| Zugriffsnummer | 34870 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Absolute terahertz power measurement of a time-domain spectroscopy system |
| Autor(in); Institution |
Globisch, Björn; Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute (HHI), Berlin, GERMANY
Dietz, Roman J. B.; Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute (HHI), Berlin, GERMANY
Göbel, Thorsten; Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute (HHI), Berlin, GERMANY
Schell, Martin; Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute (HHI), Berlin, GERMANY
Bohmeyer, Werner; Sensor und Lasertechnik (SLT), Neuenhagen, GERMANY
Müller, Ralf; 7.3, Detektorradiometrie und Strahlungsthermometrie, PTB-Berlin
Steiger, Andreas; 7.3, Detektorradiometrie und Strahlungsthermometrie, PTB-Berlin
|
| Quelle/Jahr | Optics Letters: 40 (2015), 15, 3544 - 3547 |
| ISSN | 0146-9592 (PRINT) ; 1539-4794 (ONLINE) |
| DOI | |
| Verlag | Washington, DC: OSA |
| Zusammenfassung | We report on, to the best of our knowledge, the first absolute terahertz (THz) power measurement of a photoconductive emitter developed for time-domain spectroscopy (TDS). The broadband THz radiation emitted by a photoconductor optimized for the excitation with 1550-nm femtosecond pulses was measured by an ultrathin pyroelectric thin-film (UPTF) detector.We show that this detector has a spectrally flat transmission between 100 GHz and 5 THz due to Special conductive electrodes on both sides of the UPTF. Its flat responsivity allows the calibration with a standard detector that is traceable to the International System of Units (SI) at the THz detector calibration facility of PTB. Absolute THz power in the range from below 1 μW to above 0.1 mW was measured. |
