[6a-PA3-1~23] 3.9 Terahertz technologies

[6a-PA3-17] Development of frequency shift terahertz wave source using a frequency shifted feedback laser

〇Takahiro Kurihara¹, Nanbu Koki¹, Koji Suizu¹, Tomofumi Ikari² (1.Chiba Inst. Tech., 2.Spectra Design)

Keywords:terahertz, frequency shifted feedback laser, optical frequency domain reflectometry

In late years, Time Of Flight is a major method in the distance measurement using terahertz (THz) wave. However, this method has problem that an experimental setup becomes large and it is difficult to measure the distance when the distance is unclear. In this study, we develop a frequency shift THz wave with a frequency shifted feedback laser (FSF laser) in order to improve these demerit and intended to realize the detection using a schottky barrier diode (SBD). And we propose a novel measurement method using beat signal generated by a frequency shift THz wave. We confirmed frequency shift THz wave generation using a uni traveling carrier photodiode (UTC-PD) by mixing FSF laser and external cavity laser diode (ECLD) outputs and succeed the frequency shift THz wave detection using a SBD.