Schottky Receivers
Versatile equipment for terahertz sensing
• Zero-bias Schottky diodes
• Output signal proportional to incident terahertz power
• Ideally suited for terahertz imaging
• Two versions: High Responsivity / High Bandwidth
• Ultrafast version measures individual terahertz pulses
Schottky diodes work as incoherent receivers (i.e., power detectors) for both pulsed and cw-terahertz radiation. Applications like terahertz imaging benefit 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!
Applications
• Plastic Inspection
• Paint and coating layers
• Paper quality control
• Hydration monitoring
• Communication
• Ultrafast dynamics
• Gas sensing
• Fundamental physics
cw-terahertz spectrum of air with water vapour lines, recorded
with a GaAs photomixer-emitter and a High-Responsivity
Schottky receiver (#EK-000933).
Terahertz pulses at 80 MHz repetition rate, detected with a High-Bandwidth
Schottky receiver (#EK-000961). The figure shows a reference trace in air,
and pulses transmitted through polyamide (PA) and glass fiber composite
(GFC) samples.
Specifications
Specifications #EK-000933
"High Responsivity"#EK-000961
"High Bandwidth"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 THz70 pW/sqrt(Hz) @ 100 GHz
1000 pW/sqrt(Hz) @ 1 THzResponsivity (typ.)
22000 V/W @ 100 GHz,
1100 V/W @ 1 THz230 V/W @ 100 GHz,
17 V/W @ 1 THzAmplifier bandwidth
10 Hz - 1 MHz
10 MHz - 4 GHz
Warranty
1 year