Mode analysis with a spatial light modulator as a correlation filter
- 19 June 2012
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 37 (13) , 2478-2480
Abstract
A procedure for the real-time analysis of laser modes using a phase-only spatial light modulator is outlined. The procedure involves encoding into digital holograms by complex amplitude modulation a set of orthonormal basis functions into which the initial field is decomposed. This approach allows any function to be encoded and refreshed in real time (60 Hz). We implement a decomposition of guided modes propagating in optical fibers and show that we can successfully reconstruct the observed field with very high fidelity.Keywords
This publication has 14 references indexed in Scilit:
- Fast M2measurement for fiber beams based on modal analysisApplied Optics, 2012
- Quantitative measurement of the orbital angular momentum density of lightApplied Optics, 2012
- High-speed modal decomposition of mode instabilities in high-power fiber lasersOptics Letters, 2011
- Poynting vector and orbital angular momentum density of superpositions of Bessel beamsOptics Express, 2011
- Real-time determination of laser beam quality by modal decompositionOptics Express, 2011
- Complete modal decomposition for optical fibers using CGH-based correlation filtersOptics Express, 2009
- Spatially and spectrally resolved imaging of modal content in large-mode-area fibersOptics Express, 2008
- Novel approach for polarization-sensitive measurements of transverse modes in few-mode optical fibersApplied Physics B, 2008
- Complete Modal Decomposition for Optical WaveguidesPhysical Review Letters, 2005
- Phase-Only Complex-Valued Spatial Filter*Journal of the Optical Society of America, 1971