Generation and detection of coherent terahertz waves using two photomixers
| Autor: | K. A. McIntosh, W. F. DiNatale, Simon Verghese, E.K. Duerr, K. A. Molvar, S.D. Calawa |
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| Rok vydání: | 1998 |
| Předmět: |
Physics
Physics and Astronomy (miscellaneous) business.industry Terahertz radiation Physics::Optics Photodetector Astrophysics::Cosmology and Extragalactic Astrophysics Laser law.invention Optics Sampling (signal processing) Transmission line law Frequency domain Optoelectronics business Astrophysics::Galaxy Astrophysics Microwave Diode |
| Zdroj: | Applied Physics Letters. 73:3824-3826 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.122906 |
| Popis: | A general technique has been demonstrated at microwave and submillimeter-wave frequencies for photoconductive sampling in the frequency domain using photomixers and continuous-wave laser diodes. A microwave version in which two photomixers were coupled by a transmission line was developed to quantitatively test the concept from 0.05 to 26.5 GHz. A quasioptical version using antenna-coupled photomixers was demonstrated from 25 GHz to 2 THz. Such a system can outperform systems based on time-domain photoconductive sampling in frequency resolution, spectral brightness, system size, and cost. |
| Databáze: | OpenAIRE |
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