THz Detector
Overview
Sunpump offers THz pyroelectric detector series (THZ10 / THZ20 / THZ30) optimized for the THz region: compact size, large active area and fast response. Configured as THz power meters and energy meters for THz laser power measurement, THz spectroscopy and imaging.
Description
1. Overview
These pyroelectric detectors are optimized for application in the THz region: small, large active area and short response time. The THz detection system consists of a detector and a current pre-amplifier (CPA), optimized for cw lasers with a chopper. For very short pulses the detector can be used with a voltage amplifier (VPA) as an energy meter in the µJ and mJ range.
2. Key Specifications
· Active area diameter: 10 / 20 / 30 mm
· Thermal time constant: 50 ms
· Max. power density: 15 mW/cm²
· Typical current sensitivity: 0.5–0.6 µA/W
· Working range: 8 µW – 100 mW
· Energy sensitivity: >500 / >200 / >20 V/J
· Calibration: PTB Berlin at 1.4 THz
3. Typical Applications
THz laser power and energy measurement; cw THz lasers with optical chopper; pulsed THz energy detection; THz spectroscopy; THz imaging; laser laboratory metrology.
Specifications
| Diameter of active area | 10 / 20 / 30 mm |
| Thermal time constant | 50 ms |
| Max. power density | 15 mW/cm² |
| Typical current sensitivity | 0.5–0.6 µA/W |
| Rise time | 100 µs (THZ10) / 700 µs (THZ20) / 2000 µs (THZ30) |
| Max. chopper rate | 500 Hz (THZ10) / 200 Hz (THZ20) / 80 Hz (THZ30) |
| Working range | 8 µW–10 mW (THZ10) / 10 µW–10 mW (THZ20) / 20 µW–100 mW (THZ30) |
| Energy sensitivity | >500 V/J (THZ10) / >200 V/J (THZ20) / >20 V/J (THZ30) |
| Min. detectable energy | 0.5 µJ (THZ10) / 1 µJ (THZ20) / 2 µJ (THZ30) |
| Calibration | PTB Berlin 1.4 THz |