Godbout Martin, Deschênes Jean-Daniel, Genest Jérôme
Centre d'optique, photonique et laser, Université Laval, Québec, G1K 7P4, Canada.
Opt Express. 2010 Jul 19;18(15):15981-9. doi: 10.1364/OE.18.015981.
The multiheterodyne beatnote between two frequency combs having pulses sliding one with respect to another is used to perform spectrally resolved ranging of diffuse reflectors at short distances. The sliding comb sources are generated using one mode-locked laser and a two-beam interferometer, but two properly controlled lasers could be used as well. A pseudo-random binary modulation of the pulses is used to increase the non-ambiguous range. Ranging with a spatial resolution of 21 cm and a spectral resolution of 10 cm(-1) over a 200 cm(-1) spectral range is demonstrated.
两个频率梳之间的多外差拍频，其中脉冲相互滑动，用于在短距离内对漫反射器进行光谱分辨测距。滑动梳状源是使用一个锁模激光器和一个双光束干涉仪产生的，但也可以使用两个适当控制的激光器。脉冲的伪随机二进制调制用于增加无模糊范围。展示了在200 cm⁻¹光谱范围内具有21 cm的空间分辨率和10 cm⁻¹的光谱分辨率的测距。
