Calibration of a Shack-Hartmann sensor for absolute measurements of wavefronts
We demonstrate a method with which to calibrate a Shack-Hartmann sensor for absolute wavefront measurement of collimated laser beams. Nearly perfect spherical wavefronts originating from a single-mode fiber were used as references. After the calibration, the uncertainty of the wavefront was less than {lambda}/100 peak to valley across a diameter of 6mm. For example, this method allowed us to balance aberrations and prepare collimated beams with wavefronts that are plane to {lambda}/500 across 1mm.
- OSTI ID:
- 20702659
- Journal Information:
- Applied Optics, Vol. 44, Issue 30; Other Information: DOI: 10.1364/AO.44.006419; (c) 2005 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6935
- Country of Publication:
- United States
- Language:
- English
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