Method and device for multi photon excitation of a sample
US7115885B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 2003 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Feb 29, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a method for multi photon excitation of a sample a laser beam is split into at least two coherent partial beams each having a beam axis and a same intensity distribution about its beam axis. The partial beams are directed from different directions towards a common measuring plane running transversely to the beam axes at an inclination angle <1 between the beam axes of the partial beams; and the partial beams are projected onto the measuring plane by means of a common lens system. Thus, an interference pattern formed by the coherent partial beams within the measuring plane provides areas of maximum light intensity adjacent to areas of minimum light intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.