Gentec-EO THZ-D - Manual (Page 21)

21
Revision 1.1
THZ-D Series Instruction Manual
Gentec Electro-Optics Inc. All rights reserved
THE NEW CALIBRATION METHOD
1. Gentec-EO calibrates its THZ12D-3S- VP detector using a stable 10.6 μm laser and a NIST Gold
Standard Power Detector.
2. A validation of the detector is made to ensure its good working condition and that its behaviour
conforms to the specifications at this wavelength and to other detectors of this type according to
the reference absorption curve.
3. Traceable Sensitivity for the THZ12D-3S-VP detectors at ±15% is calculated using the reference
absorption curve, as determined by traceable power measurements validation process
mentioned in this document. It is then programmed in the EEPROM of the detector for each
wavelength bet
ween 10 μm to 600 μm (30 THz to 0.50 THz). Beyond 600 μm (0.50 THz) the
spectral absorption is estimated.
4. Typical Sensitivity for the THZ9D-20mS-BL and similar Pyroelectric THz detectors is calculated
using the typical absorption BL curve. It is then programmed in the EEPROM of the detector for
each wavelength between 10 μm to 440 μm (30 THz to 0.70 THz). Beyond 440 μm (0.70 THz),
the spectral absorption is estimated. Traceable Sensitivity is determined at 10.6 μm with NIST
Gold standard.
FUTURE DEVELOPMENTS
Gentec-EO is working with major organizations defining international standards. As soon as one of these
organizations will offer a broadband standard in the THz region, we will integrate it into our calibration
method and be able to guarantee a calibration uncertainty with traceability.
Gentec-EO THz detectors are being calibrated by recognized international standards laboratory in order
to provide a Gold THz standard for calibration services.
We will continue to update you on the state of the art of calibration of our THz Detectors and Instruments
as new developments occur.