Accession Number : ADA330073

Title :   An Organic Thin Film Laser Diode: A New and Novel Light Source.

Descriptive Note : Final technical rept. 1 Dec 93-31 May 97

Corporate Author : ARIZONA UNIV TUCSON OPTICAL SCIENCES CENTER

Personal Author(s) : Peyghambarian, N. ; Mazumdar, S. ; Armstrong, N. ; Kippelen, B.

PDF Url : ADA330073

Report Date : SEP 1997

Pagination or Media Count : 6

Abstract : This ONR program was focusing on the development of an entirely new diode laser, based upon electroluminescent organic thin films. During these three years, important milestones have been reached towards the demonstration of the first organic laser diode: (i) demonstration of electroluminescence from an organic channel waveguide device fabricated on glass and on Si. (ii) optical gain in excess of 10(4)cm1 measured in a pure solid state conjugated polymer. (iii) fabrication of feedback structures with 0.2 mu resolution. With the synthesis of new compounds and their characterization (determination of HOMO and LUMO levels), the performance of organic light emitting devices could be continuously improved. Current devices exhibit external quantum efficiencies as high as 3 % with a stable aluminum cathode. Output light levels in excess of 45,000 cd/m2 (500,000 cd/m2 in pulsed regime) are measured at this stage and are getting close to the levels required to achieve gain in electrically injected structures. Finally our research efforts have led to the recent demonstration of optically pumped integrated organic laser diodes using several configurations. Simultaneously, we have developed a complete theory of optical absorption in PPV and determined the origin of photo- induced absorption in this material and other pi-conjugated polymers.

Descriptors :   *THIN FILMS, *LIGHT SOURCES, *DIODE LASERS, EMISSION, OPTICAL PROPERTIES, OPTICS, STABILITY, DEMONSTRATIONS, ELECTROLUMINESCENCE, LIGHT, FABRICATION, WAVEGUIDES, CATHODES, PULSES, RADIATION ABSORPTION, ALUMINUM, FEEDBACK, ORGANIC MATERIALS, GAIN, LEVEL(QUANTITY), QUANTUM EFFICIENCY, FOCUSING, EXTERNAL, ABSORPTION, CHANNELS.

Subject Categories : Polymer Chemistry
      Lasers and Masers
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE