Abstract
The photomixer is a compact solid-state source consisting of two single-frequency tunable diode lasers that generate a THz difference frequency by photoconductive mixing in low-temperature-grown (LTG) GaAs. Two inherent advantages of the photomixer are: it is not limited by the Manley-Rowe relation, as three wave mixers; and it is not affected by idler frequencies, as electronic multipliers. The LTG GaAs photomixer is fabricated on a Si substrate to take advantage of the 3× higher thermal conductivity of Si compared to GaAs. To overcome the RC rolloff, the photomixers are coupled to resonant antennas having high (>100 Ω) driving-point resistance.
| Original language | English |
|---|---|
| Pages (from-to) | 363-365 |
| Number of pages | 3 |
| Journal | Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS |
| Volume | 2 |
| State | Published - 1997 |
| Event | Proceedings of the 1997 10th IEEE Lasers and Electro-Optics Society Annual Meeting, LEOS. Part 2 (of 2) - San Francisco, CA, USA Duration: Nov 10 1997 → Nov 13 1997 |
ASJC Scopus Subject Areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
Keywords
- Dipole antennas
- Low temperature effects
- Optical frequency conversion
- Photoconductivity
- Resonant circuits
- Semiconducting gallium arsenide
- Semiconductor lasers
- Slot antennas
- Terahertz photomixers
- Photomultipliers
Disciplines
- Optics