Terahertz spectrum analyzer based on frequency and power measurement.
We demonstrate a terahertz (THz) spectrum analyzer based on frequency and power measurement. A power spectrum of a continuous THz wave is measured through optical heterodyne detection using an electromagnetic THz frequency comb and a bolometer and power measurement using a bolometer with a calibrated responsivity. The THz spectrum analyzer has a frequency precision of 1x10(-11), a frequency resolution of 1Hz, a frequency band up to 1.7THz, and an optical noise equivalent power of approximately 1 pW/Hz(1/2).
Yee
Dae-Su
DS
Center for Safety Measurement, Korea Research Institute of Standards and Science, Daejeon 305-340, Korea. dsyee@kriss.re.kr
Jang
Yudong
Y
Kim
Youngchan
Y
Seo
Dae-Cheol
DC