Abstract
We introduce a heterodyne interferometer scheme utilizing the double-pass arrangement of the deflected beams of an acousto-optic modulator. To prove our new idea, the interferometer has been applied for measuring small amplitude vibrations. The output intermediate frequency signal from the interferometer is processed by using an I/Q demodulator. In theory, it can provide the quantum noise limited sensitivity, whereas, in our present Letter, the sensitivity of the phase measurement is limited by the resolution of the A/D converter used for processing the I/Q signals. Details of our interferometer scheme are discussed.
© 2011 Optical Society of America
Full Article | PDF ArticleMore Like This
Che-Chung Chou, Shin-Yu Lu, Tyson Lin, Sheng-Hua Lu, and Ru-Jong Jeng
Opt. Lett. 41(22) 5138-5141 (2016)
Youngkyu Park, Kyoung-Eop Kim, Seong-Jin Kim, June-Gyu Park, Young-Hun Joo, Bu Hyun Shin, Seung-Yop Lee, and Kyuman Cho
Opt. Lett. 36(16) 3112-3114 (2011)
Xiujuan Feng, Ping Yang, Longbiao He, Guangzhen Xing, Min Wang, and Wei Ke
Opt. Express 28(4) 4387-4397 (2020)