{"title":"Galvanometer-scanning transient phase microscopy with balanced detection and arbitrary pump polarization.","authors":"Cameron N Coleal, Randy A Bartels, Jesse W Wilson","doi":"10.1364/josab.582227","DOIUrl":"10.1364/josab.582227","url":null,"abstract":"<p><p>Transient absorption microscopy measures excited-state kinetics based on the imaginary part of the pump-induced perturbation to the complex refractive index, i.e. <math><mrow><mi>ℑ</mi> <mrow><mo>{</mo> <mrow><mtext>Δ</mtext> <mi>𝒩</mi></mrow> <mo>}</mo></mrow> </mrow> </math> , with applications in both materials and biomedical sciences. Its complement, transient phase microscopy, enabled by stable inline birefringent interferometry, measures the real part <math><mrow><mi>ℜ</mi> <mrow><mo>{</mo> <mrow><mtext>Δ</mtext> <mi>𝒩</mi></mrow> <mo>}</mo></mrow> </mrow> </math> . The ability to switch between absorption and phase measurements may yield a stronger signal, depending on the sample and probe wavelength. To date, however, transient phase has not been coupled with galvanometer scanners, thus limiting it to materials science applications and non-imaging spectroscopy. Here, we extend transient phase microscopy to operate in a galvanometer-scanning microscope with balanced detection, comparing amplitude and phase measurements in graphene (in which amplitude detection has the advantage), hemoglobin and red blood cells (in which phase detection has the advantage). We examine the impacts and limitations introduced by galvanometer scanning, in addition to relocation of the pump-probe combining dichroic to permit arbitrary polarization of the pump.</p>","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"43 4","pages":"714-723"},"PeriodicalIF":1.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13229546/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148157099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Terahertz metasurface sensor by utilizing electromagnetically induced transparency","authors":"Yuanji Cai, JianRui Li, Shu-ping Zhang, Fenglei GUO","doi":"10.1364/josab.585331","DOIUrl":"https://doi.org/10.1364/josab.585331","url":null,"abstract":"We present a water-shaped terahertz metasurface sensor based on the electromagnetically induced transparency (EIT) effect. The EIT resonance is generated by electromagnetic coupling between a double split ring and a rod-shaped structure to enhance sensitivity. The multipole decomposition is used to explain that the EIT resonance is dominated by electric dipoles (bright–dark mode coupling at 2.482 THz). Simulation results show that its sensitivity ( S ) to refractive index changes reaches 590 GHz/RIU. The experimental test shows that the limit of sensing detection for tartaric acid is 1 mg/ml, demonstrating its potential for application in drug residue monitoring and food safety testing.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"43 2","pages":"312-312"},"PeriodicalIF":0.0,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147890402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Quantitative analysis of CeO <sub>2</sub> -associated mineral composites based on terahertz time-domain spectroscopy technology","authors":"Tong Zhang, Zhiyuan Zheng, Mingrui Zhang, Chutong Gao, Shanshan Li, Haochong Huang, Qi–Ming Qiu, Zili Zhang, Kun‐Feng Qiu","doi":"10.1364/josab.575650","DOIUrl":"https://doi.org/10.1364/josab.575650","url":null,"abstract":"The complex and highly variable mineralogical assemblages in rare earth deposits pose a significant challenge for accurate compositional analysis. Conventional techniques such as scanning electron microscopy and optical microscopy often lack the precision required for quantitative concentration measurements of constituent minerals. This study employs terahertz time-domain spectroscopy (THz-TDS) to achieve non-destructive, high-precision quantification of mineral concentrations in rare earth systems. The experiments are performed using a THz-TDS system driven by a Ti:sapphire femtosecond laser. Measurements are carried out under a dry atmosphere on mixtures of calcium carbonate (CaCO 3 )–cerium oxide (CeO 2 ) and barium sulfate (BaSO 4 )−CeO 2 . Based on the terahertz wave attenuation characteristics during propagation through a material, a highly linear relationship (R 2 >0.99) is established between the transmitted signal amplitude and the concentration of associated minerals. This differential response originates from the distinct terahertz absorption characteristics of CeO 2 relative to the associated minerals, enabling rapid and accurate concentration determination. Comparative analysis with X-ray diffraction (XRD) Rietveld refinement demonstrates the superior performance of THz-TDS (R 2 =0.97 for CaCO 3 , 0.98 for BaSO 4 ), whereas XRD results exhibit lower correlation (R 2 =0.90 for CaCO 3 , 0.97 for BaSO 4 ), attributable to inherent limitations such as preferred orientation effects and microstructure-dependent intensity variations. This study establishes a robust, non-destructive analytical method for quantifying mineral compositions in heterogeneous rare earth ores, with significant implications for ore genesis studies, mineral processing optimization, and efficient resource utilization.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"42 12","pages":"2842-2842"},"PeriodicalIF":0.0,"publicationDate":"2025-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Hong–Ou–Mandel interferometry with cavity QED-based single-photon sources: a quantum jump analysis","authors":"Alexia Dudones, Charles McCollum, Imran M. Mirza","doi":"10.1364/josab.572714","DOIUrl":"https://doi.org/10.1364/josab.572714","url":null,"abstract":"We present a quantum jump/trajectory analysis of the two-photon interference phenomenon in the context of the Hong–Ou–Mandel (HOM) effect. In particular, we consider the standard setup of the HOM effect, which consists of two-photon sources firing single photons from opposite sides of a 50/50 beam splitter and two perfect detectors placed at the output ports to record photodetection events. For single-photon sources, we consider two special cases: (1) two excited two-level atoms and (2) two atom–cavity setups with initially present single photons in both cavities. For both cases, we report analytic results as well as quantum jump-based Monte Carlo simulations to demonstrate the signatures of these single-photon sources on the HOM effect under different working conditions (e.g., strong- and weak-coupling regimes of cavity quantum electrodynamics). The HOM effect offers applications in the areas of linear optics quantum computing, as well as in protocols that test the indistinguishability of single-photon sources.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"42 12","pages":"2761-2761"},"PeriodicalIF":0.0,"publicationDate":"2025-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147382188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Band gap engineering and controlling transport properties of single photons in periodic and disordered Jaynes–Cummings arrays","authors":"Tiberius Berndsen, Nishan Amgain, Imran M. Mirza","doi":"10.1364/josab.520000","DOIUrl":"https://doi.org/10.1364/josab.520000","url":null,"abstract":"We theoretically study the single-photon transport properties in periodic and position-disordered Jaynes–Cummings (or JC) arrays of waveguide-coupled microtoroidal ring resonators, each interacting with a single two-level quantum emitter. Employing the real-space formalism of quantum optics, we focus on various parameter regimes of cavity quantum electrodynamics (cQED) to gain better control of single-photon propagation in such a many-body quantum optical setting. As for some of the key findings, we observe that the periodic setting leads to the formation of the band structure in the photon transmission spectra, which is most evident in the strong coupling regime of cQED. However, under resonant conditions with no losses, the application of Bloch’s theorem indicates that the width of forbidden gaps can be altered by tuning the emitter-cavity coupling to small values. Moreover, in the disordered case, we find that the single-photon transmission curves show the disappearance of band formation. However, spectral features originating from cQED interactions observed for the single atom-cavity problem remain robust against weak-disordered conditions. The results of this work may find application in the study of quantum many-body effects in the optical domain as well as in different areas of quantum computation and quantum networking.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"41 8","pages":"C9-C9"},"PeriodicalIF":0.0,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://arxiv.org/pdf/2401.15231","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147895664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cascaded sum frequency generation of ultraviolet laser source at 228 nm based on stimulated Raman adiabatic passage","authors":"yintong jin, zhen chen, jialiang zhang, Changshui Chen","doi":"10.1364/josab.506363","DOIUrl":"https://doi.org/10.1364/josab.506363","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"10 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134957303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ling Tian-Sheng, yuting Zhang, Yulai She, Hao Du, Huajun Lai, Yi Xu
{"title":"Surface plasmon resonance sensor based on a D-shaped hollow microstructured fiber with bimetallic film","authors":"Ling Tian-Sheng, yuting Zhang, Yulai She, Hao Du, Huajun Lai, Yi Xu","doi":"10.1364/josab.495194","DOIUrl":"https://doi.org/10.1364/josab.495194","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"11 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134957456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Arif Laskar, Pratik Adhikary, Niharika Singh, Saikat Ghosh
{"title":"Coherence as an indicator to discern electromagnetically induced transparency and Autler-Townes splitting","authors":"Arif Laskar, Pratik Adhikary, Niharika Singh, Saikat Ghosh","doi":"10.1364/josab.505262","DOIUrl":"https://doi.org/10.1364/josab.505262","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"11 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134957458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Machine learning for self-tuning mode-locked lasers with multiple transmission filters","authors":"Mahmut Bagci, J. Kutz","doi":"10.1364/josab.505672","DOIUrl":"https://doi.org/10.1364/josab.505672","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"11 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134957454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"ZnO Nanorod and rGO based nanocomposite decorated with Au nanoparticles for enhanced UV photodetection","authors":"Deepjyoti Chetry, Pritymala Basumatary, Karen Das, Priyanka Kakoty","doi":"10.1364/josab.504063","DOIUrl":"https://doi.org/10.1364/josab.504063","url":null,"abstract":"A comprehensive analysis of a hydrothermally prepared Au nanoparticle decorated nanocomposite of reduced graphene oxide (rGO) and a ZnO nanorod (NR) for possible use as a UV photodetector is presented. The effect of rGO loading in ZnO and incorporation of Au decoration in the best combination of rGO/ZnO for possible enhancement of a photocatalytic effect are experimented. X-ray diffraction, scanning electron microscopy, energy diffraction, and UV-Vis spectroscopy are done for morphological, structural, and optical attribute analysis of the prepared materials. An increase in photocurrent is seen from 2.19 nA to 6.14 mA in dark and UV environments (370 nm) at 5 V bias voltage for the Au decorated nanocomposite, which is found to be better among the experimented composites. The responsivity and detectivity of the Au decorated nanocomposite are analyzed with the increase in incident UV light intensities. The findings are analyzed, and an explanation of the detailed UV photodetection mechanism is outlined in this paper.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"3 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134993613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}