| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10408580 | Optics and Lasers in Engineering | 2005 | 9 Pages |
Abstract
A phase-stepping lateral shearing Sagnac interferometer for wavefront measurement is described. Phase shifting is implemented using a polarisation modulator operating on the wavelength independent Pancharatnam's phase allowing accurate measurement of phase maps even with broadband light. We demonstrate the interferometer by measuring a range of different wavefront shapes using both laser and white light.
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Authors
Yat Hei Lo, A.R.D. Somervell, T.H. Barnes,