Wavelength-selective laser beam splitter
US6661577B1 · kind B1 · utility
7Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2002 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Sep 17, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/1006
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A beam splitting device for laser field is useful to spatially separate a laser beam created in the process of frequency doubling or three-wave mixing, into sub-beams according to wavelength and polarization state. The device has an optical retarder for wavelength-selective polarization rotation of the laser light, followed by a Wollaston prism and optionally a dual wedge prism to create parallel spatially separated sub-beams. Alternatively, two Wollaston prisms can be arranged to create two parallel spatially separated beams after the polarization rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.