Photonics and Nanostructures-Fundamentals and Applications最新文献_第9页

Mid-IR supercontinuum generation in a silicon nitride loaded lithium niobate on sapphire waveguide 在蓝宝石波导上的氮化硅负载铌酸锂中产生中红外超连续真空

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-05-09 DOI: 10.1016/j.photonics.2024.101274

Kokou Firmin Fiaboe , Marina Raevskaia , Marko Perestjuk , Alberto Della-Torre , Thach Nguyen , Arnan Mitchell , Christelle Monat , Christian Grillet

{"title":"Mid-IR supercontinuum generation in a silicon nitride loaded lithium niobate on sapphire waveguide","authors":"Kokou Firmin Fiaboe , Marina Raevskaia , Marko Perestjuk , Alberto Della-Torre , Thach Nguyen , Arnan Mitchell , Christelle Monat , Christian Grillet","doi":"10.1016/j.photonics.2024.101274","DOIUrl":"https://doi.org/10.1016/j.photonics.2024.101274","url":null,"abstract":"<div><p>In spectroscopy, having access to a wide range of wavelengths within the mid-infrared region is crucial for conducting thorough and versatile analyses. In our research, we successfully demonstrate numerically the generation of supercontinuum within a waveguide made of silicon nitride loaded onto lithium niobate on a sapphire substrate, with a specific focus on the mid-infrared wavelength range. By implementing effective lateral leakage and dispersion engineering techniques, we have significantly broadened our system’s spectral range, covering wavelengths from the near-infrared (near-IR) to the mid-infrared (mid-IR) regions. Our results indicate that when a silicon nitride-loaded lithium niobate waveguide is excited with a commercially available femtosecond fiber laser pump at 2070 nm, it has the capability to produce a supercontinuum that spans more than one octave within the mid-infrared wavelength range.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"60 ","pages":"Article 101274"},"PeriodicalIF":2.7,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140910219","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

A semianalytically synthesized ultrathin photolithographic metagrating for sub-THz beam splitting 用于亚千赫光束分束的半解析合成超薄光刻元镜

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-05-07 DOI: 10.1016/j.photonics.2024.101276

M.A. Tumashov , Y. Yashno , S.A. Kuznetsov , P.A. Lazorskiy , A. Epstein , S.B. Glybovski

引用次数: 0

Two-peak envelope spectrum of a subwavelength grating microring resonator for wide-range and high-sensitivity refractive index sensing 用于大范围高灵敏度折射率传感的亚波长光栅微光谐振器的双峰包络谱

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-04-29 DOI: 10.1016/j.photonics.2024.101273

Shibo Sun, Meiyu Chang, Mei Kong, Yameng Xu

{"title":"Two-peak envelope spectrum of a subwavelength grating microring resonator for wide-range and high-sensitivity refractive index sensing","authors":"Shibo Sun, Meiyu Chang, Mei Kong, Yameng Xu","doi":"10.1016/j.photonics.2024.101273","DOIUrl":"https://doi.org/10.1016/j.photonics.2024.101273","url":null,"abstract":"<div><p>The detectable range and sensitivity play a key role in the accuracy and range of applications available for lab-on-a-chip sensing systems. Here, we propose and numerically demonstrate an on-chip refractive index sensor simultaneously possessing wide detectable range and high sensitivity through monitoring the two-peak envelope spectrum of a subwavelength grating microring resonator. The principle lies in the combination of the envelope spectrum tracking scheme and the light field releasing in subwavelength grating waveguides. The structure of the subwavelength grating microring resonator is designed to adjust the wavelength dependence of its critical coupling condition, so that the two-peak envelope spectrum can be formed and centered at critically coupled wavelengths. By probing the drift of the two-peak envelope spectrum within the C+L band (1530–1625 nm), we lift the free spectral range constraint on the detectable range and broaden it up to 0.46 RIU. Meanwhile, a sensitivity of 444 nm/RIU is achieved. This investigation provides an attractive candidate for high performance integrated sensors, and thus may pave the way for lab-on-chip sensing, especially in application scenarios demanding both wide detectable range and high sensitivity.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"60 ","pages":"Article 101273"},"PeriodicalIF":2.7,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140842670","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

Application of circuit model for gap-plasmon nanodisk resonators 间隙-等离子体纳米盘谐振器电路模型的应用

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-04-26 DOI: 10.1016/j.photonics.2024.101264

M. Dareini , S.R. Ghorbani , H. Arabi , S. Daqiqeh Rezaei

引用次数: 0

Wavelength splitting in coupled dissimilar disk resonators with nanoscatterers 带有纳米散射体的耦合异质盘谐振器中的波长分裂

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-04-17 DOI: 10.1016/j.photonics.2024.101263

Varun S.V., Shadak Aee K.

引用次数: 0

Experimental study on ultra-high sensitivity gold-based SPR sensor for refractive index and temperature measurement 用于测量折射率和温度的超高灵敏度金基 SPR 传感器的实验研究

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-04-17 DOI: 10.1016/j.photonics.2024.101262

Kaifeng Li , Zhiyong Yin , Shuguang Li, Xili Jing

{"title":"Experimental study on ultra-high sensitivity gold-based SPR sensor for refractive index and temperature measurement","authors":"Kaifeng Li , Zhiyong Yin , Shuguang Li, Xili Jing","doi":"10.1016/j.photonics.2024.101262","DOIUrl":"10.1016/j.photonics.2024.101262","url":null,"abstract":"<div><p>We have experimentally demonstrated an ultra-high sensitivity gold-based fiber refractive index (RI) sensor whose main structure is composed of multimode fiber (MMF) and photonic crystal fiber (PCF). The gold film is deposited on V-shaped PCF by magnetron sputtering, and sensing experiments are performed based on the principle of surface plasmon resonance (SPR). Numerical simulation results indicate that the cladding mode of the V-shaped PCF is more capable of stimulating the SPR effect than the core mode. The experimental results show that the RI measurement range of the sensor is 1.333–1.421, with a maximum sensitivity of 10015 nm/RIU. In addition to RI sensing, sensing probes can be coated with polydimethylsiloxane (PDMS) on a gold film for temperature sensing. For temperature detection, the range is from 10 to 100 °C and the maximum sensitivity is 3.5 nm/℃. Besides high sensitivity in RI measurement, the proposed sensor also has good sensing performance in temperature sensing. With the advantages of high sensitivity, good stability, and easy preparation, this sensor has become an important reference in the field of high-performance sensing.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"60 ","pages":"Article 101262"},"PeriodicalIF":2.7,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140755936","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

Vertical coupling to photonic crystal waveguide using chiral plasmonic lenses 利用手性等离子透镜实现与光子晶体波导的垂直耦合

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-04-09 DOI: 10.1016/j.photonics.2024.101261

Kaizhu Liu , Yuxiang Yang , Xue Han , Changsen Sun , Chengchao He , Yanhong Li , Hsiang-Chen Chui

{"title":"Vertical coupling to photonic crystal waveguide using chiral plasmonic lenses","authors":"Kaizhu Liu , Yuxiang Yang , Xue Han , Changsen Sun , Chengchao He , Yanhong Li , Hsiang-Chen Chui","doi":"10.1016/j.photonics.2024.101261","DOIUrl":"https://doi.org/10.1016/j.photonics.2024.101261","url":null,"abstract":"<div><p>Manipulating surface plasmon polariton waves for the development of micro-nano devices has been widely studied in recent years. Two-dimensional artificial photonic crystals have bandstructure characteristics like semiconductors. However, the requirement for light to be incident along the structural periodic direction poses a challenge in coupling light into the photonic crystal, thereby impeding its integrations and applications. In this work, we proposed coupling vertically incident left-circularly polarized light into a photonic crystal waveguide using a chiral plasmonic lens. Linearly-polarized light can also generate surface plasmon polariton waves and couple them into photonic crystal waveguides, but the intensity is lower. In contrast, right-circularly polarized light propagates in the opposite direction and exhibits minimal propagation into the photonic crystal waveguide. The results indicate that the proposed structure can operate broadband within the wavelength range of 620–670 nm. This method provides a simple and easily integrated coupling method for photonic crystal devices.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"59 ","pages":"Article 101261"},"PeriodicalIF":2.7,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140539207","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

Inverse design of incommensurate one-dimensional porous silicon photonic crystals using 2D-convolutional mixture density neural networks 利用二维卷积混合密度神经网络反向设计不相容的一维多孔硅光子晶体

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-04-08 DOI: 10.1016/j.photonics.2024.101260

Ivan Alonso Lujan-Cabrera, Cesar Isaza, Ely Karina Anaya-Rivera, Cristian Felipe Ramirez-Gutierrez

{"title":"Inverse design of incommensurate one-dimensional porous silicon photonic crystals using 2D-convolutional mixture density neural networks","authors":"Ivan Alonso Lujan-Cabrera, Cesar Isaza, Ely Karina Anaya-Rivera, Cristian Felipe Ramirez-Gutierrez","doi":"10.1016/j.photonics.2024.101260","DOIUrl":"https://doi.org/10.1016/j.photonics.2024.101260","url":null,"abstract":"<div><p>This work proposes an inverse design tool for porous silicon photonic structures. This tool is based on 2D-convolutional mixture density neural networks given that this type of architecture allows to tackle the nonuniqueness problem present in the optical response of photonic crystals. Moreover, a preprocessing reshaping method was implemented to use 2D-convolution neural networks due to their powerful ability in pattern recognition. A data set of porous silicon photonic spectra was generated. The photonic structures consist of 12 assembled layers of different thicknesses and porosities, generating incommensurate one-dimensional photonic crystals. The model was tested with four test data sets. First, a periodic validation was carried out, showing that incommensurate structures can generate well-defined photonic bandgaps. The second test set found that incommensurate photonic structures can resemble the optical response of a modulated photonic crystal and retrieve defective modes within the bandgap. The third test data set consisted of ideal distributed Bragg reflectors. It was found that the neural network could not predict accurate design due to the notorious differences in the optical properties of the two structures. Last, the neural network was tested with the experimental spectrum of a porous silicon photonic crystal, and it was shown that the predictions made were inaccurate because the simulations did not consider critical experimental aspects.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"59 ","pages":"Article 101260"},"PeriodicalIF":2.7,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140539208","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

Mobility and conductivity of laser-generated e-h plasmas in direct-gap nanowires 直接隙纳米线中激光产生的电子-氢等离子体的迁移率和导电性

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-04-07 DOI: 10.1016/j.photonics.2024.101259

Jeremy R. Gulley, Rachel Cooper, Ethan Winchester

{"title":"Mobility and conductivity of laser-generated e-h plasmas in direct-gap nanowires","authors":"Jeremy R. Gulley, Rachel Cooper, Ethan Winchester","doi":"10.1016/j.photonics.2024.101259","DOIUrl":"https://doi.org/10.1016/j.photonics.2024.101259","url":null,"abstract":"<div><p>This article examines the role of field strength, frequency, and many-body scattering during the ultrafast optoelectronic response in a direct-gap semiconductor nanowire using numerical simulation. Following resonant laser excitation, an AC or bias DC field perturbs the 1D <em>e-h</em> plasma as it relaxes by carrier-phonon and Coulomb scattering. For bias DC fields, the laser-excited carrier distributions evolve to a static non-equilibrium from which a stable DC mobility is calculated. Carrier-phonon collisions contain the <em>e-h</em> carriers near energy minima for fields of 0.5 kV/cm or less, while the Coulomb collisions redistribute some electrons across the Brillouin zone where they drift into other band structure energy minima and are there contained by phonon scattering. This behavior results in carrier mobilities with a field-strength dependence specific to a 1D solid. For AC probe fields, the analyze the resulting frequency-dependent conductivity for frequencies between the plasmon frequency and interband resonance. In all cases, we compare results to standard-conductivity models by calculating distribution-averaged collision rates and times, and show how, unlike in the bulk, these quantities for the nanowire are strongly dependent on both field magnitude and frequency.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"59 ","pages":"Article 101259"},"PeriodicalIF":2.7,"publicationDate":"2024-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140554393","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

Single nanoparticle detection based on a slotted nanobeam cavity 基于开槽纳米束腔的单纳米粒子探测

IF 2.7 3区物理与天体物理

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2024-03-26 DOI: 10.1016/j.photonics.2024.101258

Mohannad Al-Hmoud

{"title":"Single nanoparticle detection based on a slotted nanobeam cavity","authors":"Mohannad Al-Hmoud","doi":"10.1016/j.photonics.2024.101258","DOIUrl":"https://doi.org/10.1016/j.photonics.2024.101258","url":null,"abstract":"<div><p>In this work, a single nanoparticle sensor based on a slot-bridge-slot photonic crystal nanobeam cavity is presented. To investigate the sensor feasibility of a single particle detection, the shift of the resonance wavelength of the cavity mode is calculated by employing perturbation theory and the simulation results of the mode profile. A mode volume of <span><math><mrow><mn>2.61</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup><msup><mrow><mfenced><mrow><mi>λ</mi><mo>/</mo><mi>n</mi></mrow></mfenced></mrow><mrow><mn>3</mn></mrow></msup></mrow></math></span>is realized, which is reduced by a factor of <span><math><mn>150</mn></math></span> times in comparison with nanobeam cavity. We demonstrate the detection of streptavidin molecules with radius ∼ 2.65 nm with a large resonant wavelength shift (25.4 pm). This represents the largest wavelength shift ever reported in single nanoparticle sensors. Owing to the ultracompact footprint and high sensitivity demonstrated here, the proposed structure holds great potential for lab-on-a-chip biosensing applications.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"59 ","pages":"Article 101258"},"PeriodicalIF":2.7,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140344111","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