Patent ID: 8306075

Claim:
A display system comprising: a coherent light apparatus configured to produce a first coherent light at a first frequency by frequency conversion of a second coherent light at a second frequency, the frequency conversion being more efficient in a first direction than in a second direction and the frequency conversion occurring in a resonant cavity; an image input providing image data; a display configured to produce images based on the image data by modulating the first coherent light produced by the coherent light apparatus; and a controller coupled to the display and to the image input, the controller configured to control the operation of the display based on the image data wherein the coherent light apparatus comprises: a coherent light source configured to produce the second coherent light at the second frequency; a frequency converter optically coupled to the coherent light source, the frequency converter configured to convert the second coherent light to the first coherent light, the frequency converter comprising an asymmetric frequency converter (AFC) configured to nonlinearly convert the second coherent light to the first coherent light, wherein the frequency conversion is more efficient in the first direction than in the second direction, and a resonant cavity formed around the AFC, the resonant cavity configured to transmit the first coherent light and to circulate the second coherent light; and a coupling optic optically coupled between the coherent light source and the optical frequency converter, the coupling optic configured to match a first mode of the coherent light produced by the coherent light source to a second mode of the resonant cavity.