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Displaying 1-10 of 10 articles from this issue
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Article type: Cover
Pages Cover1-
Published: March 06, 2015
Released on J-STAGE: September 22, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (11K) -
Article type: Index
Pages Toc1-
Published: March 06, 2015
Released on J-STAGE: September 22, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (20K) -
Takayuki YANAGISAWAArticle type: Article
Session ID: IDY2015-14
Published: March 06, 2015
Released on J-STAGE: September 22, 2017
CONFERENCE PROCEEDINGS FREE ACCESSPlanar waveguide solid state lasers have many attractive features such as compactness, loss-insensitive highly-efficient operation, and power scaling along the direction of the width. The few gm thickness of waveguide provides high pumping intensity and high laser gain, and then leads to high intensity laser operation. This geometry is, in particular, useful for an intra-cavity harmonic generation such as green lasers for consumer use. In this paper, we describe the technologies and characteristics of intra-cavity green lasers and investigate de-speckle effects by multiplexing of wavelength.View full abstractDownload PDF (657K) -
Masaki HASEGAWAArticle type: Article
Session ID: IDY2015-15
Published: March 06, 2015
Released on J-STAGE: September 22, 2017
CONFERENCE PROCEEDINGS FREE ACCESSOverview semiconductor colloidal quantum dot and rod, and describe current situation of them for display applications. In addition to the overview, we introduce a polarized emission sheet consists of electrospun nanofibers embedded with quantum rods.View full abstractDownload PDF (8709K) -
Yoshio KOBAYASHIArticle type: Article
Session ID: IDY2015-16
Published: March 06, 2015
Released on J-STAGE: September 22, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThis lecture introduces studies on fabrication of nanocapsules, i.e. core-shell particles with techniques based on a liquid phase process and their several properties, as follow. Nanocapsules composed of shells such as silica (SiO_2), titania (TiO_2) and polystyrene (PSt) have been produced previously. For coating with silica shell, Au, Ag, Co, AgI, CoPt, PtRu, Gd compound (GdC), fluorescence polystyrene microspheres and quantum dot (QD) were used as cores. SiO_2/GdC nanocapsules were also coated with SiO_2. For Au and Ag nanoparticles, optical spectra of the coated particles agreed with predictions by Mie theory. For metallic Co nanoparticles, crystallization of the Co was promoted with annealing in air with no oxidation of the Co, and the crystallized particles exerted magnetic properties. CoPt/SiO_2 nanocapsules also showed magnetic properties. PtRu/SiO_2 nanocapsules had catalytic activity stable for a long period. For Au, AgI, GdC and SiO_2/GdC, the silica-coated particle colloid solutions functioned as X-ray contrast agents. For GdC and SiO_2/GdC, the colloid solutions also functioned as MRI contrast agents. The fluorescence polystyrene microspheres/SiO_2 nanocapsules showed more stable fluorescence to laser-irradiation than uncoated microspheres. The QD/SiO_2 nanocapsule colloid solution could be used as a fluorescence marker for imaging tissues in a mouse. For coating with TiO_2 shell, SiO_2, PSt and SiO_2/PSt were used as cores. SiO_2/TiO_2 nanocapsules were used for fabrication of colloidal crystals. With the use of PSt/TiO_2 nanocapsules as precursor, hollow TiO_2 spheres could be fabricated by removing PSt core from the nanocapsules with annealing in air. Jingle bell-shaped hollow spheres were fabricated with removal of PSt from the multilayered nanocapsules composed of SiO_2 core, PSt inner shell, and TiO_2 outer shell by immersing them in tetrahydrofuran. For coating with PSt shell, Au/SiO_2 nanocapsules were used as cores, so that multilayered nanocapsules composed of Au core, silica inner shell and PS outer shell were successfully produced. This successful performance proved that it was possible to bond inorganic materials and organic materials.View full abstractDownload PDF (857K) -
Kazuhiko SHIMOMURAArticle type: Article
Session ID: IDY2015-17
Published: March 06, 2015
Released on J-STAGE: September 22, 2017
CONFERENCE PROCEEDINGS FREE ACCESSEmission wavelength control of InAs QDs using MOVPE have been studied. Emission wavelength in each arrayed waveguides was controlled by selective area growth of MOVPE using SiO2 mask. Heights of QDs were controlled by using double-capping method, and emission wavelength was controlled by changing the composition of GaInAs buffer layer beneath the QDs. By using these methods, broadband InAs QDs LED, more than 600nm bandwidth, and flat-top spectrum have been obtained.View full abstractDownload PDF (4127K) -
Masayuki NAKAMOTO, Jonghyun MOONArticle type: Article
Session ID: IDY2015-18
Published: March 06, 2015
Released on J-STAGE: September 22, 2017
CONFERENCE PROCEEDINGS FREE ACCESSHighly uniform quantum dot (QD) light emitting diodes (LEDs) have been developed by using Transfer Mold fabrication method to realize highly efficient and bright display devices having the good color purity. The brightness of Transfer Mold QD LEDs was as high as 633 times, compare with that of flat substrate QD LEDs. The carrier injection efficiency of Transfer Mold QD LEDs might be improved due to the uniform arrangement without QD particle aggregation. Transfer Mold method is useful for the highly efficient and good color purity QD LEDs to a great extent.View full abstractDownload PDF (3424K) -
Article type: Appendix
Pages App1-
Published: March 06, 2015
Released on J-STAGE: September 22, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (80K) -
Article type: Appendix
Pages App2-
Published: March 06, 2015
Released on J-STAGE: September 22, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (80K) -
Article type: Appendix
Pages App3-
Published: March 06, 2015
Released on J-STAGE: September 22, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (80K)
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