Applied Physics B最新文献_第10页

Frequency stabilization and referencing of a mid-infrared dual-comb spectrometer 中红外双梳光谱仪的频率稳定与参考

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2026-02-13 DOI: 10.1007/s00340-026-08634-z

Chu C. Teng, Yifeng Chen, Jie Liu, Jonas Westberg, Gerard Wysocki

{"title":"Frequency stabilization and referencing of a mid-infrared dual-comb spectrometer","authors":"Chu C. Teng, Yifeng Chen, Jie Liu, Jonas Westberg, Gerard Wysocki","doi":"10.1007/s00340-026-08634-z","DOIUrl":"10.1007/s00340-026-08634-z","url":null,"abstract":"<div>\u0000 \u0000 The compact footprint of all solid-state quantum cascade laser frequency combs (QCL-FCs) allows field-compatible applications of dual-comb spectrometers (DCS) such as continuous atmospheric multi-species monitoring, for which long-term frequency stability is critical. We show that by incorporating a stabilized single-mode quantum cascade laser as a frequency reference into one channel of a conventional QCL-DCS system, the combs can be actively stabilized to a molecular transition, which significantly reduces the uncertainties in the DCS frequency axis compared to a free-running system. With the stabilized DCS, the QCL-FCs’ offset frequencies are locked to the reference laser to within 0.3 MHz and the frequency instability for each comb line is estimated to be < 1 MHz for each 100 µs long spectral acquisitions with white noise limited averaging trend for up to 600 s. Additionally, we show that the comb’s optical frequencies can be inferred accurately during the multiheterodyne signal acquisition, as demonstrated through absorption DCS of N2O at low pressure. \u0000 </div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-026-08634-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Self-focusing of higher-order circular cosine-hyperbolic Gaussian beams in plasma under an extended paraxial framework 高阶圆弧余弦双曲高斯光束在扩展近轴框架下的等离子体自聚焦

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2026-02-13 DOI: 10.1007/s00340-026-08628-x

V. S. Pawar, P. P. Nikam, V. V. Ganbavle, S. L. Dhere, S. D. Patil, S. R. Kokare, M. V. Takale

{"title":"Self-focusing of higher-order circular cosine-hyperbolic Gaussian beams in plasma under an extended paraxial framework","authors":"V. S. Pawar, P. P. Nikam, V. V. Ganbavle, S. L. Dhere, S. D. Patil, S. R. Kokare, M. V. Takale","doi":"10.1007/s00340-026-08628-x","DOIUrl":"10.1007/s00340-026-08628-x","url":null,"abstract":"<div>In this manuscript, we present a theoretical investigation of the self-focusing propagation of higher-order circular cosine-hyperbolic-Gaussian beams (CiChGB) in non-relativistic collisionless plasma under the higher-order paraxial approach. The analysis employs the framework of the Wentzel–Kramers–Brillouin approximation (WKB) and supplemented by the higher-order paraxial contribution of the spatial intensity distribution. The study examines the influence of the beam order components of the cosine-hyperbolic function and decentered parameter on the intensity distribution of the CiChGB. The attention is given to the impact of the beam order on the self-focusing propagation of the CiChGB and the higher-order contributions to the local dielectric constant of collisionless plasma. It is observed that, at higher decentered parameter of the beam profile, the higher-order coefficients of dielectric constant of the collisionless plasma are significantly suppressed. This theoretical framework provides insights into the self-focusing propagation of higher-order CiChGB in the plasma environments.</div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-026-08628-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

The simulation and analysis of the 1550 nm InGaAsP/InP electro-absorption modulator 1550 nm InGaAsP/InP电吸收调制器的仿真与分析

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2026-02-10 DOI: 10.1007/s00340-026-08631-2

Cheng Sun, Tao Lin, Cailin Wang, Xinrui Cao

{"title":"The simulation and analysis of the 1550 nm InGaAsP/InP electro-absorption modulator","authors":"Cheng Sun, Tao Lin, Cailin Wang, Xinrui Cao","doi":"10.1007/s00340-026-08631-2","DOIUrl":"10.1007/s00340-026-08631-2","url":null,"abstract":"<div>\u0000 \u0000 The 1550 nm InGaAsP/InP electro-absorption modulator (EAM) is one of the key components for the data communication applications. To enhance the comprehensive performance of EAM, the continuous iterative optimization is required in both the theoretical mechanisms and the fabrication processes. This paper analyzed the physical mechanisms of EAM by calculating the normalized overlap integral between the electron and the hole energy levels, which yielded the red shift and the absorption intensity of the absorption band under the reverse bias. By analyzing the absorption spectra of the wavelength and the reverse bias, the transmission loss and the extinction ratio at different wavelengths were determined. By optimizing the key parameters such as the barrier composition, the barrier width, the quantum well width, and the number of quantum wells, the extinction ratio of the EAM was improved. The introduction of the P-doped InGaAsP layer into the P-doped waveguide mitigated the electric-field peak at the interface between the P-doped cladding and the P-doped waveguide, thereby further enhancing the modulation efficiency. This study systematically simulated and analyzed the key parameters of the design for the 1550 nm InGaAsP/InP EAM, providing the theoretical reference value for achieving the high-performance EAM.\u0000 </div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-026-08631-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Correction: design, fabrication, and characterization of dual-wavelength inhibited-coupling guiding hollow-core fibers 修正：双波长抑制耦合导向空心芯光纤的设计、制造和表征

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2026-02-10 DOI: 10.1007/s00340-026-08626-z

Bowen Chen, Tim Kühlthau, Götz Kleem, Thomas Graf, Marwan Abdou Ahmed

引用次数: 0

Investigation of the dynamics of a versatile laser amplifier upon fast modulation of its CW and pulsed seed sources 多用途激光放大器在快速调制连续波和脉冲种子源时的动力学研究

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2026-02-05 DOI: 10.1007/s00340-026-08632-1

Christian Schmittner, Colin Reiff, Max Hoßfeld, Thomas Graf, Marwan Abdou Ahmed

{"title":"Investigation of the dynamics of a versatile laser amplifier upon fast modulation of its CW and pulsed seed sources","authors":"Christian Schmittner, Colin Reiff, Max Hoßfeld, Thomas Graf, Marwan Abdou Ahmed","doi":"10.1007/s00340-026-08632-1","DOIUrl":"10.1007/s00340-026-08632-1","url":null,"abstract":"<div>This paper presents an investigation of the dynamics of a versatile thin-disk multipass laser amplifier (TDMPA) with two seed sources. The study focused on the system’s transient response, analyzing the amplified instantaneous power during and shortly after fast modulation of the individual seed powers. For switching times shorter than the amplifier’s characteristic response time, changes in the total seed power led to retardation and overshooting effects, which are attributed to the gain-saturation dynamics of the active laser medium. An analytical formula to express the dependence of the characteristic response time on the input and output powers and the specific TDMPA architecture was derived and validated. This provides a practical guideline for choosing seed-power switching times that avoid transient overshooting and retardation effects. For pump powers between 599 and 1446 W, and depending on operation conditions, the TDMPA under consideration was measured to exhibit a gain-saturation response time ranging between approximately 30 and 90 µs.</div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-026-08632-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

22.31 mJ output energy of dual-crystal Tm:YAP laser at 1 kHz repetition rate 22.31 mJ双晶Tm:YAP激光器在1khz重复频率下的输出能量

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2026-01-31 DOI: 10.1007/s00340-026-08625-0

Xiangyun Gao, Zhenxing He, Ting Yu, Bo Dai

引用次数: 0

Doped VO2 based smart window with high-performance infrared regulation for radiative cooling 基于掺杂VO2的高性能红外调节辐射冷却智能窗口

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2026-01-30 DOI: 10.1007/s00340-025-08620-x

Guowei Liu, Chenlong Li, Chengyou Lin

{"title":"Doped VO2 based smart window with high-performance infrared regulation for radiative cooling","authors":"Guowei Liu, Chenlong Li, Chengyou Lin","doi":"10.1007/s00340-025-08620-x","DOIUrl":"10.1007/s00340-025-08620-x","url":null,"abstract":"<div>\u0000 \u0000 This paper proposes and designs a dynamic radiative cooling smart window based on a metal-dielectric multilayer structure. An improved genetic algorithm is employed to optimize the number of layers, their thickness, and material type to achieve different target visible transmittance levels (from 30 to 60%). The optimal structure identified is a 10-layer stack of VO2 and BaF2 on a 1-μm-thick BaF2 substrate, achieving an average visible transmittance of 50%. This design provides significant spectral control capabilities. Below its phase-transition temperature, the window is in an insulating state with a high near-infrared (NIR, 0.78–2.5 μm) transmittance of 80.8% and a low mid-infrared (MIR, 8–13 μm) emissivity of 6.7%, facilitating passive solar heating. Above the phase-transition temperature, it switches to a metallic state with a low NIR transmittance of 10.6% and a high MIR emissivity of 88.3%, enabling effective radiative cooling. The window exhibits substantial modulation abilities, with |ΔTNIR| and Δε values of 0.70 and 0.82, respectively. This energy-free, self-adaptive technology, which dynamically regulates thermal radiation in response to ambient temperature, is ideally suited for enhancing energy efficiency in green buildings and smart windows under varying weather conditions.\u0000 </div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-025-08620-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146071333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Gaussian quadrature to solve the wavefront in simultaneous Hartmann/Bi-Ronchi tests with SLM using directional derivative 利用方向导数求解SLM同步Hartmann/Bi-Ronchi测试波前的高斯正交

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2026-01-05 DOI: 10.1007/s00340-025-08611-y

Jesus Arriaga Hernández, Bolivia Cuevas Otahola, Alberto Jaramillo Núñez, Jacobo Oliveros Oliveros, María Morín Castillo

{"title":"Gaussian quadrature to solve the wavefront in simultaneous Hartmann/Bi-Ronchi tests with SLM using directional derivative","authors":"Jesus Arriaga Hernández, Bolivia Cuevas Otahola, Alberto Jaramillo Núñez, Jacobo Oliveros Oliveros, María Morín Castillo","doi":"10.1007/s00340-025-08611-y","DOIUrl":"10.1007/s00340-025-08611-y","url":null,"abstract":"<div>We propose a technique for wavefront (W) sensing of optical systems using both Bi-Ronchi and Hartmann tests, modified by incorporating the classical tests by including a Spatial Light Modulator (SLM). To this aim, we replace the conventional Hartmann screens with structured apertures with a transmission Liquid Crystal Spatial Light Modulator (LC-SLM) using binary patterns of either circular or square apertures. We build overlapping horizontal and vertical fringe patterns to obtain equidistant square apertures (Bi-Ronchi). In the case of the Hartmann test, we substitute the square apertures with circles serving as binary masks, which we refer to as BRM (Bi-Ronchi Mask) and HM (Hartmann mask). We design an experimental setup in which a collimated laser illuminates the SLM, considering the diffractive effects of the SLM to optimize the identification of centroids, which yields transversal aberrations ((bold{TA}({rho},{theta}))). We assume a vector formulation suitable to interpret TA and thus directly solve (bold{W}({rho }, {theta})) by two-dimensional numerical integration applying directional derivative and Gaussian quadrature. We perform this process for both the Hartmann and Bi-Ronchi tests simultaneously, leveraging the spatial resolution and flexibility of the SLM. We present and discuss our results and compare them with those obtained using dedicated wavefront sensing software using the Ronchi test (under the conditions of our proposal) with the SLM.</div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-025-08611-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Terahertz generation from chirped and delayed laser pulses in a periodically poled lithium niobate waveguide 周期性极化铌酸锂波导中啁啾和延迟激光脉冲的太赫兹产生

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2026-01-05 DOI: 10.1007/s00340-025-08616-7

Ilyes Betka, Moise Deroh, Simon Dubuis, Gabriel Taton, Frédéric Fauquet, Moses Eshovo Ojo, Coralie Fourcade-Dutin, Hervé Maillotte, Vincent Rodriguez, Mathieu Chauvet, Patrick Mounaix, Damien Bigourd

{"title":"Terahertz generation from chirped and delayed laser pulses in a periodically poled lithium niobate waveguide","authors":"Ilyes Betka, Moise Deroh, Simon Dubuis, Gabriel Taton, Frédéric Fauquet, Moses Eshovo Ojo, Coralie Fourcade-Dutin, Hervé Maillotte, Vincent Rodriguez, Mathieu Chauvet, Patrick Mounaix, Damien Bigourd","doi":"10.1007/s00340-025-08616-7","DOIUrl":"10.1007/s00340-025-08616-7","url":null,"abstract":"<div>\u0000 \u0000 THz generation from chirped and delayed laser pulses using periodically poled lithium niobate (PPLN) traditionally requires high-energy sources and bulky PPLN crystals. However, for compact, integrated, and miniaturized THz-based applications, such systems must be downsized. In this work, we numerically and experimentally demonstrate THz generation in a PPLN waveguide with a cross-section of 500 × 500 µm2, pumped with low pulse energies in the microjoule range at a wavelength of 1 µm. Simulations show that tightly focused optical pulses in this configuration achieve significantly higher THz generation efficiency compared to collimated pumping. For a propagation length of 1.6 cm, optimal parameters are identified as a pulse duration of 5 ps and a pump energy between 0.5 and 1 µJ. Experimental validation confirms these findings, yielding a narrowband THz spectrum centered around 488 GHz. This work opens new perspectives for the development of efficient, integrated THz sources for advanced applications in THz photonics, spectroscopy, and high-speed communications.\u0000 </div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Temporally resolved properties of femtosecond laser-induced plasmas in air 飞秒激光诱导等离子体在空气中的时间分辨特性

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2026-01-05 DOI: 10.1007/s00340-025-08606-9

Gerardo Urdaneta Rincon, Junhwi Bak, Sagar Pokharel, Albina Tropina, Richard Miles, Arthur Dogariu

{"title":"Temporally resolved properties of femtosecond laser-induced plasmas in air","authors":"Gerardo Urdaneta Rincon, Junhwi Bak, Sagar Pokharel, Albina Tropina, Richard Miles, Arthur Dogariu","doi":"10.1007/s00340-025-08606-9","DOIUrl":"10.1007/s00340-025-08606-9","url":null,"abstract":"<div>We present the temporally resolved measurements of electron number density and temperature over timescales on the order of 1 ns to 10 ns in a femtosecond (fs) laser-induced plasma (LIP). Additionally, we also report on the neutral gas number density and rotational temperature over timescales on the order of 1 ns to 1000 ns. The fs LIP was generated in ambient air and investigated using laser Thomson and rotational Raman scattering. Electron number densities were observed to decrease from (sim 4times 10^{21}) (hbox {m}^{-3}) at early times to (sim 7times 10^{20}) (hbox {m}^{-3}) at later times, while the electron temperature remained within (0.5-1) eV throughout the probed range. The neutral gas number density remained nearly constant at (sim 2times 10^{25}) (hbox {m}^{-3}) for the first 50 ns before declining to (sim 1.1times 10^{25}) (hbox {m}^{-3}) after 500 ns. The rotational temperature initially decreased from (sim 700) K within the first 30 ns to (sim 500) K at 100 ns, before rising back to (sim 700) K. Finally, the experimental results were compared with simulations, showing good agreement.</div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-025-08606-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0