Patent ID: 9377667
Filing Date: 2016-06-28
CPC Classification: G02F,H01S

Claim Text:
1. A third harmonic generator comprising: a first beam combiner configured to combine a first fundamental optical beam with a second harmonic optical beam; a third harmonic crystal coupled to the first beam combiner, configured to generate a third harmonic optical beam from the first fundamental optical beam and the second harmonic optical beam, wherein upon generation of the third harmonic optical beam, a residual fundamental optical beam exits the third harmonic crystal; a first beam splitter coupled to the third harmonic crystal, configured to separate the residual fundamental optical beam and the third harmonic optical beam; and a second harmonic crystal coupled to the first beam splitter, configured to generate the second harmonic optical beam from the residual fundamental optical beam, and for coupling the second harmonic optical beam to the first beam combiner.