Super-luminescent (FCLED) "Folded Cavity Light Emitting Diode" comprising a cavity folding waveguide (34) that has at least one total internal reflecting prism (34 A), which provides for a redirection of intra-cavity produced fundamental photonic radiation (40 A) from a longitudinal propagation (40 B)...http://www.google.se/patents/US6819701?utm_source=gb-gplus-sharePatent US6819701 - Super-luminescent folded cavity light emitting diode
