Title :
Single-mode random laser in weakly scattering dendrimer waveguides
Author :
Otomo, A. ; Yokoyama, S. ; Otomo, S. ; Nakahama, T. ; Mashiko, S.
Author_Institution :
Commun. Res. Lab, Kansai Adv. Res. Center, Kobe, Japan
Abstract :
Summary form only given. We have investigated lasing properties of a dye cored dendrimer in poly methylmethacrylate (PMMA) waveguides and we observed single-narrow-line laser emission without resonator mirrors. The narrow-line arises from multiple scattering by dendrimers in the PMMA waveguide. Introducing such weak scattering in the waveguide gain media is in contrast to the previous studies on lasing in strong scattering media. We have further studied relations between lasing and scattering properties in the dendrimer doped waveguide.
Keywords :
dye lasers; dyes; laser beams; laser modes; optical materials; optical polymers; optical pumping; solid lasers; stimulated emission; superradiance; waveguide lasers; PMMA waveguide; PMMA waveguides; dendrimer doped waveguide; dendrimers; dye cored dendrimer; lasing; lasing properties; multiple scattering; poly methylmethacrylate; scattering properties; single-mode random laser; single-narrow-line laser emission; strong scattering media; waveguide gain media; weak scattering; weakly scattering dendrimer waveguides; Aggregates; Biomedical optical imaging; Laser modes; Optical bistability; Optical films; Optical pumping; Optical scattering; Optical waveguides; Polymer films; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on
Conference_Location :
Nice
Print_ISBN :
0-7803-6319-1
DOI :
10.1109/CLEOE.2000.910365
