Ring laser cavities
This patent describes a ring laser. It comprises: a cavity; a source laser emitting a wide diverging pattern of polarized radiation into the cavity of the ring laser. The source laser being a device that is effective to emit a wide pattern of polarized radiation with a wide-lobed far field distribution, routing means located in the cavity near the source laser for routing an angular portion of the wide pattern of polarized radiation in a predetermined direction; a Faraday rotator for rotating polarization direction of radiation; the Faraday rotator being located in the cavity of the ring laser; a half-wave plate for rotating polarization direction of radiation; the half-wave plate being located in the cavity of the ring laser; the routing means and the Faraday rotator and the half-wave plate being located in an optical ring path in the cavity so that radiation can propagate around the path and pass from the routing means to and through the Faraday rotator and to and through the half-wave plate.
- Assignee:
- Secretary of the Navy, Washington, DC
- Patent Number(s):
- US 4905252; A
- Application Number:
- PPN: US 7-245176A
- OSTI ID:
- 6813139
- Resource Relation:
- Patent File Date: 16 Sep 1988
- Country of Publication:
- United States
- Language:
- English
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