Differential frequency generation
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsChristian Keyser, Micah Raab
Life of this patent
Estimating the term…
Abstract
A fluid filled fiber for a quasi-phase matched generator and a laser incorporating such a fluid filled fiber. The laser has a liquid filled fiber with charge transfer molecules dissolved in a solvent. The liquid of the liquid filled fiber comprises or consists essentially of highly polar liquids and/or charge transfer molecules having relatively high molecular dipole values.
Claims18
A liquid filled quasi-phase matched optical parametric amplification fiber laser comprising:
- a light source in optical communication with a light transmitting fiber having a cladding and a liquid filled core therein, the liquid being a polar liquid adapted for OPA wherein the liquid further comprises Zwitterionic molecules,
- the fiber having a Λ/D value ranging from 2.3 to 666.7.
A difference frequency generator comprising:
- a light source in communication with a hollow core fiber,
- the hollow fiber being filled with at least two mixed liquids not having mutually overlapping Raman lines, one said liquid with Λ from 100 μm to 1000 μm, and σ from 0.1 μm to 10 μm, and a gas with Λ from 1000 μm to 10000 μm, and σ 1 from 1.0 μm to 10 μm;
- two spaced apart electrodes configured to enable second order wave mixing the liquid or gas inside the hollow fiber, and having an electrode period of 0.1-10.0% of Λ.
A method of making a liquid filled quasi-phase matched optical parametric amplification fiber laser comprising the steps of:
- selecting a nonlinear liquid charge transfer molecule having a uB ranging from 2 to E-48 esu to 2 E-40 esu;
- selecting a transmissive solvent;
- combining the nonlinerar liquid charge transfer molecule and the NIR transmissive solvent to yield a liquid having a dielectric constant of 1.5 to 7.5 to thereby provide a QPM OPA/G gain/SRS gain ratio greater than 1;
- and
- disposing the liquid in a light transmitting fiber in optical communication with a light source.
Dependencies are inferred from the claim text.