Cw-terahertz spectrum of air with water vapor lines, recorded with a GaAs
photomixer-emitter and a Schottky receiver.
Schottky Receivers
Versatile equipment for terahertz sensing
- Zero-bias Schottky diodes
- Output signal proportional to incident terahertz power
- Ideally suited for terahertz imaging
- Compatible with emitters of TeraScan 780 and TeraScan 1550
Schottky diodes work as incoherent receivers (i.e., power detectors) of terahertz radiation. The output signal is phase-insensitive and does not depend on the terahertz path length or sample thickness. Terahertz imaging thus benefits from both speed and sensitivity of the Schottky receivers. A special high-bandwidth version lends itself for the study of ultrafast processes – owing to its capability of resolving the amplitudes of individual terahertz pulses, even at typical repetition rates of femtosecond fiber lasers!
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Specification
Specifications Schottky-FD-RX-1
"High Responsivity"Concept Zero-bias Schottky diode Antenna type Log-spiral Terahertz bandwidth 50 - 1500 GHz Noise-equivalent power 7 pW/sqrt(Hz) @ 100 GHz
100 pW/sqrt(Hz) @ 1 THzResponsivity (typ.) 22000 V/W @ 100 GHz,
1100 V/W @ 1 THzAmplifier bandwidth 10 Hz - 1 MHz - Additional Information
- Applications
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Literature
- Article: M. Yahyapour et al., A flexible, phase-insensitive system for broadband cw-terahertz spectroscopy and imaging; IEEE Transact. Terahertz Science Technol. 6:5 (2016) 670-673.
- Scientific Paper: F. Rettich et al., Field intensity detection of individual terahertz pulses at 80 MHz repetition rate; J Infrared Milli. Terahz. Waves (2015)
- Scientific Paper: S.Brinkmann et al., Towards Quality Control in Pharmaceutical Packaging: Screening Folded Boxes for Package Inserts, J Infrared Milli. Terahz. Waves (2017)
- Review paper: Naftaly, M., et al., Industrial applications of terahertz sensing: State of play, Sensors (2019)
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Related Products
- TeraScan: Complete cw-terahertz spectroscopy platform
- Optomechanics for transmission and reflection measurements
