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Scanning terahertz heterodyne imaging systems
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Dengler, Robert Siegel, Peter |
| Copyright Year | 2007 |
| Description | Scanning terahertz heterodyne imaging systems are now at an early stage of development. In a basic scanning terahertz heterodyne imaging system, (see Figure 1) two far-infrared lasers generate beams denoted the local-oscillator (LO) and signal that differ in frequency by an amount, denoted the intermediate frequency (IF), chosen to suit the application. The LO beam is sent directly to a mixer as one of two inputs. The signal beam is focused to a spot on or in the specimen. After transmission through or reflection from the specimen, the beams are focused to a spot on a terahertz mixer, which extracts the IF outputs. The specimen is mounted on a translation stage, by means of which the focal spot is scanned across the specimen to build up an image. |
| File Size | 292716 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20090041653 |
| Archival Resource Key | ark:/13960/t6062j237 |
| Language | English |
| Publisher Date | 2007-05-01 |
| Access Restriction | Open |
| Subject Keyword | Imaging Techniques Infrared Lasers Ultrahigh Frequencies Laser Applications Oscillators Heterodyning Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
