Title :
Telecom-wavelength compatible THz n-i-pn-i-p superlattice photomixers for spectroscopical applications
Author :
Preu, Sascha ; Malzer, Stefan ; Döhler, Gottfried H. ; Wang, Lijun ; Lu, Hong ; Gossard, Arthur C.
Author_Institution :
Max-Planck Inst. for the Sci. of Light, Erlangen, Germany
fDate :
Nov. 3 2009-Oct. 6 2009
Abstract :
We report on the progress of room-temperature operating, continuous-wave, tunable n-i-pn-i-p superlattice THz photomixers, compatible with 1.55 ¿m telecom laser systems. An output power of 0.2 ¿W at 1 THz has been achieved at a photocurrent of 9.4 mA, using a broadband antenna. The spectral power is at a level where high resolution spectroscopy becomes attractive. This is demonstrated by measuring the absorption spectrum of water vapor between 0.4 and 1.6 THz.
Keywords :
broadband antennas; microwave mixers; microwave photonics; photoconductivity; photoemission; semiconductor superlattices; terahertz spectroscopy; water; H2O; absorption spectra; broadband antenna; continuous-wave tunable n-i-pn-i-p superlattice THz photomixers; current 9.4 mA; frequency 0.4 THz to 1.6 THz; high resolution spectroscopy; photocurrent; telecom laser systems; temperature 293 K to 298 K; water vapor; Absorption; Broadband antennas; Frequency; Laser tuning; Photoconductivity; Power lasers; Spectroscopy; Superlattices; Telecommunications; Tunable circuits and devices;
Conference_Titel :
Terahertz and Mid Infrared Radiation: Basic Research and Practical Applications, 2009. TERA-MIR 2009. International Workshop
Conference_Location :
Turunc-Marmaris
Print_ISBN :
978-1-4244-3848-8
Electronic_ISBN :
98-1-4244-3849-5
DOI :
10.1109/TERAMIR.2009.5379619
