19-picometer mechanical step displacement measurement using heterodyne interferometer with phase-locked loop and piezoelectric driving flexure-stage
Thanh Dong Nguyen, Quang Anh Duong, Masato Higuchi, Thanh Tung Vu, Dong Wei, Masato Aketagawa
Topics & Concepts
Phase-locked loopInterferometryOpticsHeterodyne (poetry)PhysicsNoise floorPhase detectorAcousticsPhase noiseVoltageNoise measurementNoise reductionQuantum mechanicsAdvanced Measurement and Metrology TechniquesAdvanced Fiber Optic SensorsAdvanced MEMS and NEMS Technologies