APL PHOTONICS 是光子学社区开放获取多学科研究的新专用家园。该杂志发表的基础和应用成果显着提升了物理学、化学、生物学和材料科学领域的光子学知识。

APL Photonics is a new dedicated platform for multidisciplinary research in the field of photonics, providing open access to the community. The journal publishes significant foundational and applied research that enhances the understanding of photonics across physics, chemistry, biology, and materials science.

APL Photonics 是光子学领域的开放获取多学科研究新平台。该期刊发表的基础和应用研究成果显著推动了物理学、化学、生物学和材料科学等领域的光子学知识发展。

APL Photonics

The mass production of augmented reality (AR) waveguides has been challenging due to the intricate nature of the fabrication technique and the high precision required for their optical characteristics. In this paper, we have presented a novel and low-cost approach for fabricating geometric optical waveguides designed for AR applications utilizing 3D printing techniques. To strike a balance between optical performance and fabrication feasibility, we have optimized the conventional geometric waveguide design to facilitate easier fabrication. It is worth noting that our proposed method does not require molding, dicing, or post-surface polishing after printing. A prototype based on this method has been successfully fabricated, showing the immersion between the virtual image and the real-world scene. The proposed method has great potential for adaptation to mass production in various AR applications.

Dechuan Sun

Gregory Tanyi

Alan Lee

Chris French

Younger Liang

Christina Lim

Ranjith R. Unnithan

Additive 3D printed optical waveguide for augmented reality

增材制造的3D打印光学波导用于增强现实

We investigate intermodal forward Brillouin scattering in a solid-core photonic crystal fiber (PCF), demonstrating efficient power conversion between the HE11 and HE21 modes, with a maximum gain coefficient of 21.4 W−1 km−1. By exploring mechanical modes of different symmetries, we observe both polarization-dependent and polarization-independent intermodal Brillouin interaction. Finally, we discuss the role of squeeze film air damping and leakage mechanisms, ultimately critical to the engineering of PCF structures with enhanced interaction between high-order optical modes through flexural mechanical modes.

Paulo F. Jarschel

Erick Lamilla

Yovanny A. V. Espinel

Ivan Aldaya

Julian L. Pita

Andres Gil-Molina

Gustavo S. Wiederhecker

Paulo Dainese

Intermodal Brillouin scattering in solid-core photonic crystal fibers

固体芯光子晶体光纤中的模间布里渊散射

As a paradigmatic microwave photonic resonant system that is capable of producing high-quality self-sustained microwave oscillations, the optoelectronic oscillator (OEO) has been intensively investigated in recent years, and a diversity of new insights and breakthroughs have been proposed and demonstrated. In this perspective, we discuss the recent progress, opportunities, and challenges of OEOs. Specifically, an overview of different OEO schemes for single-frequency and complex microwave signal generation is provided. Emerging advances in integrated OEO and applications of OEO are briefly reviewed. We also discuss the remaining challenges and opportunities in this field.

Tengfei Hao

Wei Li

Ninghua Zhu

Ming Li

Perspectives on optoelectronic oscillators

光电子振荡器透视

Optical diffraction tomography can be performed with low phototoxicity and photobleaching to analyze 3D cells and tissues. It is desired to develop high throughput and powerful data processing capabilities. We propose high bandwidth holographic microscopy (HBHM). Based on the analyticity of complex amplitudes, the unified holographic multiplexing transfer function is established. A high bandwidth scattering field is achieved via the k-space optical origami of two 2D wavefronts from one interferogram. Scanning illumination modulates the high-horizontal and axial k-space to endow synthetic-aperture from 2D high space-bandwidth product (SBP) scattering fields. The bright-field counterpart SBP of a single scattering field from HBHM is 14.6 megapixels, while the number of pixels is only 13.7 megapixels. It achieves an eight-fold SBP enhancement under the same number of pixels and diffraction limit. The HBHM paves the way toward the performance of high throughput, large-scale, and non-invasive histopathology, cell biology, and industrial inspection.

Zhengzhong Huang

Liangcai Cao

<i>k</i>-space holographic multiplexing for synthetic aperture diffraction tomography

k空间全息多路复用技术在合成孔径衍射层析成像中的应用

In digital holographic microscopy, phase aberrations, which are usually caused by the imperfections of components and nontelecentric configuration of the optical system, severely affect the visualization and quantitative measurement for phase-contrast imaging. Here, we propose a purely numerical and automatic method to compensate for phase aberrations. Without any manual involvement of selecting a sample-free background, the compensation is cast as a surface fitting problem, in which the aberration surface is approximated by formulating an inverse problem. By adopting the ℓ1-norm as the loss function and by minimizing an objective function, aberrations can be accurately fitted and thus removed numerically. Synthetic and experimental results are demonstrated to verify the efficacy of this method over the least squares method.

Zhenbo Ren

Jianlin Zhao

Edmund Y. Lam

Automatic compensation of phase aberrations in digital holographic microscopy based on sparse optimization

基于稀疏优化的数字全息显微镜相位畸变自动补偿

The coupling between acoustic vibrations in a lithium niobate bulk acoustic wave resonator and microwave photons of a re-entrant microwave cavity was investigated at a temperature close to 4 K. Coupling was achieved by placing the acoustic resonator in the location of the re-entrant cavity electric field maxima in a symmetric “split-post” configuration with a large overlap between the microwave field and the acoustic mode, allowing acoustic modulations of the microwave frequency. We show that the acoustic modes in this setup retain large inherent quality factors of greater than 106. A maximum optomechanical coupling rate was determined to be g0 = 0.014 mHz, four orders of magnitude larger than previous results obtained using a quartz BAW at 4 K in a similar experimental setup but using a single post-re-entrant cavity resonator.

S. Parashar

W. M. Campbell

J. Bourhill

E. Ivanov

M. Goryachev

M. E. Tobar

Upconversion of phonon modes into microwave photons in a lithium niobate bulk acoustic wave resonator coupled to a microwave cavity

锂铌酸锂体声波谐振器与微波腔耦合中声子模式向微波光子的上转换

We present a numerical approach to compute and characterize both guided and leaky modes in a multilayer planar optical waveguide made of any lossy and dispersive materials. Usually, in numerical calculations based on finite element methods, perfectly matched layers (PMLs) are used to truncate the unbounded substrate and cover layers. However, it is difficult to make such PMLs transparent for both guided and leaky modes at the same time, and often, different or even contradictory PML parameters are required for these two types of modes. In contrast, the transparent boundary conditions (TBCs) that we use in this work can terminate the unbounded waveguide and, simultaneously, provide perfect transparency for the modes. In addition, this type of boundary condition does not contaminate the solutions with non-existent modes, such as PML modes. More importantly, the TBC approach yields the nonlinear eigenvalue solutions that can be intrinsically mapped to the parameter space of transverse wavenumbers in the claddings. This allows us to uniquely determine the power flow properties of all the calculated modes. A finite element Python package is developed to treat a variety of planar waveguides in a robust and systematic way.

Xiaorun Zang

Andriy Shevchenko

Analysis of guided and leaky modes of planar optical waveguides using transparent boundary conditions

使用透明边界条件分析平面光波导的导模和泄漏模

The development of compact fiber-based light sources emitting over a wide wavelength range in the mid-infrared and their application to the detection of greenhouse gases and volatile organic compounds still remain of critical interest. In the present work, we make use of several dedicated infrared fibers for implementing a mid-infrared optical device pumped by a thulium doped-fiber laser around 1.965 μm that simultaneously enables a first nonlinear stage of frequency conversion and supercontinuum generation and a second linear stage of gas absorption spectroscopy. As a proof-of-principle, we carry out mid-infrared supercontinuum absorption spectroscopy of methane around 7.7 μm by means of a hollow-core fiber-based gas cell combined to a commercial Fourier-transform infrared spectrometer. Our all-fiber configuration operating in the femtosecond regime at megahertz repetition rate allows the detection of methane concentrations as low as 20 ppm.

Rémi Bizot

Idris Tiliouine

Frédéric Désévédavy

Grégory Gadret

Clément Strutynski

Esteban Serrano

Pierre Mathey

Bertrand Kibler

Sébastien Février

Frédéric Smektala

All-fiber supercontinuum absorption spectroscopy for mid-infrared gas sensing

全光纤超连续谱吸收光谱技术用于中红外气体传感

Optical micromotors are powerful tools for trapping and rotating microparticles in various fields of bio-photonics. Conventionally, optical micromotors are built using bulk optics, such as microscope objectives and SLMs. However, optical fibers provide an attractive alternative, offering a flexible photon platform for optical micromotor applications. In this paper, we present an optical micromotor designed for 3D manipulation and rotation based on a single fiber optical vortex tweezer. A tightly focused vortex beam is excited by preparing a spiral zone plate with an ultrahigh numerical aperture of up to 0.9 at the end facet of a functionalized fiber. The focused vortex beam can optically manipulate and rotate a red blood cell in 3D space far from the fiber end facet. The trapping stiffness in parallel and perpendicular orientations to the fiber axis are measured by stably trapping a standard 3-µm silica bead. The rotational performance is analyzed by rotating a trimer composed of silica beads on a glass slide, demonstrating that the rotational frequency increases with rising optical power and the rotational direction is opposite to the topological charge of the spiral zone plate. The proposed fiber micromotor with its flexible manipulation of microparticle rotation circumvents the need for the precise relative position control of multiple fiber combinations and the use of specialized fibers. The innovations hold promising potential for applications in microfluidic pumping, biopsy, micromanipulation, and other fields.

Luping Wu

Zhiyong Bai

Yuji Wang

Rui Liu

Jian Yu

Jianjun Ran

Zilun Luo

Shen Liu

Ying Wang

George Y. Chen

Jun He

Changrui Liao

Yiping Wang

Micromotor based on single fiber optical vortex tweezer

基于单根光纤光学涡旋镊子的微电机

Since the early 1990s, when researchers began to explore rare-earth-doped mid-infrared glass fibers, fiber laser systems have emerged as promising high-brightness light sources with wavelengths beyond 2.5 μm for applications in spectroscopy and sensing, optical communications and ranging, and processing of complex materials and bio-tissues, to name a few. Despite a substantial research effort over the years, mid-infrared fiber lasers and amplifiers have yet to reach the maturity required for widespread and/or industrial use. The well-known advantages of fiber lasers over their bulk counterparts, namely superior stability and beam quality, compactness, cost-efficiency, flexibility, and maintenance-free operation, can only be fully harnessed in the mid-infrared wavelength range with the development of non-existent yet essential fiber-based components made of advanced fluoride or chalcogenide-glass materials. This Perspective reports on the recent significant achievements that have been made in the design and fabrication of in-fiber and fiber-pigtailed components for fully integrated mid-infrared fiber laser systems. Building upon a comprehensive overview of the mechanical, thermodynamic, and optical properties of fluoride and chalcogenide glass fibers, as well as their interaction with light, we aim to highlight current challenges and opportunities and provide an informed forecast of future advancements in mid-infrared all-fiber laser research.

Kirill Grebnev

Boris Perminov

Toney T. Fernandez

Alex Fuerbach

Maria Chernysheva

Fluoride and chalcogenide glass fiber components for mid-infrared lasers and amplifiers: Breakthroughs, challenges, and future perspective

氟化物和硫属化物玻璃光纤元件用于中红外激光器和放大器：突破、挑战与未来展望

短名	APL Photonics
Journal Impact	5.51
国际分区	PHYSICS, APPLIED(Q1)
期刊索引	SCI Q1中科院 1 区

ISSN	2378-0967
h-index	56
国内分区	物理与天体物理(1区)物理与天体物理光学(2区)物理与天体物理物理应用(2区)

涉及主题	物理光学量子力学材料科学工程类光电子学计算机科学电气工程化学电信激光器有机化学数学复合材料纳米技术光子学
出版信息	出版商: American Institute of Physics Inc.，出版周期: ，期刊类型: journal，开源期刊: 是
基本数据	创刊年份: 2016，原创研究文献占比: 100.00%，自引率:3.70%， Gold OA占比: 91.81%
期刊费用	$2750详情
平均审稿周期	网友分享经验：19 Weeks

APL Photonics

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