Article
Physics, Multidisciplinary
Xingping Wang, Gang Zhao, Kang Jiao, Bing Chen, Ruifeng Kan, Zhenhua Cong, Jianguo Liu, Weiguang Ma
Summary: This article presents optical feedback cavity ringdown spectroscopy using a linear Fabry-Perot cavity and a cost-effective DFB laser. By utilizing optical feedback technique, the coupling efficiency is significantly improved, resulting in a high signal-to-noise ratio and detection sensitivity.
FRONTIERS IN PHYSICS
(2022)
Article
Optics
A. P. Porfirev, S. A. Fomchenkov, D. P. Porfiriev, S. N. Khonina, S. V. Karpeev
Summary: In this study, we investigate the possibility of trapping airborne light-absorbing particles using a multi-linear optical trap created with a cylindrical lens. We find that different shaped light lines can be used to trap particles of different sizes due to the photophoretic forces being dependent on light intensity. However, the fading intensity of non-main light lines caused by initial laser power attenuation leads to a significant decrease in trapping robustness and the escape of smaller trapped particles.
Article
Chemistry, Multidisciplinary
Nobuaki Oyamada, Hiro Minamimoto, Kei Murakoshi
Summary: This article discusses the use of plasmonic optical trapping to control the motion of small molecules at room temperature, demonstrating a method using plasmonic structures to achieve selective molecular condensation and create new adsorption isotherms.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Review
Chemistry, Multidisciplinary
Yuan-Pin Chang, Yanita Devi, Chun-Hu Chen
Summary: Understanding the physicochemical properties and heterogeneous processes of aerosols is crucial for their impacts and applications. Advances in experimental techniques have allowed for control of single aerosol particles and research at the single-particle level, leading to breakthroughs in recent years. Graphene oxide aerosols show promise as prototype aerosols with unique properties for various applications.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Optics
Xi Xie, Xianyou Wang, Changjun Min, Haixiang Ma, Yunqi Yuan, Zhangyu Zhou, Yuquan Zhang, Jing Bu, Xiaocong Yuan
Summary: This study proposes a new method for accurately trapping and manipulating single or multiple particles in holographic optical surface-wave tweezers. By adjusting the optical potential wells formed by surface waves, the targeted single particle can be trapped while pushing away surrounding particles, and the particle can be dynamically controlled using a holographic tweezers beam. Different particle samples, including gold particles and biological cells, can be applied in this system. This method has significant potential applications in single-particle spectroscopy, particle sorting, and nano-assembly.
PHOTONICS RESEARCH
(2022)
Article
Optics
Liyong Cui, Neng Wang
Summary: This work investigates the trapping and self-assembly of particles by a single photonic chiral surface wave (PCSW) in a waveguide. It shows that PCSW can stably trap and assemble particles of arbitrary sizes, shapes, and dielectric constants. The unique properties of PCSW allow for independent particle trapping during the self-assembly process.
Article
Optics
Souvik Sil, Anita Pahi, Aman Anil Punse, Ayan Banerjee
Summary: We demonstrate optical trapping of multiple absorbing particles in air using different focal lengths of convex lenses. The number and size of trapped particles are found to depend on the focal length. Multiple experimental observations are explained by a numerical simulation, which also reveals a reduction in particle size with increasing focal lengths.
Article
Physics, Applied
Ryohei Terabayashi, Keisuke Saito, Volker Sonnenschein, Yuki Okuyama, Kazuki Iwamoto, Kazune Mano, Yuta Kawashima, Tetsuo Furumiya, Koji Tojo, Shinichi Ninomiya, Kenji Yoshida, Hideki Tomita
Summary: This paper reports a high precision trace analysis technique for gas molecules using mid-infrared laser absorption spectroscopy with a high-finesse optical cavity. The optical detection of radiocarbon (C-14) based on the cavity ringdown spectroscopy with a quantum cascade laser has gained attention as an alternative to accelerator mass spectrometry. The authors present a compact-packaged narrow-linewidth QCL system utilizing resonant optical feedback and demonstrate its capability for rapid analysis of (CO2)-C-14.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Multidisciplinary Sciences
Wenjia Chen, Yiwen Ou, Chunfu Cheng, Yuanchang Zhu, Wen Xiao, Hui Lv
Summary: A novel active fiber cavity ringdown technique using frequency-shifted interferometry is proposed. It allows monitoring of external parameters in the space domain by measuring the ringdown distance. Compared to existing methods, this technique eliminates the need for pulsed laser and uses continuous-wave laser for improved stability and precision. A proof-of-concept magnetic field sensor achieved the highest sensitivity compared to time-domain methods.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Johannes Frueh, Sven Rutkowski, Tieyan Si, Yu-Xuan Ren, Meiyu Gai, Sergei I. Tverdokhlebov, Guangyu Qiu, Jean Schmitt, Qiang He, Jing Wang
Summary: This study reports on the optical trapping of two artificial plasmonic microparticles: one with isotropic nanoparticles covering the surface (homogeneous particle) and an anisotropic Janus micro-particle coated with a gold nano-layer. The plasmonic gold nanostructures absorb light energy and produce heat, significantly affecting the optical trapping. The developed method allows for determining both photophoretic and thermophoretic forces acting on the particles, providing new paths for micromachine analysis and control.
APPLIED SURFACE SCIENCE
(2021)
Article
Multidisciplinary Sciences
Ye Yang, Yaozhang Yang, Dingyuan Liu, Yuanyuan Wang, Minqiao Lu, Qi Zhang, Jiqing Huang, Yongchuan Li, Teng Ma, Fei Yan, Hairong Zheng
Summary: Acoustic tweezers are a technology that controls target movement through the interaction between acoustic waves and objects. This study demonstrates the use of genetically engineered bacteria that can produce sub-micron gas vesicles, enhancing their acoustic sensitivity and allowing manipulation by ultrasound. The bacteria can be trapped and manipulated using phased-array-based acoustic tweezers, enabling their flow in live mice.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Zhenzhen Chen, Zhewei Cai, Wenbo Liu, Zijie Yan
Summary: Optical tweezers can control the position and orientation of individual colloidal particles in solution, providing unique prospects for single-particle spectroscopy and microscopy. This perspective discusses the underlying principles, combinations, and applications of optical tweezers with different spectroscopy and microscopy techniques, as well as the challenges and opportunities for performing spectroscopy and microscopy on single nanoparticles with optical tweezers.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Analytical
Guosheng Ma, Yabai He, Bing Chen, Hao Deng, Ying Liu, Xingping Wang, Zhihao Zhao, Ruifeng Kan
Summary: The cavity ringdown spectrometer matches laser wavelengths to optical resonances of an optical cavity using step-scanning and dithering method. It is capable of quasi-simultaneous measurements of multiple gas species with high detection sensitivity. The system's high precision and sensitivity make it useful for applications such as environmental monitoring.
Article
Chemistry, Analytical
C. Ghanashyam, Sachin Shetty, Sanjay Bharati, Santhosh Chidangil, Aseefhali Bankapur
Summary: The study introduces a new method of optical trapping and simultaneous micro-Raman spectroscopy using an optical vortex beam, successfully comparing the conformational state of hemoglobin molecules near and inside red blood cell membranes. Due to the face-on orientation, the Raman spectra obtained using the vortex beam show a significant contribution from membrane components compared to those obtained using the Gaussian beam.
ANALYTICAL CHEMISTRY
(2021)
Article
Physics, Multidisciplinary
Di Huang, Pengcheng Wan, Ling Zhou, Haiqin Guo, Ruihuang Zhao, Jun Chen, Jack Ng, Junjie Du
Summary: The working mechanism of single-beam optical tweezers is thoroughly examined using a newly established method. The conservative and nonconservative components of optical force are calculated for different optical regimes, and the concept of an "optical trapping core" is proposed to better illustrate the stability of the trapping process.
NEW JOURNAL OF PHYSICS
(2022)
Article
Instruments & Instrumentation
Zhiyong Gong, Yong-Le Pan, Gorden Videen, Chuji Wang
APPLIED SPECTROSCOPY
(2019)
Article
Optics
Wenbo Sun, Bruce A. Wielicki, Rosemary R. Baize, Constantine Lukashin, Yongxiang Hu, Evgenij Zubko, Gorden Videen, Sungsoo S. Kim, Young-Jun Choi
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2019)
Article
Astronomy & Astrophysics
Larissa Hradyska, Dmitry G. Stankevich, Vasilij G. Shevchenko, Yuriy G. Shkuratov, Gorden Videen
PLANETARY AND SPACE SCIENCE
(2019)
Article
Astronomy & Astrophysics
Yu Shkuratov, Ye Surkov, M. Ivanov, V Korokhin, V Kaydash, G. Videen, C. Pieters, D. Stankevich
Article
Astronomy & Astrophysics
Enos Picazzio, Igor Luk'yanyk, Oleksandra Ivanova, Evgenij Zubko, Oscar Cavichia, Gorden Videen, Sergei M. Andrievsky
Article
Optics
Sequoyah Walters, Jason Zallie, Gabriel Seymour, Yong-Le Pan, Gorden Videen, Kevin B. Aptowicz
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2019)
Article
Optics
Jessica A. Arnold, Aimable Kalume, Chuji Wang, Gorden Videen, Yong-Le Pan
Summary: A novel method for actively controlling circular and/or spin-rotational motion of optically trapped airborne micro-particles is presented using a shaped laser beam and rotation of a cylindrical lens. This method demonstrates how torque can be exerted on particles in the trap to achieve circular or spin-rotational motion.
Article
Astronomy & Astrophysics
Jessica A. Arnold, Alycia J. Weinberger, Gorden Videen, Evgenij S. Zubko
Summary: This study investigates the impact of assumptions about dust grain shape on the estimation of composition and grain size distribution of the AU Mic debris disk. By analyzing scattered-light data, the effect of scattering phase function on measured flux ratios as a function of wavelength and projected distance is studied. The results show that the retrieved grain properties vary depending on the grain shape model used.
ASTROPHYSICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
Anhelina Voitko, Evgenij Zubko, Oleksandra Ivanova, Igor Luk'yanyk, Anton Kochergin, Marek Husarik, Gorden Videen
Summary: This study measures the photometric color of Comet 29P/Schwassmann-Wachmann 1 and finds variations in color slope, indicating different compositions of particles in the coma. The research also calculates the dustload and dust production rate of the inner coma, which are found to be relatively high compared to other comets.
Article
Optics
Yehor Surkov, Yuriy Shkuratov, Yong-Le Pan, Aimable Kalume, Joshua Santarpia, Evgenij Zubko, Yongxiang Hu, Gorden Videen
Summary: We calculate the light-scattering Mueller matrix elements of spiral particles with morphological chirality. For orientation-averaged systems, none of the Mueller matrix elements are equal to zero, although there are basic relations between enantiomers. The circular-polarization signal can exceed 10%, particularly in the backscattering region due to the coherent-backscattering mechanism.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2023)
Article
Astronomy & Astrophysics
Jessica A. Arnold, Alycia J. Weinberger, George Cody, Gorden Videen, Olga Munoz
Summary: Measurements of visible and near-infrared reflection, as well as mid-to-far-infrared emission, allow for investigation into the composition of planetary surfaces. Laboratory measurements and comparisons of optical properties of various organic analogs help to identify the origin of spectral features such as red spectral slopes and absorption features.
PLANETARY SCIENCE JOURNAL
(2021)
Article
Optics
Haifa Alali, Zhiyong Gong, Gorden Videen, Yong-Le Pan, Olga Munoz, Chuji Wang
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2020)
Article
Astronomy & Astrophysics
Evgenij Zubko, Gorden Videen, Jessica A. Arnold, Benjamin MacCall, Alycia J. Weinberger, Sungsoo S. Kim
ASTROPHYSICAL JOURNAL
(2020)
Article
Environmental Sciences
Wenbo Sun, Yongxiang Hu, Rosemary R. Baize, Gorden Videen, Sungsoo S. Kim, Young-Jun Choi, Kyungin Kang, Chae Kyung Sim, Minsup Jeong, Ali Omar, Snorre A. Stamnes, David G. MacDonnell, Evgenij Zubko
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2019)
Article
Astronomy & Astrophysics
Jessica A. Arnold, Alycia J. Weinberger, Gorden Videen, Evgenij S. Zubko
ASTRONOMICAL JOURNAL
(2019)
Article
Optics
Jianbao Zhao, Brant E. Billinghurst, Paul L. Raston
Summary: The far-infrared spectrum of room temperature formic acid labeled with 13C has been recorded and analyzed, leading to the determination of accurate line positions and predictions relevant to Earth's atmosphere and interstellar sources.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Semen Vasilchenko, Alexander Solodov, Oleg Egorov, Vladimir Tyuterev
Summary: Ozone plays a crucial role in atmospheric chemistry and radiative processes, and it may serve as a potential biosignature species in exoplanetary observations. This study utilized a continuous-wave cavity-ring-down spectrometer to accurately measure the absorption cross-sections of ozone in the near-infrared range. The results provide more precise data and have potential applications in atmospheric research.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Baorui Huang, Bo Peng, Qifeng Ren, Sheng Liao
Summary: This study utilizes the polarization bidirectional reflectance distribution function (p-BRDF) model derived from the microfacet theory to analyze the spectral p-BRDF of a brass surface. The results show that factors such as polarization state, wavelength, surface roughness, and permittivity have a significant impact on the distribution of BRDF on the object surface.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Qingwei Duan, Jiajie Wang, Qiwei Li, Xiang'e Han, Kuan Fang Ren
Summary: This paper introduces the applications of the generalized Lorenz-Mie theory (GLMT) and the vectorial complex ray model (VCRM) in the interaction between beams and particles. By comparing the experimental results, it is found that VCRM performs well in Gaussian beam scattering problems, providing a new method for studying the scattering of shaped beams by large particles/objects of any shape.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Yuefan Du, Xiaoping Li, Lei Shi, Fangyan Li, Shurong Yuan
Summary: This study proposes a physics-constrained model that utilizes the distribution characteristics of gas spectral parameters to predict spectral parameters for unknown wavelengths. Experimental results show that the model improves prediction accuracy and increases the data volume of gas spectral parameters by 4-5 times.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Laurentius Windholz, Imran Siddiqui, Shamim Khan, Syed Tanweer Iqbal
Summary: In this study, we report the discovery of two energy levels of the Pr atom that exhibit strong J-mixing, as well as the observed hyperfine structure patterns. The composition of wave functions, in addition to J-values, plays a crucial role in determining the appearance of these patterns.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Matthias Germann, Adrian Hjalten, Jonathan Tennyson, Sergei N. Yurchenko, Iouli E. Gordon, Christian Pett, Isak Silander, Karol Krzempek, Arkadiusz Hudzikowski, Aleksander Gluszek, Grzegorz Sobon, Aleksandra Foltynowicz
Summary: In this study, optical frequency comb Fourier transform spectroscopy was used to record the spectroscopic data of formaldehyde in a specific frequency range. The line positions and intensities of rovibrational transitions were obtained through line-by-line fitting. By incorporating these accurate line positions into the analysis, more energy levels and rovibrational transitions were predicted with reduced uncertainties in the H2CO spectrum.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Leonardo A. Ambrosio, Jhonas O. de Sarro, Gerard Gouesbet
Summary: This study derives a polychromatic version of the generalized Lorenz-Mie theory stricto sensu (GLMT) by expanding arbitrary time-dependent fields into partial waves using Bromwich scalar potentials. The new formalism introduces field shape spectra (FSSs) which are intrinsically frequency-dependent, modifying and redefining the physical quantities expressed in the monochromatic GLMT.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Patrick C. Chaumet
Summary: The paper proposes two new methods (IDR(s) and GPBiCGstab(L)) for computing the electromagnetic diffraction of objects larger than the wavelength. It is found that IDR(s) can reduce computation time but may not converge in some cases, while GPBiCGstab(L) always converges and also reduces computation time compared to QMR, GPBiCG, and BiCGstab.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Antigoni Kleanthous, Anthony J. Baran, Timo Betcke, David P. Hewett, Christopher D. Westbrook
Summary: To improve weather and climate models, it is important to accurately calculate the single-scattering properties of randomly oriented complex atmospheric ice crystals. This study applies Boundary Element Method (BEM) to calculate these properties in the microwave and sub-millimeter region of the electromagnetic spectrum for all-sky data assimilation. The results show that BEM can accurately compute the scattering properties of complex ice aggregates, which is crucial for weather and climate models.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Ben Niu, Yanting Li, Gang Xiong, Jihui Chen, Zhimin Hu, Yunqing Fu, Yaming Zou, Chongyang Chen, Ke Yao
Summary: This study presents both experimental and theoretical analysis of the 4d 2D5/2 -> 2D3/2 magnetic dipole transition in Rb-like ions. The correlation between the theoretical and experimental findings is observed, and it is illustrated that the contribution of the core-valence correlation is pivotal for the fine structure splittings.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
James A. Lock, Gunther P. Konnen, Philip Laven
Summary: Researchers have derived an analytical generalization of Airy theory that provides a more accurate approximation for the primary rainbow, but still has limitations for the second-order rainbow and beyond.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Shixiong Wu, Xuebang Gao, Xuqiang Dou, Li Xie
Summary: In this paper, an indoor experimental study was conducted to investigate the optical attenuation caused by sand/dust storms at different relative humidity levels. It was found that the hygroscopic growth of sand/dust particles has a significant effect on optical attenuation when the relative humidity is above 60%. Based on the double-parameter Kasten model, a proposed optical attenuation model takes into account visibility, particle size, relative humidity, and optical wavelength. Numerical calculations considering the hygroscopicity effect were also performed, and the results were in agreement with the experimental data.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Zhimin Yang, Jaeman Song, Bong Jae Lee
Summary: In this study, we analyze TPX cells operating in the self-sustaining circuit and examine the effects of different bandgaps on their performance. The results show that the bandgap energy of the LED must exceed that of the PV cell for the TPX cell to function in a self-sustaining parallel circuit. Additionally, a narrower bandgap energy for the PV cell and a wider bandgap energy for the LED can improve the performance of the TPX cell in the self-sustaining circuit.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)