Coherent light generators – Particular beam control device – Nonlinear device
Patent
1986-10-30
1988-03-15
Scott, Jr., Leon
Coherent light generators
Particular beam control device
Nonlinear device
372 21, 372 71, 372 66, H01S 310
Patent
active
047317876
ABSTRACT:
A monolithic phasematched harmonic generator is obtained by optically pumping an optically nonlinear lasant member having reflective faces defining the monolithic optical resonator. Phasematching is achieved, in one case, by inclining a totally internally reflective face of the resonator at a proper angle relative to other faces of the resonator to angularly separate and resonate lasant waves of the proper polarization. In a second case, a clad fiber resonator of optically nonlinear lasant material has its cladding arranged to guide and thus resonate only lasant waves of the correct polarization. In a third case, the optical nonlinear coefficient of the optically nonlinear lasant material is spatially modulated with a period equal to an odd integer number of coherence lengths, of the harmonic generation process, to obtain quasi-phasematched operation. Phasematched operation improves the efficiency of the harmonic generation process.
REFERENCES:
patent: 4181899 (1980-01-01), Liu
patent: 4617666 (1986-10-01), Liu
patent: 4618957 (1986-10-01), Liu
patent: 4637026 (1987-01-01), Liu
patent: 4653056 (1987-03-01), Baer et al.
patent: 4656635 (1987-04-01), Baer et al.
Byer Robert L.
Fan Tso Y.
Aine Harry E.
Board of Trustees, Stanford University
Jr. Leon Scott
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