Organic Solid State Lasers

M. Bcrggren, A. Dodabalapur, R. E. Slusher, Organic solid-state lasers with imprinted gratings on plastic substrates, Appl. Phys. Leu. 1998, 72, 410. 

All these waveguiding films lack one important feature that would be necessary for true lasing They do not have a resonator for optical feedback that would lock the optical modes traveling in the gain direction. The thin-film waveguide confines the optical modes in one direction (in the vertical), but in the other two dimensions the modes have translational and rotational symmetry. The incorporation of resonator structures into the thin films in order to get true organic solid-state lasers will be described next. 

A. Dodabalapur, E.A. Chandros, M. Berggren, R.E. Slusher, Organic solid state lasers Past and future, Science 277 (1997) 1787-1788. 

FIGURE 2.11. Molecular structures of organic solid-state laser materials. 

One possibility to realize low-threshold organic solid-state lasers is to utilize guest-host systems. In the following this is demonstrated for the example of DCM- and DCM2-doped organic semiconductors. As host materials the electron-transport material Alq3 and the hole-conducting materials NPD and CBP are used. 

Fig. 12.12 Photograph of a Coumarin 6 solution excited by the organic laser (a) and photoluminescence of the marker dyes Coumarin 152, Coumarin 6 and Rhodamine 6G measured with utilization of an organic solid-state laser as excitation source (b).

G. Kranzelbinder, G. Leising, Organic Solid-State Lasers, Rep. Prog. Phys. 63... 

Dodabalapur A, Chandross EA, Berggren M, Slusher RE (1997) Applied physics organic solid-state lasers past and future. Science 277 1787... 

Shi LT, Jin F, Zheng ML, Dong XZ, Chen WQ, Zhao ZS, Duan XM (2011) Threshold optimization of polymeric opal photonic crystal cavity as organic solid-state dye-doped laser. App Phys Lett 98 093304... 

Dodabalapur A, Chandross E A, Berggren M and Slusher R E, Organic solid-state lasers past and future . Science, 1997, Til, 1787-8. 

J. H. Schon et al., An Organic Solid State Injection Laser, 289,599... 

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