G Basile et al 1991 Metrologia 28 455 doi:10.1088/0026-1394/28/6/003
Phase Modulation in High-resolution Optical Interferometry
G Basile, A Bergamin, G Cavagnero and G Mana
Show affiliationsThe measurement of nanometre displacements with picometre resolution has been made possible by a phase-modulation recovery scheme applied to an optical Michelson interferometer using polarization encoding. In contrast to conventional schemes, phase modulation is carried out before the interferometer optics. In this way, the low-frequency components of the phase shift between the two interfering beams are locked at zero (within limits set only by shot noise) before beam splitting by a feedback loop driving the modulator. An interferometer prototype, illuminated by a beam thus modulated, was constructed and coupled to an X-ray interferometer to compare the optical and X-ray interferometric measurement values of sub-nanometre displacements. A resolution better than 1 pm over a 100 Hz bandwidth was obtained.
- PACS
- Subjects
- Dates
-
Issue 6 (1991)
-
Phase Modulation in High-resolution Optical Interferometry
G Basile et al 1991 Metrologia 28 455
-
Formal Maurer-Cartan structures: from CFT to Classical Field Equations
Anton M. Zeitlin JHEP12(2007)098
-
Whitening of non-stationary noise from gravitational wave detectors
Elena Cuoco et al 2004 Class. Quantum Grav. 21 S801
-
Pressure distribution in a multianvil high-pressure device
H Mazaki et al 1973 J. Phys. E: Sci. Instrum. 6 1072
-
The atomic units, the kilogram and the other proposed changes to the SI
B W Petley 2007 Metrologia 44 69
-
Cloud physics
J Latham 1969 Rep. Prog. Phys. 32 69
-
Embedding of 211 particles in NEG-123 superconductors
M Muralidhar et al 1999 Supercond. Sci. Technol. 12 555
-
Relativistic static thin discs with radial stress support
Guillermo A González and Patricio S Letelier 1999 Class. Quantum Grav. 16 479
-
Four dimensional
4 superinvariants through gauge completion
Filipe Moura JHEP08(2002)038
-
Non-commutative field theory approach to two-dimensional vortex liquid system
Kyungsun Moon et al 2004 J. Phys. A: Math. Gen. 37 L39
Users also read
What's this?- International Comparison of Iodine Cells
- Intercomparison of Northern European 127I2 - Stabilized He-Ne Lasers at λ = 633 nm
- Nanometrology at the PTB
Related review articles
What's this?- Photometry, radiometry and 'the candela': evolution in the classical and quantum world
- Imaging with LINC-NIRVANA, the Fizeau interferometer of the Large Binocular Telescope: state of the art and open problems
- Polymer optical fiber sensors—a review