-Sionnest, Philippe // Journal of Chemical Physics;9/14/2007, Vol. 127 Issue 10, p104710 

    The interband and intraband spectra of colloidal II-VI CdS and CdSe quantum dot cores and CdS/ZnSe, CdS/CdSe, CdSe/CdS, and CdSe/ZnSe core/shell systems are reported. Infrared absorption peaks between 0.5 and 0.2 eV are observed. The slope of the intraband energy versus the first interband...

  • Optical nonlinearity of monodispersed, capped ZnS quantum particles. Nikesh, V. V.; Dharmadhikari, Aditya; Ono, Hiroshi; Nozaki, Shinji; Kumar, G. Ravindra; Mahamuni, Shailaja // Applied Physics Letters;6/7/2004, Vol. 84 Issue 23, p4602 

    ZnS quantum dots are synthesized by a high-temperature chemical route with narrow size distribution at diameters of 1.4 and 1.8 nm. Significantly small size dispersion of 1.4-nm-sized ZnS quantum dots is vivid from the transmission electron microscopic measurements. The nonlinear absorption is...

  • Gain saturation in InP/GaInP quantum-dot lasers. Lutti, J.; Smowton, P. M.; Lewis, G. M.; Blood, P.; Krysa, A. B.; Lin, J. C.; Houston, P. A.; Ramsay, A. J.; Mowbray, D. J. // Applied Physics Letters;1/3/2005, Vol. 86 Issue 1, p011111 

    We have measured the gain-current and gain-quasi–Fermi level separation characteristics for InP/AlGaInP quantum-dot-laser structures. Saturation of the gain-current characteristics is apparent even though photoluminescence excitation spectroscopy measurements indicate that the 2D states...

  • Decay dynamics of quantum dots influenced by the local density of optical states of two-dimensional photonic crystal membranes. Julsgaard, B.; Johansen, J.; Stobbe, S.; Stolberg-Rohr, T.; Sünner, T.; Kamp, M.; Forchel, A.; Lodahl, P. // Applied Physics Letters;9/1/2008, Vol. 93 Issue 9, p094102 

    We have performed time-resolved spectroscopy on InAs quantum dot ensembles in photonic crystal membranes. The influence of the photonic crystal is investigated by varying the lattice constant systematically. We observe a strong slow down of the quantum dots’ spontaneous emission rates as...

  • Anomalous dynamic characteristics of semiconductor quantum-dot lasers generating on two quantum states. Sokolovskii, G.S.; Cataluna, M.A.; Deryagin, A.G.; Kuchinskii, V.I.; Novikov, I.I.; Maksimov, M.V.; Zhukov, A.E.; Ustinov, V.M.; Sibbett, W.; Rafailov, E.U. // Technical Physics Letters;Jan2007, Vol. 33 Issue 1, p4 

    Dynamics of the emission spectra of semiconductor quantum dot (QD) lasers generating on two quantum states has been experimentally studied. Being pumped with 30-ns current pulses, a QD laser ceased to generate 2–5 ns after switch-on and exhibited a pause up to 10 ns or longer, depending...

  • Lasing characteristics of InAs quantum-dot microdisk from 3 K to room temperature. Ide, Toshihide; Baba, Toshihiko; Tatebayashi, Jun; Iwamoto, Satoshi; Nakaoka, Toshihiro; Arakawa, Yasuhiko // Applied Physics Letters;8/23/2004, Vol. 85 Issue 8, p1326 

    We fabricated a microdisk laser with five-stacked InAs quantum-dot (QD) active region, and demonstrated the lasing operation from 3 K to room temperature by femtosecond pulsed photopumping. At room temperature, the threshold power was estimated to be 0.75 mW, when the influence of the surface...

  • Two-photon absorption in ZnSe and ZnSe/ZnS core/shell quantum structures. Lad, Amit D.; Kiran, P. Prem; More, Deepak; Kumar, G. Ravindra; Mahamuni, Shailaja // Applied Physics Letters;1/28/2008, Vol. 92 Issue 4, p043126 

    The third order nonlinear optical properties of two different sized ZnSe and ZnSe/ZnS quantum dots (QDs) are investigated. The nonlinear absorption is measured at 806 nm using Ti:sapphire 100 fs laser pulses in an open aperture Z-scan setup. Two-photon absorption (2PA) is found to be dominant in...

  • Renormalization of the energy spectrum of quantum dots under vibrational resonance conditions: Persistent hole burning spectroscopy. Kruchinin, S.; Fedorov, A. // Optics & Spectroscopy;Jan2006, Vol. 100 Issue 1, p41 

    A theory of photophysical burning of spectral holes in an inhomogeneously broadened light absorption profile of spherical quantum dots under vibrational resonance conditions is developed. The energy spectrum and the eigenfunctions of polaron-like excitations that arise in a quantum dot when the...

  • Theoretical and experimental studies of stressed nanoparticles of II-VI semiconductors. Ferreira, D. Lourençoni; Silva, F. Oliveira; Viol, L. Cristina de Souza; Licínio, P.; Schiavon, M. Antônio; Alves, J. Luiz Aarestrup // Journal of Chemical Physics;1/7/2010, Vol. 132 Issue 1, p014107 

    A theoretical and experimental study of isolated nanoparticles of II-VI semiconductor materials has been done. Using the framework of the effective mass model, the optical absorption spectrum of distributions of spherical quantum dots, freestanding, and under compressive or tensile stress, has...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics