In high power laser systems, beam transport and manipulation are as critical as gain and amplification. This tutorial introduces participants to the use of Fourier optics as a tool in laser design for preserving beam quality and enabling precise control over the spatial profile.
We will explore how image relays are used to maintain high-quality beam profiles at key locations and suppress diffraction-induced distortions. The role of spatial filtering in beam shaping will be discussed, as well as how dark field techniques can be employed for in-situ monitoring of optical components for contamination or damage.
The session begins with a concise presentation covering the principles of Fourier optics, spatial filtering, and their relevance in high energy laser systems. This is followed by a hands-on laboratory where participants will construct an image relay system, shape a beam using a combination of serrated aperture and pinhole spatial filter, and implement a dark field setup for visualizing optical imperfections.
This tutorial is ideal for participants interested in the practical optics underlying advanced laser design and diagnostics.
