Loading...
Please wait, while we are loading the content...
Similar Documents
Modulated source interferometry with combined amplitude and frequency modulation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1998 |
| Description | An improved interferometer is produced by modifying a conventional interferometer to include amplitude and/or frequency modulation of a coherent light source at radio or higher frequencies. The phase of the modulation signal can be detected in an interfering beam from an interferometer and can be used to determine the actual optical phase of the beam. As such, this improvement can be adapted to virtually any two-beam interferometer, including: Michelson, Mach-Zehnder, and Sagnac interferometers. The use of an amplitude modulated coherent tight source results in an interferometer that combines the wide range advantages of coherent interferometry with the precise distance measurement advantages of white light interferometry. |
| File Size | 980189 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19980202939 |
| Archival Resource Key | ark:/13960/t7sn54b5v |
| Language | English |
| Publisher Date | 1998-01-06 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Patents Frequency Modulation Radio Frequencies Phase Modulation Light Beams Amplitude Modulation Interferometers Coherent Light Interferometry Light Sources Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
