Hartmann-Shack wave front measurements for real time determination of laser beam propagation parameters
- Laser-Laboratorium Goettingen, Hans-Adolf-Krebs-Weg 1, 37077 Goettingen (Germany)
The suitability of the Hartmann-Shack technique for the determination of the propagation parameters of a laser beam is faced against the well known caustic approach according to the ISO 11146 standard. A He-Ne laser (543 nm) was chosen as test beam, both in its fundamental mode as well as after intentional distortion, introducing a moderate amount of spherical aberration. Results are given for the most important beam parameters M{sup 2}, divergence, and beam widths, indicating an agreement of better than 10% and for adapted beam diameter <5%. Furthermore, the theoretical background, pros and cons, as well as some features of the software implementation for the Hartmann-Shack sensor are briefly reviewed.
- OSTI ID:
- 20779362
- Journal Information:
- Review of Scientific Instruments, Vol. 77, Issue 5; Other Information: DOI: 10.1063/1.2198795; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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