Structuring a laser beam subject to optical Kerr effect for improving its focusing properties

The Advantages and Disadvantages of Using Structured High-Order but Single Laguerre–Gauss LGp0 Laser Beams

“…LG 10 φ 0 =4π On-axis intensity (a.u.) z (mm) In order to clarify expectations on optical power limiters (OPLs) [34][35][36][37][38][39][40][41][42][43][44][45][46][47], the optical limiting device in its simplest form intended to protect some optronic systems is described in Figure 6. The basic elements of the limiting device are a nonlinear Kerr medium of thickness d characterised by a nonlinear refractive index n 2 , a linear lens of focal length f L , and a diaphragm of radius R D set at a distance L from the ensemble (Kerr medium + lens).…”