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.
Reference:
Flamm, D, Naidoo, D, Schulze, C, Forbes, A and Duparré, M. 2012. Mode analysis with a spatial light modulator as a correlation filter. Optics Letters, vol. 37(13), pp 2478-2480
Flamm, D., Naidoo, D., Schulze, C., Forbes, A., & Duparré, M. (2012). Mode analysis with a spatial light modulator as a correlation filter. http://hdl.handle.net/10204/6114
Flamm, D, Darryl Naidoo, C Schulze, A Forbes, and M Duparré "Mode analysis with a spatial light modulator as a correlation filter." (2012) http://hdl.handle.net/10204/6114
Flamm D, Naidoo D, Schulze C, Forbes A, Duparré M. Mode analysis with a spatial light modulator as a correlation filter. 2012; http://hdl.handle.net/10204/6114.
Copyright: 2012 OSA. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-37-13-2478. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
