Simple approach for spectral beam combination of narrowband laser sources for spectroscopic applications

• DOI: 10.1364/oe.495505
• Publication Date: 2023-08-17T16:00:18Z
• Authors: Harald Moser; Johannes P. Waclawek; Walter Pölz; Bernhard Lendl
• Keywords: Narrowband; Spatial filter

Spectral beam combination of multiple single mode laser sources employing narrowband spectral filters which are arranged on the perimeter regular polygons is demonstrated. With this simple geometric design, co-alignment and co-propagation individual beams can be reasonably achieved. Spectroscopic applicability displayed by spatial filtering, mode-matching, subsequent coupling combined into a 76 m astigmatic mirror multipass cell.