Picture of two heads

Open Access research that challenges the mind...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

Coherent beam superposition of ten diode lasers with a Dammann grating

Paboeuf, David and Emaury, Florian and de Rossi, Sébastien and Mercier, Raymond and Lucas-Leclin, Gaëlle and Georges, Patrick (2010) Coherent beam superposition of ten diode lasers with a Dammann grating. Optics Letters, 35 (10). pp. 1515-1517. ISSN 0146-9592

[img]
Preview
PDF
2010_Pab_uf_et_al._Optics_Letters.pdf - Final Published Version

Download (233kB) | Preview

Abstract

We demonstrate the use of a binary diffractive optical element in a very simple setup to convert the multilobed beam from a low fill factor array of coherent laser diodes into a quasi-Gaussian beam. The phase profile of the grating is determined with a phase retrieval algorithm. Experimentally, the conversion efficiency reaches more than 44%. We also establish that this setup can be used to make an effective measurement of the coherency of the laser array.