The power meter has been calibrated with reference to the AIST national power standard for infrared waves of 10.6um. The measurement range of this standard has been extended to the terahertz region by calculating the difference in heat generated when terahertz waves vs. infrared waves are absorbed. The amount of heat absorbed by a calorimeter varies depending on the type of electromagnetic wave absorber used and the wavelength of the input waves, potentially creating measurement uncertainty.
The meter utilises an absorber with a steady absorption ratio, and relies on abundant absorption data for each specific wavelength accumulated by Advantest during the company’s terahertz analysis system R&D activities, improving measurement stability and accuracy.
The meter boasts a portable, compact form factor – 115mm W x 67mm D x 79mm H – and weighs just 900 grams. It connects to the user’s PC via USB port for ease of usability. Frequency range is 0.3 to 10THz and the measurement range is 100mW to 20uW. Response time is 30 seconds or less and the power ,eter’s operating temperature ranges from +10 degrees C to +30 degress C.