Laser resonator, and method of designing laser resonator
AssigneeThe University of Electro-Communications
InventorsMasayuki Katsuragawa, Chiaki Ooae
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Abstract
A laser resonator includes a pair of optical elements forming a first optical path having a focused beam waist, one or more mirrors forming a second optical path of approximately parallel light connected to the first optical path, and a laser medium arranged in the second optical path. Induced emission light generated from the laser medium reciprocates or circles in a path formed by the first optical path and the second optical path. A distance between the pair of optical elements is adjustable, and a beam diameter at the second optical path is adjusted by adjusting the distance between the pair of optical elements.
Claims17
A laser resonator comprising:
- a pair of optical elements forming a first optical path having a focused beam waist;
- one or more mirrors forming a second optical path of approximately parallel light connected to the first optical path;
- and
- a laser medium arranged in the second optical path,
- wherein induced emission light generated from the laser medium reciprocates or circles in a path formed by the first optical path and the second optical path, and
- wherein a distance between the pair of optical elements is adjustable, and a beam diameter at the second optical path is adjusted by adjusting the distance between the pair of optical elements.
A laser resonator comprising:
- a pair of optical elements forming a first optical path having a focused beam waist;
- one or more mirrors forming a second optical path of approximately parallel light connected to the first optical path;
- and
- a laser medium arranged in the second optical path,
- wherein induced emission light generated from the laser medium reciprocates or circles in a path formed by the first optical path and the second optical path, and
- wherein an optical length of the first optical path is ten times or more the Rayleigh length prescribed by a beam diameter at the beam waist, and an optical length of the second optical path is two times or less the Rayleigh length prescribed by a beam diameter at the second optical path.
A method of designing a laser resonator, comprising:
- forming a laser resonator by a pair of optical elements forming a first optical path having a focused beam waist, and one or more mirrors forming a second optical path of approximately parallel light connected to the first optical path;
- arranging a laser medium in the second optical path;
- and
- adjusting a distance between the pair of optical elements to increase a beam diameter at the second optical path to a desired size.
Dependencies are inferred from the claim text.