| 1. |
- Berggren, Magnus, 1968-, et al.
(författare)
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Organic laser based on lithographically defined photonic-bandgap resonators
- 1998
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Ingår i: Electronics Letters. - : IEEE. - 0013-5194 .- 1350-911X. ; 34:1, s. 90-91
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Tidskriftsartikel (refereegranskat)abstract
- The authors report the fabrication and characteristics of organic solid-state waveguide lasers with feedback from a photolithographically defined rhomboid photonic bandgap lattice. The lattice is formed by etching holes of depth 10-40 nm in SiO2 and filling them with the organic gain medium. The gain medium is part of a planar waveguide formed by air/organic layer/SiO2.
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| 2. |
- Berggren, Magnus, et al.
(författare)
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Organic solid-state lasers with imprinted gratings on plastic substrates
- 1998
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Ingår i: Applied Physics Letters. - : American Institute of Physics (AIP). - 0003-6951 .- 1077-3118. ; 72:4, s. 410-411
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Tidskriftsartikel (refereegranskat)abstract
- Optically pumped laser emission has been observed from thin films of 8-hydroxyquinolinato aluminum (Alq) doped with a DCM dye deposited on a diffraction,orating formed by imprinting a film of BCB with a mold. The BCB film, which is 4 mu m thick, is deposited on a silicon or a flexible plastic substrate. Laser emission occurs at a wavelength war 655 nm which corresponds to the third order of the grating, which has a periodicity of similar to 0.6 mu m. (C) 1998 American Institute of Physics.
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| 3. |
- Dodabalapur, A, et al.
(författare)
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Resonators and materials for organic lasers based on energy transfer
- 1998
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Ingår i: IEEE Journal of Selected Topics in Quantum Electronics. - : Institute of Electrical and Electronics Engineers (IEEE). - 1077-260X .- 1558-4542. ; 4:1, s. 67-74
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Tidskriftsartikel (refereegranskat)abstract
- Optically pumped lasers have been fabricated with organic/polymeric materials capable of charge transport. The active materials employed are doped films with small molecule hosts and dye, oligomer, and conjugated polymer emitters, In these materials, the excited states created in the host are transferred nonradiatively to the guest molecules which are the emitters, This energy transfer results in very low absorption losses at the emission wavelength and relatively low-threshold powers for the onset of stimulated emission. Such gain media have been successfully included in many types of resonators including whispering-gallery mode, photonic bandgap, and distributed Bragg reflector (DBR) based resonators. A number of novel patterning and fabrication procedures have been developed for organic-based lasers.
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