Experiments and Perturbative Analysis of Dammann-Grating-Based Aperture Filling in a Passive Coherent Beam Combination

Liu, Houkang; He, Bing; Zhou, Jun; Yang, Yifeng; Zheng, Yi; Hu, Man; Lou, Qihong

doi:10.1109/jlt.2014.2322863

Cited by 8 publications

(3 citation statements)

References 28 publications

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“…Hence, this paper mainly focuses on active phase-locking tech-niques and only reviews the most conventional passive methods in brief. To date, various research has been conducted on passive phase-locking CBC of fiber lasers [229,236,[239][240][241][242][243][244][245][246][247][248][249][250][251][252][253][254][255][256][257]. The phase control in passive architecture can be classified into four distinct categories: a common resonator, optical phase conjugate (PC), evanescent (leaky) wave coupling, and self-organized technique.…”

Section: Passive Phase Controlmentioning

confidence: 99%

Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

2021

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Fiber laser technology has been demonstrated as a versatile and reliable approach to laser source manufacturing with a wide range of applicability in various fields ranging from science to industry. The power/energy scaling of single-fiber laser systems has faced several fundamental limitations. To overcome them and to boost the power/energy level even further, combining the output powers of multiple lasers has become the primary approach. Among various combining techniques, the coherent beam combining of fiber amplification channels is the most promising approach, instrumenting ultra-high-power/energy lasers with near-diffraction-limited beam quality. This paper provides a comprehensive review of the progress of coherent beam combining for both continuous-wave and ultrafast fiber lasers. The concept of coherent beam combining from basic notions to specific details of methods, requirements, and challenges is discussed, along with reporting some practical architectures for both continuous and ultrafast fiber lasers.

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Section: Passive Phase Controlmentioning

confidence: 99%

Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

2021

View full text Add to dashboard Cite

show abstract

“…Hence, this paper mainly focuses on active phase-looking techniques and just reviews the most conventional passive methods in brief. To date, various research has been conducted on passive phase-locking CBC of fiber lasers [229,236,[239][240][241][242][243][244][245][246][247][248][249][250][251][252][253][254][255][256][257]. The phase control in passive architecture can be classified into four distinct categories: a common resonator, optical phase conjugate (PC), evanescent (leaky) wave coupling, and self-organized technique.…”

Section: Passive Phase Controlmentioning

confidence: 99%

Towards Ultimate High-power Scaling: Coherent Beam Combing of Fiber Lasers

Fathi¹,

Närhi²,

Gumenyuk³

2021

Preprint

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Fiber laser technology has been demonstrated as a versatile and reliable approach for laser source manufacturing with a wide range of applicability in various fields ranging from science to industry. The power/energy scaling of single fiber laser systems has faced several fundamental limitations. To overcome them and to boost the power/energy level even further, combining the output powers of multiple lasers has become the primary approach. Among various combining techniques, the coherent beam combining of fiber amplification channels is the most promising approach, instrumenting ultra-high power/energy lasers with near-diffraction-limited beam quality. This paper provides a comprehensive review of the progress of coherent beam combining for both continuous-wave and ultrafast fiber lasers. The concept of coherent beam combining from basic notions to specific details of methods, requirements, and challenges are discussed, along with reporting some practical architectures for both continuous and ultrafast fiber lasers.

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“…This significantly augmented the theoretical foundation and expanded the application domain of Dammann gratings. Presently, DGs find ubiquitous utility in diverse fields such as optical communication [5][6], monocular/stereo vision 3D measurement [7][8], and structured light projection [9][10].…”

Section: Introductionmentioning

confidence: 99%

Polarization Multiplexing Dammann Grating Based on All-Dielectric Metasurface

Wu,

Huang,

et al. 2024

IEEE Photonics J.

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Dammann gratings (DG) have become a powerful tool for generating multi-level spectral points in equal-intensity speckle arrays through binary phase variation. Conventional DGs are limited to regular dot arrays, such as squares and circular rings. The emergence of metasurface-based coding technology opens new avenues for ultra-thin, compact, and miniaturized DGs. In this study, we present a comprehensive exploration of polarization multiplexing DGs employing an alldielectric metasurface. Our work introduces a novel twodimensional (2D) DG optimization algorithm tailored for specific desired array patterns, including non-centrally symmetric arrays and arrays maximizing specific desired orders. This innovation significantly broadens the applications of DGs in irregular arrays.Additionally, in contrast to the numerous dimension sizes generated by conventional Gerchberg-Saxton (GS) algorithms, the proposed method employs a silicon nanorod array with only three distinct sizes. This streamlined approach greatly enhances precision control in nanofabrication and facilitates large-scale industrial replication. Furthermore, the incorporation of polarization multiplexing in DGs enhances their versatility, amplifying both channel capacity and spectrum utilization, and allowing for the secure encoding of private information through polarization states. The utilization of orthogonal polarization states becomes crucial for information reuse and hiding, where independent coding information is applied to orthogonally polarized light, enabling applications such as secure information reuse and hiding. Simultaneously, our method maintains exemplary performance metrics, boasting efficiencies and uniformities of 75% and 77%, respectively. Notably, our approach achieves effective suppression of the 0 th diffraction order intensity, a crucial advancement with substantial implications for practical metasurface optics applications. The proposed method holds great promise across diverse applications, including structured light projection, optical communication, and 3D imaging, paving the way for DG integration into various scientific and technological domains.

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Experiments and Perturbative Analysis of Dammann-Grating-Based Aperture Filling in a Passive Coherent Beam Combination

Cited by 8 publications

References 28 publications

Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

Towards Ultimate High-power Scaling: Coherent Beam Combing of Fiber Lasers

Polarization Multiplexing Dammann Grating Based on All-Dielectric Metasurface

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