Gentec-EO THZ-D Series Terahertz Power Detector (THZ9D-20mS-BL-D0)
| Brand | Gentec-EO |
|---|---|
| Origin | Canada |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | THZ9D-20mS-BL-D0 |
| THz Source Type | Pulsed |
| Spectral Range | 0.1–30 THz |
Overview
The Gentec-EO THZ-D Series is a family of calibrated, room-temperature-operated thermopile-based terahertz power detectors engineered for precision measurement of pulsed and quasi-continuous THz radiation across the 0.1–30 THz band. Unlike cryogenic bolometers or gas-phase Golay cells, the THZ-D series leverages a robust, vacuum-sealed thermoelectric sensor architecture with integrated thermal compensation—enabling stable, drift-free operation without liquid nitrogen or active cooling. Each detector is factory-calibrated at 10.6 µm (28.3 THz), with traceable NIST-traceable calibration data provided for wavelengths from 10.6 µm to 440 µm (corresponding to 28.3 THz to 0.68 THz), supporting both absolute power measurement within the calibrated band and high-reproducibility relative measurements across the full 0.1–30 THz spectrum. The THZ9D-20mS-BL-D0 variant features a 9 mm Ø active aperture, black-coated absorber optimized for broadband THz coupling, and an integrated 20 ms response time circuit for compatibility with low-frequency chopper modulation (e.g., 10 Hz SDC-500).
Key Features
- Room-temperature operation: Eliminates dependency on cryogens or complex thermal management systems—reducing total cost of ownership and operational complexity compared to cooled bolometric alternatives.
- Broadband spectral response: Validated absolute calibration at 10.6 µm (28.3 THz), with extended relative measurement capability from 0.1 THz to 30 THz via wavelength-dependent correction factors supplied in digital calibration files.
- High dynamic range: THZ9D supports measurements from 5 µW to 25 mW; THZ12D extends to 3 W—enabling use across low-power spectroscopy setups and high-flux THz generation platforms (e.g., optical rectification in ZnTe or DAST).
- Standard interface compatibility: Outputs analog voltage (±10 V) proportional to incident power; fully interoperable with Gentec-EO’s MAESTRO and M-LINK meter platforms, as well as third-party DAQ systems via standard BNC or SMA connectors.
- Optimized thermal design: Hermetically sealed thermopile element with low thermal mass and high absorption efficiency (>95% across 0.1–30 THz), minimizing saturation effects and enabling linear response over four decades of power.
Sample Compatibility & Compliance
The THZ-D series is compatible with free-space THz beams generated by femtosecond-laser-pumped photoconductive antennas, optical rectification crystals (e.g., GaP, ZnTe, LiNbO₃), and backward-wave oscillators (BWOs). Its flat spectral responsivity profile ensures minimal bias in time-domain spectroscopy (TDS) and Fourier-transform infrared (FTIR) applications. All units comply with IEC 61000-4 electromagnetic immunity standards and are CE-marked. Calibration certificates include uncertainty budgets per ISO/IEC 17025:2017 requirements, with traceability to NRC Canada (National Research Council Canada) standards. For GLP/GMP environments, optional audit-ready calibration reports with 21 CFR Part 11–compliant electronic signatures are available upon request.
Software & Data Management
Detectors integrate seamlessly with Gentec-EO’s proprietary LaserSoft™ software suite (v5.2+), supporting real-time power logging, spectral correction application, multi-channel synchronization, and export to CSV, HDF5, or MATLAB-compatible formats. Raw analog output allows direct acquisition using LabVIEW, Python (PyVISA), or MATLAB Instrument Control Toolbox. All calibration data—including wavelength-dependent responsivity curves, temperature coefficients, and linearity corrections—is embedded in device EEPROM and auto-loaded by compatible meters. Firmware updates and configuration parameters are managed via USB-C or RS-232 interfaces, ensuring long-term maintainability and field-upgradability.
Applications
- Time-domain terahertz spectroscopy (THz-TDS) source characterization and beam profiling
- Calibration transfer standards for THz metrology labs accredited under ISO/IEC 17025
- Process monitoring of THz-driven material curing and polymer crosslinking
- Non-destructive evaluation (NDE) of composite laminates, pharmaceutical tablet coatings, and semiconductor wafers
- Validation of THz parametric amplifiers and quantum cascade laser (QCL) output stability
- Academic research in ultrafast photonics, condensed matter physics, and molecular rotational spectroscopy
FAQ
Is the THZ9D-20mS-BL-D0 suitable for continuous-wave (CW) THz sources?
Yes—it is validated for both pulsed and CW operation, though optimal signal-to-noise ratio is achieved when used with mechanical chopper modulation (e.g., SDC-500 at 10 Hz) to suppress low-frequency thermal drift.
Does it require a dedicated readout instrument?
No—its analog output is compatible with any voltmeter or DAQ system with ±10 V input range and ≥16-bit resolution; however, Gentec-EO meters provide automatic application of spectral correction and real-time power calculation.
Can I perform absolute measurements outside the 10.6 µm–440 µm calibration range?
Absolute accuracy is not guaranteed beyond this range; however, relative measurements (e.g., power stability tracking, beam alignment optimization) remain highly reproducible up to 30 THz using supplied correction factors.
What is the maximum average power the THZ9D can withstand without damage?
The detector is rated for continuous exposure up to 25 mW; exceeding this may cause permanent degradation of the absorber coating or thermopile junction.
Is firmware or calibration data updateable in the field?
Yes—calibration files and firmware are user-loadable via USB-C using LaserSoft™ or command-line utilities; no return-to-factory service is required for recalibration updates.
