Optical element, optical device, and method for producing optical element
AssigneeInter-University Research Institute Corporation National Institutes of Natural Sciences
InventorTakunori TAIRA
Life of this patent
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Abstract
An optical element according to an embodiment includes a first optical member which is made of a single crystal, ceramic, or glass and to which a luminescent center excited by control light is added. A first diffraction grating that reflects light having a predetermined wavelength in a non-irradiation state where the first optical member is not irradiated with the control light or in an irradiation state where the first optical member is irradiated with the control light is formed in the first optical member, and the first diffraction grating is a volume holographic diffraction grating or a volume Bragg diffraction grating.
Claims23
An optical element comprising:
- a first optical member made of a single crystal, ceramics, or glass, wherein
- a first diffraction grating configured to reflect light having a predetermined wavelength is formed in the first optical member, and
- the first diffraction grating is a volume holographic diffraction grating or a volume Bragg diffraction grating formed by a plurality of modified regions in which a part of the first optical member is modified.
An optical system comprising:
- a plurality of optical members made of a crystal, ceramics, or glass, wherein
- the plurality of optical members are disposed along one direction,
- a first diffraction grating configured to reflect light having a predetermined wavelength is formed in a first optical member among the plurality of optical members, and
- the first diffraction grating is a volume holographic diffraction grating or a volume Bragg diffraction grating formed by a plurality of modified regions in which a part of the first optical member is modified.
An optical system including a solid-state laser base material and a resonator, and configured to output a laser beam, the system comprising:
- an optical member disposed within the resonator, and made of a crystal, ceramics, or glass, wherein
- a luminescent center excited by control light is added to the optical member, and a diffraction grating configured to reflect the laser beam in a direction different from an optical axis of the resonator in a non-irradiation state where the optical member is not irradiated with the control light or an irradiation state where the optical member is irradiated with the control light is formed in the optical member, and
- the diffraction grating is a volume holographic diffraction grating or a volume Bragg diffraction grating formed by a plurality of modified regions in which a part of the optical member is modified.
A method for producing an optical element comprising:
- a step of forming a volume holographic diffraction grating or a volume Bragg diffraction grating configured to reflect light having a predetermined wavelength in an optical member made of a single crystal, ceramics, or glass, wherein
- the volume holographic diffraction grating or the volume Bragg diffraction grating is formed by modifying the optical member by using a pulsed laser beam.
Dependencies are inferred from the claim text.