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US 6,636,545 B2Granted
Supersonic and subsonic laser with radio frequency excitation
OwnerAlexander V. Krasnovinventor
Life of this patent
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Abstract
Disclosed is a gas laser utilizing radio frequency excitation in the area of sonic or supersonic/subsonic transfer gas flow. The laser uses various types of gases and mixtures of gases as the active medium using radio frequency excitation. The gas is supplied into a supersonic nozzle for acceleration of the active gaseous flow to supersonic or deceleration to high subsonic speeds in order to provide intensive dynamic cooling of the active gas medium. The gas is excited using radio frequency excitation in the critical area of the supersonic nozzle or downstream therefrom. The radio frequency action and excitation can also occur within the optical resonator region which is located within the supersonic area of the nozzle.
Claims46
A radio frequency excited laser comprising:
- a gas medium entering in a gas inlet and passing longitudinally through a supersonic metal nozzle within a laser body and an optical resonator within said nozzle downstream of said gas inlet;
- said RF electrode on a first side of said laser body outside said nozzle, an opposing side of said laser body electrically connected to a grounding source, and a dielectric plate insulating an RF electrode, said body dielectrically insulated from said gas medium, said RF electrode exciting said gas active medium by intensive ionization of said gas between said RF electrode and said opposing side of said laser body.
A radio frequency excited laser comprising:
- a metal laser body retaining a gas medium within a gas flow path, said gas medium entering in a gas inlet and passing longitudinally through a supersonic nozzle and an optical resonator within said gas flow path;
- a first RF electrode within said nozzle and a dielectric plate insulating said RF electrode;
- a dielectric coating opposite said dielectric plate separating Bald laser body from said gas flow path, said metal laser body adjacent said dielectric coating and opposing said RF electrode electrically grounded, said RF electrode exciting said gas active medium by intensive ionization of said gas between said RF electrode and said opposing dielectric plate;
- at least one turbine in flow communication with said gas flow path.
1 more element
A radio frequency excited laser comprising:
- a laser body retaining a gas medium within a gas flow path, said gas medium entering in a gas inlet and passing longitudinally through a supersonic nozzle, an optical resonator within said gas flow path, said nozzle having a subsonic area, critical area and supersonic area;
- an RF electrode outside said nozzle;
- a dielectric plate insulating said RF electrode;
- a dielectric coating opposite said gas flow path from said dielectric plate separating said laser body from said gas flow path;
- wherein said laser body adjacent said dielectric coating and opposing said RF electrode is electrically grounded, said RF electrode exciting said gas active medium by intensive ionization of said gas between said RF electrode and said opposing dielectric plate;
- at least one turbine in flow communication with said gas flow path;
- a chemical catalyst in said gas flow path;
- a heat exchanger downstream of said chemical catalyst and within said gas flow path.
5 more elements
A radio frequency excited laser comprising:
- a laser body retaining a gas medium within a gas flow path, said gas medium entering in a gas inlet and passing longitudinally through a supersonic nozzle, an optical resonator within said gas flow path, said nozzle having a subsonic area, critical area and supersonic area;
- at least one RF electrode operably connected to an RF resonator, said RF resonator in electrical connection with an RF power supply;
- a dielectric plate insulating said RF electrode;
- a dielectric coating opposite said gas flow path from said dielectric plate separating said laser body from said gas flow path;
- wherein said laser body adjacent said dielectric coating is electrically grounded, said RF electrode exciting said gas active medium by intensive ionization of said gas between said RF electrode and said opposing dielectric plate;
- at least one turbine in flow communication with said gas flow path;
- a chemical catalyst in said gas flow path and downstream of said optical resonator;
- a heat exchanger downstream of said chemical catalyst and within said gas flow path;
- an RF matching device operably connected to said at least one RF electrode and said RF power supply.
6 more elements
A radio frequency excited laser comprising:
- a laser body retaining a gas medium within a gas flow path, said gas medium entering in a gas inlet and passing longitudinally through a supersonic nozzle and an optical resonator within said gas flow path;
- an RF electrode on a first side of said laser body operably connected to an RF resonator, said RF resonator electrically connected to an RF power supply, said laser body electrically connected to a grounding device opposite said RF electrode, a ceramic dielectric plate insulating said RF electrode, said RF electrode exciting said gas active medium by intensive ionization of said gas between said RF electrode and said opposing side of said laser body;
- a dielectric coating opposite said gas flow path from said dielectric plate separating said laser body from said gas flow path;
- at least one turbine in flow communication wit said gas flow pat.
1 more element
Dependencies are inferred from the claim text.