Compact Raman generators
AssigneeRaytheon Company
InventorsDavid A. Rockwell, Vladimir V. Shkunov
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Abstract
According to an embodiment of the disclosure, a Raman generator includes a Raman medium and one or more optical elements. The Raman medium is configured to receive a pump pulse at a first wavelength and shift at least a portion of the pump pulse energy or power into a Stokes-shifted pulse at a second wavelength. The one or more optical elements are configured to pass the pump pulse and the Stokes-shifted pulse multiple times through the Raman medium. Each pass of the pulses through the Raman medium follows a path. Each path is parallel or anti-parallel to the other paths.
Claims21
A Raman generator comprising:
- a Raman medium configured to receive a pump pulse at a first wavelength and shift at least a portion of the pump pulse energy or power into a Stokes-shifted pulse at a second wavelength, the Raman medium having a longitudinal central axis;
- and
- one or more optical elements configured to pass the pump pulse and the Stokes-shifted pulse multiple times through the Raman medium;
- wherein each pass of the pulses through the Raman medium follows a path;
- wherein each path is parallel or anti-parallel to the other paths;
- and
- wherein the paths of three or more consecutive passes of the pulses through the Raman medium alternate between opposite sides of the longitudinal central axis of the Raman medium.
A method for a Raman generator, the method comprising:
- passing a pump pulse through a Raman medium having a longitudinal central axis a plurality of times, each pass shifting at least a portion of the pump pulse energy or power into a Stokes-shifted pulse at a second wavelength;
- and
- passing the Stokes-shifted pulse through the Raman medium a plurality of times to increase a power of the Stokes-shifted pulse;
- wherein each pass of the pulses through the Raman medium follows a path;
- wherein each path is one of parallel or anti-parallel to the other paths;
- and
- wherein the paths of three or more consecutive passes of the pulses through the Raman medium alternate between opposite sides of the longitudinal central axis of the Raman medium.
Dependencies are inferred from the claim text.