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US 12,119,609 B2Granted
High intensity pulse laser generation system and method
AssigneeBlue Laser Fusion, Inc.
InventorsShuji Nakamura, Hiroaki Ohta
Life of this patent
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Abstract
In an example, the present invention provides a high intensity pulse laser generation system. The system has a variety of elements. The system has an optical cavity maintained in a vacuum, e.g., 300 Torr and less. In an example, the optical cavity is configured to increase an intensity of a laser beam comprising a pulse from a first energy power intensity to a second higher energy power intensity propagating on a first optical path configured within the optical cavity by circulating or reciprocating at least a portion of the laser beam.
Claims20
A high intensity pulse laser generation system, the system comprising:
- an optical cavity, the optical cavity being configured to increase an intensity of a laser beam comprising a pulse from a first energy power intensity to a second higher energy power intensity propagating on a first optical path configured within the optical cavity by circulating or reciprocating at least a portion of the laser beam from a light source having a pulse energy power of 0.01 Joule to 1 Mega Joule on the first optical path;
- an optical path modification device coupled to the optical cavity, the optical path modification device configured to repeatedly change a spatial direction of the laser beam propagating on the first optical path at a predetermined timing to cause the laser beam propagating on the first optical path to change a direction from the first optical path to a second optical path that is outside of the first optical path thereby the optical path modification device is configured to propagate the laser beam on the second optical path generating a high intensity pulse laser beam;
- at least a pair of mirror devices, each of the mirror devices having a mirror surface area of 1 cm2 and 10000 cm2, and configured with the optical path modification device and provided within the first optical path, at least one the mirror devices configured to change a spatial position of the mirror device being coupled to the laser beam;
- a timing device configured with the optical path modification device and having a predetermined frequency to adjust the spatial position of the mirror device, the timing device being configured to adjust the spatial position of the mirror device after a predetermined number of cycles associated with the circulating or reciprocating of the laser beam propagating between at least the pair of mirrors such that each cycle of the laser beam progressively increases an intensity from the first energy power intensity to the second energy power intensity to an Nth energy power intensity, where N is an integer greater than 2, to the high intensity pulse laser beam on the second optical path;
- an spatial driver device coupled to the timing device and the one mirror device, the spatial driver device being configured to adjust the spatial position of the mirror device by changing a thickness of a volume structure by an expansion or contraction process to move the spatial position of the mirror device from a first position to a second position after the predetermined number of cycles.
2 more elements
A high intensity pulse laser generation system, the system comprising:
- an optical cavity maintained in a vacuum, the optical cavity being configured to increase an intensity of a laser beam comprising a pulse from a first energy power intensity to a second higher energy power intensity propagating on a first optical path configured within the optical cavity by circulating or reciprocating at least a portion of the laser beam from a light source on the first optical path;
- an optical path modification device coupled to the optical cavity, the optical path modification device configured to repeatedly change a spatial direction of the laser beam propagating on the first optical path at a predetermined timing ranging from 20 milliseconds to 3 seconds with the response time from 0.01 microsecond to 30 microseconds to cause the laser beam propagating on the first optical path to change a direction from the first optical path to a second optical path that is outside of the first optical path thereby the optical path modification device is configured to propagate the laser beam on the second optical path generating a high intensity pulse laser beam;
- at least a pair of mirror devices, each of the mirror devices having a mirror surface area of 1 cm2 and 10000 cm2, and configured with the optical path modification device and provided within the first optical path, at least one the mirror devices configured to change a spatial position of the mirror device being coupled to the laser beam;
- a timing device configured with the optical path modification device and having a predetermined frequency to adjust the spatial position of the mirror device, the timing device being configured to adjust the spatial position of the mirror device after a predetermined number of cycles associated with the circulating or reciprocating of the laser beam propagating between at least the pair of mirrors such that each cycle of the laser beam progressively increases an intensity from the first energy power intensity to the second energy power intensity to an Nth energy power intensity, where N is an integer greater than 2, to the high intensity pulse laser beam on the second optical path;
- and
- a driver device coupled to the timing device and the one mirror device, the driver device being configured to adjust the spatial position of the mirror device to move the spatial position of the mirror device from a first position to a second position after the predetermined number of cycles.
3 more elements
A method of high intensity pulse laser generation system, the system comprising:
- in an optical cavity configured to increase an intensity of a laser beam comprising a pulse from a first energy power intensity to a second higher energy power intensity propagating on a first optical path configured within the optical cavity by circulating or reciprocating at least a portion of the laser beam from a light source having a output power of 0.01 Joule to 1 Mega Joule on the first optical path coupled to an optical path modification device coupled to the optical cavity, the optical path modification device configured to repeatedly change a spatial direction of the laser beam propagating on the first optical path at a predetermined timing to cause the laser beam propagating on the first optical path to change a direction from the first optical path to a second optical path that is outside of the first optical path thereby the optical path modification device is configured to propagate the laser beam on the second optical path generating a high intensity pulse laser beam and at least a pair of mirror devices configured with the optical path modification device and provided within the first optical path, at least one the mirror devices configured to change a spatial position of the mirror device being coupled to the laser beam;
- adjusting the spatial position of the mirror device using a timing device after a predetermined number of cycles associated with the circulating or reciprocating of the laser beam propagating between at least the pair of mirrors such that each cycle of the laser beam progressively increases an intensity from the first energy power intensity to the second energy power intensity to an Nth energy power intensity, where Nis an integer greater than 2, to the high intensity pulse laser beam on the second optical path.
Dependencies are inferred from the claim text.