Transformation of a LG₁₀beam into an optical bottle beam

Abstract

We have demonstrated that a simple diaphragm can play the role of a very cheap reconfigurable diffractive optical element allowing the generation of interesting laser beam patterns. For instance, a truncated Laguerre-Gauss LG 10 beam (one peak surrounded by one ring) can be transformed in the focal plane of a lens into an optical bottle beam (OBB) which consists to a dark (or minimal intensity) region surrounded by higher intensity light in the three principal directions. Depending on the beam truncation, one can also observe a flat-top intensity profile.

Generation and propagation characteristics of a localized hollow beam

“…Various approaches to the generation of LHBs have been proposed since the demonstration of this beam was first realized by using the destructive interference between two light beams at the focus [16]. They were generated by the use of nonparaxial light [17][18][19], holograms [16,20], binary phase plates [21][22][23][24], conical refraction [25][26][27][28][29], a uniaxial crystal [30], partially coherent beams [31,32], a spatial light modulator (SLM) [33], surface plasmon polaritons [34,35], and a photon sieve [36], to form a desirable hollow axial structure. In phase modulation methods, the diffractive optical elements, such as the π-phase plate, are constructed by the binary elements or the binary bitmap of the SLM.…”

Structured Laguerre–Gaussian beams for mitigation of spherical aberration in tightly focused regimes

“…the Gaussian LG 00 beam. Nowadays, we are witnessing a new upsurge of investigations on highorder transverse modes in lasers [15][16][17][18][19][20][21][22][23], and specific applications such as particle trapping [24], quantum information [25], optical tweezers [26], and laser beam shaping [27,28]. We can thus legitimately investigate the effects of spherical aberration on the focusing of a high-order transverse mode.…”

Excitation of high-radial-order Laguerre–Gaussian modes in a solid-state laser using a lower-loss digitally controlled amplitude mask

“…The LG p mode can be transformed in the focal plane of a lens into a single-lobed beam by using a binary diffractive optical element playing the role of a rectifier [18]. • A simple diaphragm can transform a LG 1 beam into an optical bottle beam [19] or a flat-top intensity profile [20].…”