Patent ID: 7929583

Claim:
A coherent light apparatus comprising: a coherent light source configured to produce a first coherent light at a first frequency; a frequency converter optically coupled to the coherent light source, the frequency converter configured to convert the first coherent light to a second coherent light at a second frequency, the frequency converter comprising an asymmetric frequency converter (AFC) configured to nonlinearly convert the first coherent light to the second coherent light, wherein the frequency conversion is more efficient in a first direction than in a second direction, and a resonant cavity formed about the AFC, the resonant cavity configured to circulate the first coherent light and to transmit the second coherent light propagating along the first direction out of the resonant cavity; and a coupling optic optically coupled between the coherent light source and the frequency converter, the coupling optic configured to match a first mode of the first coherent light to a second mode of the resonant cavity.