Method and apparatus for spatially resolved polarimetry
US7289223B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2004 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Jul 23, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J4/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and an apparatus for the spatially resolved polarimetric examination of an imaging beam pencil (1) generated by an associated pulsed radiation source (9). A first and a second photoelastic modulator (6a, 6b) and a polarization element (5) are introduced serially into the beam path of the beam pencil. A control unit (8) activates a first modulation oscillation of the first photoelastic modulator and a second modulation oscillation of the second photoelastic modulator and drives the radiation source for outputting a respective radiation pulse in a manner dependent on the oscillation state of the first photoelastic modulator and/or the second photoelastic modulator. A detector (4) detects the beam pencil coming from the polarization element in a spatially resolved manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.