[17a-418-1~10] 3.8 Optical measurement, instrumentation, and sensor

[17a-418-3] Measurement limit of multiple-reflection optical interferometry

〇Kuniharu Takizawa^1,2, Hiroshi Tanaka¹, Hiroto Sakai¹, Tsubasa Watanabe¹, Lianhua Jin² (1.Hamamatsu Photonics, 2.Yamanashi Univ.)

Keywords:Fabry-Perot interferometry, quantum detection limit, electro-optic effect

Multiple-reflection interferometry (MRI) like mirrorless Fabry-Pérot interference possesses many advantages such as high sensitivity, simple optical system and ease of measurement. The first observation of electro-optically induced phase of 30 nano-radian was achieved by applying ac voltage of 5 mV to a Y-cut LiTaO3 crystal with a half-wavelength of 367 kV. It was confirmed experimentally and theoretically that quantum detection limit can be achieved using the MRI.