Spiral-Phase-Defect Resonator and Its Application in Vortex Laser of Controllable Topological Charges

Lin, Yuan-Yao; Li, Yuwei

doi:10.1109/jphot.2022.3200490

Cited by 4 publications

(3 citation statements)

References 38 publications

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“…This structure has a high tuning sensitivity and stability, making it ideal for topological laser modes. Lin et al [ 59 ], from the National Sun Yat-sen University in Taiwan, conducted a study wherein they designed an optical resonator that uses a helical phase defect to generate vortex lasers, as illustrated in Figure 4 a. Figure 4 b shows that the spiral-phase-defect (SPD) has topological charges of −1 and +1.…”

Section: Fundamental Principles Of Topological Lasersmentioning

confidence: 99%

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Perovskite Topological Lasers: A Brand New Combination

Wang,

Wu,

Pan

2023

Nanomaterials

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Nanolasers are the essential components of modern photonic chips due to their low power consumption, high energy efficiency and fast modulation. As nanotechnology has advanced, researchers have proposed a number of nanolasers operating at both wavelength and sub-wavelength scales for application as light sources in photonic chips. Despite the advances in chip technology, the quality of the optical cavity, the operating threshold and the mode of operation of the light source still limit its advanced development. Ensuring high-performance laser operation has become a challenge as device size has been significantly reduced. A potential solution to this problem is the emergence of a novel optical confinement mechanism using photonic topological insulator lasers. In addition, gain media materials with perovskite-like properties have shown great potential for lasers, a role that many other gain materials cannot fulfil. When combined with topological laser modes, perovskite materials offer new possibilities for the operation and emission mechanism of nanolasers. This study introduces the operating mechanism of topological lasers and the optical properties of perovskite materials. It then outlines the key features of their combination and discusses the principles, structures, applications and prospects of perovskite topological lasers, including the scientific hurdles they face. Finally, the future development of low-dimensional perovskite topological lasers is explored.

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Section: Fundamental Principles Of Topological Lasersmentioning

confidence: 99%

“…( b ) Phase modulation provided by SLM and combining with limited helical and concave phases. ( c ) Phase modulation is provided by SLM and combines limited helical and concave phases, reproduced with permission from [ 59 ] copyright 2022, IEEE Photonics Journal .…”

Section: Figurementioning

confidence: 99%

Perovskite Topological Lasers: A Brand New Combination

Wang,

Wu,

Pan

2023

Nanomaterials

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“…Intra-cavity methods refer to laser resonators equipped with specialized optical elements such as spot defects [15], ring-shape pumping [16], a quarter-wave plate and q-plate [17], metasurface J-plates [18], spiral phase modulation [19,20], and integrated micro laser [21] that can directly generate vortex beam. Digital lasers, which are laser resonators with one or two intra-SLM panels that can mimic spot defects [22] or spiral phase modulations [23,24], offer the flexible generation and control of the topological charge of the output vortex beam.…”

Section: Introductionmentioning

confidence: 99%

Generating Optical Vortex Array Laser Beams of Superimposing Hermite–Gaussian Beams with a Dual–Phase Modulation Digital Laser System

Nguyen Thi,

Tsai,

Chu

2024

Photonics

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This study presents an efficient and practical intra-cavity approach for selectively generating vortex array laser beams employing a dual-phase modulation digital laser system, which has not yet been completed in single-phase modulation digital laser. The stable optical vortex array laser beams were formed by superimposing cavity Hermite–Gaussian (HG) eigenmodes. In particular, when the selected cavity HG modes shared the same Gouy phase, the resulting optical vortex beam could preserve its light field pattern, thereby maintaining the optical vortex properties in the near and far fields. Numerical results demonstrated that employing dual-phase modulation could establish optimal boundary conditions for the selection of HG modes within the cavity, successfully generating various vortex array laser beams. The experimental validation of the proposed method confirmed the ability to select optical vortex array lasers solely by controlling the loaded phase of the dual-phase modulation digital laser. These results demonstrate the ability of digital lasers to generate and dynamically control optical vortex array lasers.

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