Generating vortex laser beams by converting ince-gaussian laser beams with an astigmatic mode converter

Chu, Shu Chun; Ohtomo, Takayuki; Tokunaga, Keisuke; Otsuka, Kenju

doi:10.1109/cleopr.2009.5292578

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…Since the repetition rate of pulse trains is 1 MHz, the maximum pulse energy is calculated to be 20.36 μJ and 20.12 μJ. In addition, the maximum peak power is calculated to be 46.3 MW (radial vector beam) and 46.8 MW (azimuthal vector beam), which are two orders of magnitude higher than in previously reported research [11] . As shown in Fig.…”

Section: Resultsmentioning

confidence: 61%

“…Cylindrical vector beams (CVBs) have attracted enormous scientific attention due to their unique optical properties, such as axially symmetric field amplitude distributions and radial or azimuthal polarization states, which enable imaging resolution below the diffraction limit and interact without the undesirable anisotropy produced by a linearly-polarized light [1][2][3][4][5] . A variety of applications utilizing CVBs have been explored such as high resolution imaging, nanoparticle manipulation, terahertz technology, data storage, and optical communication [6][7][8][9][10][11] . Generally, several typical optical devices, such as astigmatic mode converters (AMCs), liquid-crystal spatial light modulators (SLMs), and forked gratings, have been used as mode converters to transfer spatially homogeneous polarizations (e.g., linear or circular polarization) into spatially inhomogeneous cylindrical vector polarizations [12][13][14][15][16] .…”

Section: Introductionmentioning

confidence: 99%

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High peak power femtosecond cylindrical vector beams generation in a chirped-pulse amplification laser system

et al. 2022

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Cylindrical vector beams (CVBs), with non-uniform state of polarizations, have become an indispensable tool in many areas of science and technology. However, little research has explored high power CVBs at the femtosecond regime. In this paper, we report on the generation of high quality CVBs with high peak power and femtosecond pulse duration in a fiber chirpedpulse amplification laser system. The radially (azimuthally) polarized vector beam has been obtained with a pulse duration of 440 fs (430 fs) and a maximum average output power of 20.36 W (20.12 W). The maximum output pulse energy is ∼20 μJ at a repetition rate of 1 MHz, corresponding to a high peak power of ∼46 MW. The comparison between simulated intensity profiles and measured experimental results suggests that the generated CVBs have a remarkable intensity distribution. The proposed configuration of our laser system provides a promising solution for high quality CVBs generation with the characteristics of high peak power, ultrashort pulse duration, and high mode purity.

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Section: Resultsmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

High peak power femtosecond cylindrical vector beams generation in a chirped-pulse amplification laser system

et al. 2022

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“…These extra-cavity PILB transformation techniques are based on coherent beam superposition within interferometric instruments [15,16] and beam shaping schemes employing anamorphic optical systems (AOSs) [17,18]. These techniques have been applied to transform Hermite-Gaussian [19,20], Laguerre-Gaussian [18], and Ince-Gaussian [16,21] laser modes. Beam transformations employing anamorphic optical systems are insensitive to vibrations, and are easier to implement when compared to interferometric techniques.…”

Section: Introductionmentioning

confidence: 99%

Formation of propagation invariant laser beams with anamorphic optical systems

Soskind

2015

SPIE Proceedings

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Propagation invariant structured laser beams play an important role in several photonics applications. A majority of propagation invariant beams are usually produced in the form of laser modes emanating from stable laser cavities. This work shows that anamorphic optical systems can be effectively employed to transform input propagation invariant laser beams and produce a variety of alternative propagation invariant structured laser beam distributions with different shapes and phase structures. This work also presents several types of anamorphic lens systems suitable for transforming the input laser modes into a variety of structured propagation invariant beams. The transformations are applied to different laser mode types, including Hermite-Gaussian, Laguerre-Gaussian, and Ince-Gaussian field distributions. The influence of the relative azimuthal orientation between the input laser modes and the anamorphic optical systems on the resulting transformed propagation invariant beams is presented as well.

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The resilience of Hermite–Gaussian and orbital angular momentum modes for free space optical communication in atmospheric turbulence

Selvi,

Samydurai,

Vasuhi

2024

J Opt

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Generating vortex laser beams by converting ince-gaussian laser beams with an astigmatic mode converter

Cited by 3 publications

References 10 publications

High peak power femtosecond cylindrical vector beams generation in a chirped-pulse amplification laser system

High peak power femtosecond cylindrical vector beams generation in a chirped-pulse amplification laser system

Formation of propagation invariant laser beams with anamorphic optical systems

The resilience of Hermite–Gaussian and orbital angular momentum modes for free space optical communication in atmospheric turbulence

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