CALIBRATING IN THE THz REGION

A CHALLENGE: APPLICATION NOTE ON THZ DETECTOR CALIBRATION

Quebec QC, Canada — Now for the first time, Gentec-EO has developed a rigorous calibration method and new thermal Terrahertz (THz) detector that allow absolute power and energy measurement based on a validated reference curve from 10 ?m to 440 ?m (30 THz to 0.70 THz).

The purpose of this application note is to explain the new method of calibration and validation for Gentec-EO THz detectors and to characterize its new spectrally flat
THz Thermal Probe.

Typical traceable detector calibration methods involve the calibration at one particular wavelength with traceable Gold Standard previously obtained from a recognized international institution such as NIST in USA and PTB in Germany (most typical wavelength are 1.064 or 10.6 ?m).

In addition, the relative spectral absorption of the sensor is determined, using a Near IR (0.25 to 2.5 ?m) spectrometer and a traceable spectral standard.

A wavelength correction factor is then applied to provide the best possible calibration uncertainty over the detector???s calibrated spectral range.

Gentec-EO has intensified its THz development program in recent months, which has led to a technical breakthrough. We have discovered a spectrally flat and very high absorption material for the THz range, from 10 ?m to 440 ?m (and up to 600 ?m) that will be used as the THz absorber for their new thermal probe.

Read the rest online at: https://www.gentec-eo.com/products/thz-detectors

About Gentec Electro-Optics Inc.

In 2000, Gentec Electro-Optics Inc.was born from Gentec Inc. so it could dedicate all its efforts to the development of laser beam measurement devices. More recently, in 2010, the company came up with its MAESTRO, the first touch screen monitor of the market. During the same year, the acquisition of Spectrum Detector Inc. allowed the company to add, among others, measurement solutions to the new and rapidly expanding THz market, ultra-sensitive optical joulemeters (down to femtojoules), and pulse to pulse energy measurement devices for lasers with repetition rates up to 200 kHz.

Gentec Electro Optics, Inc.
445 St-Jean-Baptiste, Suite 160
Quebec, QC, Canada
G2E 5N7

T: 418.651.8003 1888 5GENTEC
F: 418.651.1174
E: info@gentec-eo.com
W: www.gentec-eo.com

Gentec-EO USA, Inc. – for WEST COAST
5825 Jean Road
97035
Lake Oswego, OR
UNITED STATES

Tel : (503) 697-1870
Fax : (503) 697-0633
Email: ddooley@gentec-eo.com
Website: www.gentec-eo.com