Figure 5 | Scientific Reports

Figure 5

From: Vortex Laser based on III-V semiconductor metasurface: direct generation of coherent Laguerre-Gauss modes carrying controlled orbital angular momentum

Figure 5

Intensity profiles of obtained LG* modes having helical wavefront: (a1) , (a2) , (a3) and (a4) . Mach-Zehnder Interferogram: (b1 (b2)) One-start spiral fringes corresponding to right (left) handed with OAM charge l = 1(−1). (b3 (b4)) Two-starts spiral fringes corresponding to right (left) handed with OAM charge l = 2(−2).

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