High precision frequency measurement of terahertz waves using optical combs from a Mach–Zehnder-modulator-based flat comb generator
I Morohashi, I Katayama, M Kirigaya, Y Irimajiri… - Optics letters, 2019 - opg.optica.org
I Morohashi, I Katayama, M Kirigaya, Y Irimajiri, N Sekine, I Hosako
Optics letters, 2019•opg.optica.orgUsing a frequency-tunable optical comb generated from a Mach–Zehnder-modulator-based
flat comb generator (MZ-FCG) and a nonlinear optical fiber, we demonstrated a frequency
measurement of continuous terahertz wave sources with the frequency of 0.1 and 0.6 THz by
an electro-optic sampling method. We clearly observed beat signals between the terahertz
source and the optical two-tone extracted from the optical comb, allowing us to determine
the absolute frequency. Owing to the wide comb spacing of the MZ-FCG, this method has a …
flat comb generator (MZ-FCG) and a nonlinear optical fiber, we demonstrated a frequency
measurement of continuous terahertz wave sources with the frequency of 0.1 and 0.6 THz by
an electro-optic sampling method. We clearly observed beat signals between the terahertz
source and the optical two-tone extracted from the optical comb, allowing us to determine
the absolute frequency. Owing to the wide comb spacing of the MZ-FCG, this method has a …
Using a frequency-tunable optical comb generated from a Mach–Zehnder-modulator-based flat comb generator (MZ-FCG) and a nonlinear optical fiber, we demonstrated a frequency measurement of continuous terahertz wave sources with the frequency of 0.1 and 0.6 THz by an electro-optic sampling method. We clearly observed beat signals between the terahertz source and the optical two-tone extracted from the optical comb, allowing us to determine the absolute frequency. Owing to the wide comb spacing of the MZ-FCG, this method has a high potential for the high-speed measurement of the frequency of terahertz wave sources.
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