| Zugriffsnummer | 22962 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Simultaneous generation and detection of ultrashort voltage pulses in low-temperature grown GaAs with below-bandgap laser pulses |
| Autor(in); Institution |
Bieler, Mark; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Pierz, Klaus; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Siegner, Uwe; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
|
| Quelle/Jahr | Applied Physics Letters: 94 (2009), 5, 051108-1 - 051108-3 |
| ISSN | 0003-6951 (PRINT) ; 1077-3118 (ONLINE) |
| DOI | |
| Verlag | Melville, NY: American Institute of Physics |
| Zusammenfassung | We present a method that allows for the simultaneous generation and detection of ultrashort voltage pulses, which propagate on a planar transmission line, in the same material with laser pulses of the same wavelength. The generation is accomplished by exciting band-tail states below the fundamental bandgap of a low-temperature grown GaAs layer, while the detection takes advantage of the electro-optic effect in the GaAs material. This simple scheme considerably enhances previous measurement techniques and is capable of generating and measuring frequencies exceeding 1 THz. The optimum wavelength for the combined generation and detection technique is found at ≈ 900 nm. |
