When an active medium is placed in a resonance cavity, laser emission
can occur. Suprisingly, laser emission can occur in systems where
there is no obvious external cavity, the term ``random lasing'' is often
applied to these various systems. We studied films of a Pi-conjugated
polymer which showed narrow, <0.5nm, emission lines. Photon counting
established the lines were coherent, and therefore laser emission.
Coherent backscattereing showed the mean scattering length was
approximately 10 emission wavelengths. The average Fourier transform
of many individual locations revealed a universal resonator length in
the films.