  Is it possible to form an image using light produced by stimulated emission?
Here we study light scatter off an assembly of excited chromophores. Due to the
Optical Theorem, stimulated emission is necessarily accompanied by excited
state Rayleigh scattering. Both processes can be used to form images, though
they have different dependencies on scattering direction, wavelength and
chromophore configuration. Our results suggest several new approaches to
optical imaging using fluorophore excited states.
