Generation and expansion of Laguerre–Gaussian beams

Yang, Yuhong; Li, Yongliang; Wang, Chi

doi:10.1007/s12596-022-00857-5

Cited by 20 publications

(10 citation statements)

References 153 publications

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Section: Background Generation and Application Of Oam Lightmentioning

confidence: 99%

“…These beams exhibit vortex-like structures (as seen in Figure 2). They have been extensively researched for their fundamental properties, methods of production, measurement, and applications in this reference [31]. OAM has been recognized as potentially useful for a vast and diverse range of applications, such as microparticle manipulation [33,34], trapped particle rotation [35], encoding of information [36], transfer of OAM to atoms [37], and some seen in Figure 3 [38].…”

Section: Background Generation and Application Of Oam Lightmentioning

confidence: 99%

“…This will open new possibilities for fabricating compact and tunable OAM devices for diverse applications. Researchers have extensively delved into the generation and manipulation of OAM beams in free space using spatial-generating devices [39], such as cylindrical lenses [40,41], spiral phase plates [42,43], phase holograms [44,45], and spatial light modulators [46,47], and in optical fibers using fiber-generating [48,49] devices [31] which offer more advantages in terms of characteristics such as miniaturization, lower insertion loss, increased transmission distance, higher efficiency, and a reduction in external interference, which is lacking in the spatial generating method [50]. Converters such as fiber gratings [51], mode-selective couplers [52], photonic crystal fibers [53], and photonic lanterns [54] are attached to specially designed fibers to support OAM mode transmission.…”

Section: Background Generation and Application Of Oam Lightmentioning

confidence: 99%

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Generation of Orbital Angular Momentum Light by Patterning Azopolymer Thin Films

Olaleye,

Raposo,

Ribeiro

2023

Photonics

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Orbital angular momentum (OAM) encoding is a promising technique to boost data transmission capacity in optical communications. Most recently, azobenzene films have gained attention as a versatile tool for creating and altering OAM-carrying beams. Unique features of azobenzene films make it possible to control molecular alignment through light-induced isomerization about the azo bond. This feature enables the fabrication of diffractive optical devices such as spiral phase plates and holograms by accurately imprinting a phase profile on the incident light. By forming azobenzene sheets into diffractive optical elements, such as spiral phase plates, one can selectively create OAM-carrying beams. Due to the helical wavefront and phase variation shown by these beams, multiple distinct channels can be encoded within a single optical beam. This can significantly increase the data transmission capacity of optical communication systems with this OAM multiplexing technique. Additionally, holographic optical components made from azobenzene films can be used to build and reconstruct intricate wavefronts. It is possible to create OAM-based holograms by imprinting holographic designs on azobenzene films, which makes it simpler to control and shape optical beams for specific communication requirements. In addition, azobenzene-based materials can then be suitable for integration into optical communication devices because of their reconfigurability, compactness, and infrastructure compatibility, which are the main future perspectives for achieving OAM-based technologies for the next generation, among other factors. In this paper, we see the possible use of azobenzene films in the generation and modification of OAM beams for optical communications through light-induced isomerization. In addition, the potential role of azobenzene films in the development of novel OAM-based devices that paves the way for the realization of high-capacity, OAM-enabled optical communication networks are discussed.

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Section: Background Generation and Application Of Oam Lightmentioning

confidence: 99%

Section: Background Generation and Application Of Oam Lightmentioning

confidence: 99%

Section: Background Generation and Application Of Oam Lightmentioning

confidence: 99%

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Generation of Orbital Angular Momentum Light by Patterning Azopolymer Thin Films

Olaleye,

Raposo,

Ribeiro

2023

Photonics

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“…In particular, OPOs are commonly used for the generation of nearto mid-infrared, continuously wavelength-tunable laser emissions with high output power, and work across all temporal modalities (continuous wave to ultrashort pulse). In the context of vortex laser beams, OPOs have been utilized for wide wavelength conversion [25] and OAM transfer (from the pump field to either the signal or idler fields) [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Tunable Near and Mid-Infrared (1.3–5 µm) Picosecond Pulsed Optical Vortex Parametric Oscillator

Aihemaiti,

Sulaiman,

Jashaner

et al. 2024

Photonics

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In this paper, we present a picosecond pulsed, synchronously pumped optical parametric oscillator producing vortex beam output with tunable wavelengths in the near- to mid-infrared range. The system utilizes a Nd:YVO4 picosecond pulsed solid-state laser emitting at a wavelength of 1.064 µm to pump a Z-shaped, singly resonant OPO which contains a MgO:PPLN crystal with a fan-shaped grating. The wavelength tuning characteristics of the OPO output are examined both as a function of the MgO:PPLN grating period and crystal temperature. The orbital angular momentum of the pump field can be selectively transferred to either the signal or idler fields by appropriately adjusting the location of the MgO:PPLN crystal within the OPO cavity. The maximum output power of the signal and idler vortex fields are 5.12 W and 3.46 W, respectively, for an incident pump power of 19 W.

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“…In this generalized mode, the LGL beam also lacks orbital angular momentum and has a planner wavefront. It is a type of laser beam that contains a helical phase front and travels in the form of spirals [9].…”

Section: Introductionmentioning

confidence: 99%

Self-focusing of low order LG laser beam in Gaussian plasma

Ghotra¹,

Singh²

2023

Laser Phys. Lett.

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Laguerre Gaussian (LG) laser beam propagations is presented to investigate the self-focusing in collision-less Gaussian plasma. This is by deriving the equations supporting self-focusing in plasma mediums by using WKB approximation. Additionally, a range of values of laser-plasma parameters which would fulfil these equations is considered. For the scenario of Gaussian and collision-less plasma, the study is contrasted. By utilizing a low order Laguerre Gaussian laser beam is more exciting as compare to using a Gaussian laser because it incorporates the propagation specific characters of Laguerre Gaussian Laser Beam. The observations are appeared in term of early self-focusing with LG laser beam. The investigation is expected to unfold the new and more effective scenario for self-focusing in plasma.

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Generation and expansion of Laguerre–Gaussian beams

Cited by 20 publications

References 153 publications

Generation of Orbital Angular Momentum Light by Patterning Azopolymer Thin Films

Generation of Orbital Angular Momentum Light by Patterning Azopolymer Thin Films

Tunable Near and Mid-Infrared (1.3–5 µm) Picosecond Pulsed Optical Vortex Parametric Oscillator

Self-focusing of low order LG laser beam in Gaussian plasma

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