[15a-PA2-1~18] 3.8 Optical measurement, instrumentation, and sensor

▲ [15a-PA2-16] Non-Mechanical Scanning AMCW Laser Rangefinder Using Wavelength-Swept Dispersion-Tuned Fiber Laser

〇(D)Zheyuan Zhang¹, Chao Zhang¹, Takuma Shirahata¹, Shinji Yamashita¹, Sze Y. Set¹ (1.Tokyo Univ. RCAST)

Keywords:AMCW LiDAR, Dispersion-Tuned Fiber Laser, Non-mechanical beam steering

We for the first time proposed a non-mechanical AMCW rangefinder using dispersion-tuned wavelength-swept laser source. Continuous high-speed scanning of 10 kHz and centimeter-level depth resolution had been achieved with a single-pixel detector. Dispersion-tuned laser provides a wavelength-swept Quasi-CW laser source that is inherent amplitude-modulated with a known frequency, which saves the trouble of external intensity modulation. At the same time, the wavelength-adjustability enables dispersion-tuned laser to realize non-mechanical beam steering with diffractive element.