Compact raman generator with synchronized pulses
AssigneeRaytheon Company
InventorsDavid A. Rockwell, Vladimir V. Shkunov
Life of this patent
Estimating the term…
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 synchronize one or more subsequent passages of the Stokes-shifted pulse through the Raman medium with one or more subsequent pump pulses at the first wavelength. The synchronized passage of the Stokes-shifted pulse and one or more subsequent pump pulses through the Raman medium increases a power of the Stoke-shifted pulse.
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's energy or power into a Stokes-shifted pulse at a second wavelength;
- and
- one or more optical elements configured to synchronize one or more subsequent passages of the Stokes-shifted pulse through the Raman medium with one or more subsequent pump pulses at the first wavelength to thereby increase a power of the Stokes-shifted pulse;
- wherein the Raman medium has a length that avoids achieving a Raman threshold for stimulated Raman scattering during a single pass through the Raman medium.
A method comprising:
- passing a pump pulse at a first wavelength through a Raman medium to shift at least a portion of the pump pulse's energy or power into a Stokes-shifted pulse at a second wavelength;
- and
- synchronizing one or more subsequent passages of the Stokes-shifted pulse through the Raman medium with one or more subsequent pump pulses at the first wavelength to thereby increase a power of the Stokes-shifted pulse;
- wherein the Raman medium has a length that avoids achieving a Raman threshold for stimulated Raman scattering during a single pass through the Raman medium.
A system comprising:
- a laser configured to generate a pump pulse at a first wavelength and one or more subsequent pump pulses at the first wavelength;
- and
- a Raman generator comprising:
- a Raman medium configured to shift at least a portion of the pump pulse's energy or power into a Stokes-shifted pulse at a second wavelength;
- and
- one or more optical elements configured to synchronize one or more subsequent passages of the Stokes-shifted pulse through the Raman medium with the one or more subsequent pump pulses to thereby increase a power of the Stokes-shifted pulse;
- wherein the Raman medium has a length that avoids achieving a Raman threshold for stimulated Raman scattering during a single pass through the Raman medium.
Dependencies are inferred from the claim text.