Abstract
A narrowband terahertz signal generated by a unitravelling carrier
photodiode (UTC-PD) interfaced with a dual-mode Fabry-Pérot laser
diode is demonstrated. A beat tone corresponding to the free spectral
range is generated on the UTC-PD, and radiated by a
transverse-electromagnetic-horn antenna. A terahertz signal at a
frequency of 372 GHz, featuring a linewidth of 17 MHz is recorded by a
subharmonic mixer coupled to an electrical spectrum analyzer. All
components involved in this experiment operate at room temperature. The
linewidth and the frequency of the emitted terahertz wave are analyzed,
along with their dependency on dc-bias conditions applied to laser
diode.
| Original language | English |
|---|---|
| Pages (from-to) | 241106 |
| Journal | Applied Physics Letters |
| Volume | 96 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 1 Jun 2010 |
| Externally published | Yes |
Keywords
- Fabry-Perot interferometers
- horn antennas
- microwave photonics
- photodiodes
- semiconductor lasers
- signal generators
- terahertz wave generation
- Photodiodes
- phototransistors
- photoresistors
- Semiconductor lasers
- laser diodes
- Radiowave and microwave technology