Optical: systems and elements – Optical frequency converter – Parametric oscillator
Patent
1998-09-11
2000-08-08
Lee, John D.
Optical: systems and elements
Optical frequency converter
Parametric oscillator
G02F 139
Patent
active
061010235
ABSTRACT:
The present invention relates generally to the field of optical devices and particularly to embodiments of a three-stage PPLN optical parametric oscillator/difference-frequency generator configuration. The present invention allows simultaneous generation of three wavelengths in efficient use of the pump signal. The structure of the first embodiment of the present invention comprises a first PPLN element having first and second grating regions, and a second PPLN element having its own grating period. An input coupler is positioned at the input and exit ends of a resonator cavity and the first PPLN element is positioned between the input coupler and the second PPLN element. A second embodiment of the present invention includes a single PPLN element having three separate grating regions. The single PPLN element is positioned between input and output coupler mirrors. A third embodiment of the present invention includes a single PPLN element having three grating regions. The input and output couplers are affixed directly to the input and exit facets of the PPLN element.
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Griffith Gerald P.
Meyer, Jr. Ronald K.
Mui Peter H.
Pekny William
Vaidyanathan Mohan
Anderson Terry J.
Hoch, Jr. Kalr J.
Lee John D.
Northrop Grumman Corporation
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