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US 9,851,617 B2Granted
Laser device
AssigneeThe University of Electro-Communications
InventorMasayuki Katsuragawa
Life of this patent
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Abstract
A laser device includes a light source that radiates a laser beam having a discrete spectrum; and at least one crystal plate through which the laser beam is transmitted. The at least one crystal plate is an axial crystal plate. The at least one crystal plate is configured to generate an arbitrary polarization distribution of the discrete spectrum by adjusting at least one of the thickness and the angle of the at least one crystal plate.
Claims7
A laser device comprising:
- a light source that radiates a laser beam having a discrete spectrum with at least three different frequencies;
- and
- at least one crystal plate through which the laser beam is transmitted;
- wherein the at least one crystal plate is an axial crystal plate, and
- wherein a thickness of, or both the thickness and an angle of the axial crystal plate is/are adjustable so as to generate a predetermined polarization distribution in the discrete spectrum with a desired polarization state at each of the at least three different frequencies.
2 more elements
A method for controlling an optical process of a laser beam, comprising the steps of:
- outputting from a light source a laser beam having a discrete spectrum with at least three different frequencies,
- guiding the laser beam so as to be incident on an axial crystal plate, and
- adjusting a thickness, or both the thickness and an angle, of the axial crystal plate so as to generate a polarization distribution in the discrete spectrum with a desired polarization state at each of the at least three different frequencies.
Dependencies are inferred from the claim text.