IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-04-15 DOI: 10.1016/j.ijleo.2025.172362

Faisal Munir , Iqbal Hussain , Muhammad Usman , Usman Javed , Muhammad Kashif Majeed , Faisal Nadeem , Muhammad Qasim Khan , Huanrong Fan , Yanpeng Zhang

{"title":"Competition between natural non-Hermitian linear and circular polarization dressing in ion-doped microcrystals Eu3 +: NaYF4 and Eu3+: BiPO4","authors":"Faisal Munir , Iqbal Hussain , Muhammad Usman , Usman Javed , Muhammad Kashif Majeed , Faisal Nadeem , Muhammad Qasim Khan , Huanrong Fan , Yanpeng Zhang","doi":"10.1016/j.ijleo.2025.172362","DOIUrl":"10.1016/j.ijleo.2025.172362","url":null,"abstract":"<div><div>We report the competition relationship between natural non-Hermitian linear and circular polarization dressings in Eu<sup>3+</sup>: BiPO<sub>4</sub> and Eu<sup>3+</sup>: NaYF<sub>4</sub>. We depict that, compare to narrowband excitation (one switch from spectral peak to spectral dip), three dressings lead to the linear or circular polarization signal transition from enhancement peak to suppression dip and to enhancement peak for Eu<sup>3+</sup>: NaYF<sub>4</sub> at broadband excitation due to high decay rate. The linear AT dip is accompanied by two times quantization switches (destructive to constructive, constructive to destructive), while circular AT splitting exhibits one time switch (destructive to constructive quantization) in Eu<sup>3+</sup>: BiPO<sub>4</sub> for narrowband excitation. However, the fluorescence (FL) and multi-Fano of spontaneous four wave mixing (SFWM) shows two circular polarization dressings (two strong dips), which are stronger than linear (one strong dip) at fixing detector. However, the linear and polarization dressing dips are strong due to weak constructive quantization, while strong circular polarization dressing dip comes from destructive quantization at different detectors. Notably, the linear-circular quantization difference results from Zeeman-like effect of CF and selected linear-circular dressing. These results infer a polarizer device that exhibit linear dressing seven times larger than circular dressing at weak quantization output port.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"329 ","pages":"Article 172362"},"PeriodicalIF":3.1,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834405","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

Characterization and nonlinear optical property of Ag-TiO2 nanocomposites fabricated by laser fragmentation in liquid 液态激光碎裂法制备的 Ag-TiO2 纳米复合材料的表征和非线性光学特性

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-04-11 DOI: 10.1016/j.ijleo.2025.172333

Yi-Chen Lee , Chieh-Ming Wu , Pei-Ching Wei , Jen-Feng Hsu , Yu-Chien Lou , Vincent K.S. Hsiao , Ja-Hon Lin , Dong-Sing Wuu

{"title":"Characterization and nonlinear optical property of Ag-TiO2 nanocomposites fabricated by laser fragmentation in liquid","authors":"Yi-Chen Lee , Chieh-Ming Wu , Pei-Ching Wei , Jen-Feng Hsu , Yu-Chien Lou , Vincent K.S. Hsiao , Ja-Hon Lin , Dong-Sing Wuu","doi":"10.1016/j.ijleo.2025.172333","DOIUrl":"10.1016/j.ijleo.2025.172333","url":null,"abstract":"<div><div>This study presents an approach to synthesize Ag-TiO<sub>2</sub> nanocomposites (NCPs) with enhanced nonlinear optical (NLO) properties using laser fragmentation in liquid (LFL). We employed 30 nm Ag nanoparticles (NPs) and 5 nm TiO<sub>2</sub> NPs as precursors, utilizing different concentration ratios in aqueous solution. The LFL technique, using a Nd:YAG laser (532 nm, 15 ns pulse duration), enabled direct preparation of Ag-TiO<sub>2</sub> NCPs. The morphology, structure, and optical properties of the synthesized NCPs were characterized using TEM, XRD, and UV–visible spectroscopy. NLO properties were investigated using the Z-scan technique with a femtosecond Ti:Sapphire laser (800 nm, 129 fs pulse duration). Results revealed enhancement in nonlinear absorption in Ag-TiO<sub>2</sub> NCPs compared to pure Ag NPs. The nonlinear absorption coefficient (β) and nonlinear refractive index (n<sub>2</sub>) were determined experimentally using ZnSe as standard sample. The β value was found to be 1.27 cm/GW. The n<sub>2</sub> and the third-order nonlinear susceptibility (χ<sup>3</sup>) were on the order of 10<sup>−14</sup> esu. We propose that TiO<sub>2</sub> NPs enhance the local electric field of Ag NPs and promote charge transfer, significantly improving the NLO response of the composite material. This study provides new insights into the controlled preparation and performance optimization of Ag-TiO<sub>2</sub> NCPs, offering potential applications in NLO applications.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"330 ","pages":"Article 172333"},"PeriodicalIF":3.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855454","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

Optical double-image cryptosystem based on interference principle and spatial encoding 基于干涉原理和空间编码的光学双象密码系统

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-04-11 DOI: 10.1016/j.ijleo.2025.172344

Hawraa A. Khalf , Emad A. Mohammed

引用次数: 0

Coupled three-color soliton-like pulses with equidistant frequencies at three-wave mixing in a medium with quadratic and cubic susceptibility 在二次和三次磁化率介质中，三波混频下频率相等的耦合三色类孤子脉冲

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-04-11 DOI: 10.1016/j.ijleo.2025.172330

Vyacheslav A. Trofimov , Wang Yan , Dmitry M. Kharitonov , Mikhail V. Fedotov , Di Wang , Changjun Han , Yongqiang Yang

{"title":"Coupled three-color soliton-like pulses with equidistant frequencies at three-wave mixing in a medium with quadratic and cubic susceptibility","authors":"Vyacheslav A. Trofimov , Wang Yan , Dmitry M. Kharitonov , Mikhail V. Fedotov , Di Wang , Changjun Han , Yongqiang Yang","doi":"10.1016/j.ijleo.2025.172330","DOIUrl":"10.1016/j.ijleo.2025.172330","url":null,"abstract":"<div><div>As well-known, a laser pulses’ propagation in the mode of the multi-wave (or multi-color) solitons attracts considerable attention of researchers in connection with various problems of optical frequencies comb interaction with matter and optical communication, for example. Evidently, the developing of new methods for construction of multi-color solitons or soliton-like structures (or self-trapping structures) and finding their possible shapes is actual problem. Below a new approach for construction of such structures at three optical pulses’ interaction in a medium with combined quadratic and cubic nonlinear response with accounting for various processes of the frequency conversion, and degenerate four-wave mixing, self- and cross-modulation is presented. To construct a mode of three coupled laser pulses propagation without (or with little) changing of their shapes it is necessary to set the shape of the summed all pulses’ intensities with single maximum, which may corresponds to “flat” distribution. The shapes of three pulses are defined if the maximal intensities of all pulses are chosen. The phase differences between waves at doubled or tripled and fundamental frequencies should not change during their propagation but each pulse may be chirped. The necessary condition for such stable mode realization is written. Similar the classical soliton of nonlinear Schrödinger equation, the maximal intensity should correspond to pulses’ durations. Their optimal values can be found only by using computer simulation. The pulses with durations close to the optimal values undergo re-shaping. As a result, the required shapes of pulses for achieving a soliton-like mode of their propagation are obtained.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"329 ","pages":"Article 172330"},"PeriodicalIF":3.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845265","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

Enhancing watermarking robustness and invisibility with growth optimizer and improved LU decomposition 利用增长优化器和改进的LU分解增强水印的鲁棒性和不可见性

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-04-10 DOI: 10.1016/j.ijleo.2025.172353

Shuai Jiao, Yunfei Qiu, Qingtang Su, Chongyu Shi, Ziyang Liu

{"title":"Enhancing watermarking robustness and invisibility with growth optimizer and improved LU decomposition","authors":"Shuai Jiao, Yunfei Qiu, Qingtang Su, Chongyu Shi, Ziyang Liu","doi":"10.1016/j.ijleo.2025.172353","DOIUrl":"10.1016/j.ijleo.2025.172353","url":null,"abstract":"<div><div>With the rapid advancement of network technology, the transmission of digital multimedia has accelerated, making copyright protection increasingly critical. To address the challenge of balancing invisibility and robustness in digital watermarking, an enhanced watermarking scheme based on the Growth Optimizer (GO) and improved LU decomposition is proposed in this paper. By utilizing the high-similarity positions of the <em>L</em>-matrix, which align with the maximum value positions of the first column in the original matrix block, the watermark is embedded and extracted directly in the spatial domain, reducing computational complexity. The key contributions of this paper are: (1) The <em>L</em>-matrix block, obtained after using LU decomposition to decompose an image block in the spatial domain, has a higher similarity on the position of the maximum value in the first column of the original pixel block. (2) Innovatively applying the GO to determine the optimal embedding modification and effectively balance invisibility and robustness. (3) Applying the geometric correction to restore the watermarked image affected by geometric attack and to improve resistance. Experimental results show that the proposed method achieves a PSNR above 40 <em>dB</em> and an SSIM above 0.98, ensuring high invisibility while demonstrating superior robustness compared to existing methods. This approach effectively balances invisibility and robustness in digital watermarking.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"329 ","pages":"Article 172353"},"PeriodicalIF":3.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845264","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

Experimental measurement of the near electric emission from LED driver as function of power variation and lighting mode LED驱动器近电发射随功率变化和照明方式变化的实验测量

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-04-10 DOI: 10.1016/j.ijleo.2025.172347

Abdelhakim Zeghoudi , Abdelber Bendaoud , Farid Benhamida , Amar Tilmatine , Laurent Canale , Georges Zissis

{"title":"Experimental measurement of the near electric emission from LED driver as function of power variation and lighting mode","authors":"Abdelhakim Zeghoudi , Abdelber Bendaoud , Farid Benhamida , Amar Tilmatine , Laurent Canale , Georges Zissis","doi":"10.1016/j.ijleo.2025.172347","DOIUrl":"10.1016/j.ijleo.2025.172347","url":null,"abstract":"<div><div>The production of static converters faces a major challenge known as electromagnetic interference (EMI), which can pose significant problems. Among the various sources of electromagnetic pollution, AC/DC energy conversions in LED lamps play an important role. This pollution is conducted through electrical cables and radiated into the air in the form of propagating electromagnetic fields. It is therefore essential to mitigate electromagnetic interference in LED lamp production to reduce the negative impact of electromagnetic pollution and ensure better electromagnetic compatibility across different systems. The objective of this paper is to examine how power variability and lighting modes influence the performance of LED spot lamps on the electric field measured by a TEKBOX electric probe, capturing the three components (<em>E</em>, <em>E</em>, <em>E</em>) in the spectrum domain using the near-field scanning (NFS) technique. The scanning step during the measurement process is fixed at 0.5 cm. The LED lamps in this setup are powered directly from the main, operating at 220 V and 50 Hz. Two types of lamps are used, one rated at 6 W and the other at 12 W, each offering three lighting modes: Mode 1 emits white light, Mode 2 emits colored light, and Mode 3 combines both white and colored light, providing a high degree of flexibility in terms of lighting options. During the measurement procedure, the electric field is measured above the center of the inductor. In addition, a scan is performed over the LED driver surface at specific coordinates (4 cm, 1.5 cm). This scan is used to collect data or assess specific parameters related to the performance or characteristics of the LED driver at that precise location.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"329 ","pages":"Article 172347"},"PeriodicalIF":3.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834302","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

Design, optimization, and evaluation of ultra-broadband hybrid optical doped-fiber amplifier for O+E+S+C band amplification 用于 O+E+S+C 波段放大的超宽带混合掺杂光纤放大器的设计、优化和评估

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-04-08 DOI: 10.1016/j.ijleo.2025.172328

Krishna Sarma, Mohd. Mansoor Khan

{"title":"Design, optimization, and evaluation of ultra-broadband hybrid optical doped-fiber amplifier for O+E+S+C band amplification","authors":"Krishna Sarma, Mohd. Mansoor Khan","doi":"10.1016/j.ijleo.2025.172328","DOIUrl":"10.1016/j.ijleo.2025.172328","url":null,"abstract":"<div><div>This study presents the design and optimization of a hybrid optical amplifier capable of amplifying optical signals in the O+E+S+C (multiband) wavelength bands. The amplifier’s architecture incorporates Praseodymium, Thulium, and Erbium-doped fiber amplifiers (PDFA, TDFA, and EDFA) connected in parallel configurations. The physical and geometric parameters of the amplifiers are tuned to achieve a signal gain <span><math><mo>></mo></math></span> 18 dB and a noise figure <span><math><mo><</mo></math></span> 4.91 dB for the wavelength region 1270 nm to 1560 nm. Additionally, the impact of the homogeneous up-conversion (HUC) ion-ion interaction mechanism on the signal gain is investigated and minimized by optimizing the amplifier’s physical and geometric characteristics. In the O and S+C bands, respectively, a gain deterioration of 2.3% and 4.6% is observed at 1310 nm and 1500 nm wavelengths. However, a gain increment of 0.48% in the E-band has been observed at 1380 nm. The performance of the multiband HOA is analyzed in coarse wavelength division multiplexing (CWDM), dense wavelength division multiplexing (DWDM), and ultra-dense wavelength division multiplexing (UDWDM) transmission links of an optical fiber communication system operating at data rates ranging from 5 to 10 gigabits per second (Gbps). The multiband HOA is installed as a pre-amplifier in the simulation set-up and assessed based on the quality (Q) factor. An errorless transmission with a Q-Factor <span><math><mo>></mo></math></span> 6.14 has been achieved for all the channels over a distance of 80 km of a single-mode fiber (SMF).</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"329 ","pages":"Article 172328"},"PeriodicalIF":3.1,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816984","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

Eco-friendly synthesis of Nb-doped Fe2O3 nanoparticles using Acacia nilotica leaf extract for photocatalytic and antibacterial applications 利用nilotica叶片提取物环保合成nb掺杂Fe2O3纳米颗粒的光催化和抗菌应用

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-04-05 DOI: 10.1016/j.ijleo.2025.172334

Imama Arif , Iqra Muneer , Asad Abbas , Tasmia Amanuallah , Farhat Yasmeen , Dilawar Ali , Muhammad Hanif

{"title":"Eco-friendly synthesis of Nb-doped Fe2O3 nanoparticles using Acacia nilotica leaf extract for photocatalytic and antibacterial applications","authors":"Imama Arif , Iqra Muneer , Asad Abbas , Tasmia Amanuallah , Farhat Yasmeen , Dilawar Ali , Muhammad Hanif","doi":"10.1016/j.ijleo.2025.172334","DOIUrl":"10.1016/j.ijleo.2025.172334","url":null,"abstract":"<div><div>In this study, Fe₂O₃ nanoparticles (NPs) were synthesized using <em>Acacia nilotica</em> (kiker) leaf extract, which acted as a stabilizing agent. The nanoparticles were then doped with niobium at concentrations of 5 %, 10 %, and 15 % through hydrothermal process. The goal of the work was to evaluate the effect of doping concentrations on both photocatalytic performance, specifically in the degradation of methyl orange (MO) and methylene blue (MB), and antibacterial activity against two Gram-negative bacteria (<em>P. denitrificans, P. maltophilia)</em> and two Gram-positive bacteria <em>(P. streptococcus, B. subtilis</em>). The structural and functional properties of the undoped and Nb-doped Fe₂O₃ NPs were examined through various characterization techniques. These included Fourier Transform Infrared Spectroscopy (FTIR) for vibrational and rotational properties, X-ray Diffraction (XRD) for structural analysis, Dynamic Light Scattering (DLS) for particle size distribution, zeta potential for surface charge, and UV–visible spectroscopy for optical properties. PL spectroscopy showed that the band edge emission occurred at around 1.76 eV. SEM and EDX showed the morphology and element composition of the NPs. SEM showed the hexagonal shapes. Photocatalytic studies under sunlight revealed that the 15 % Nb-doped Fe₂O₃-NPs exhibited the highest degradation efficiency, achieving 70 % methylene blue (MB) and 55 % methyl orange (MO) degradation in 150 and 180 minutes, respectively. Among the undoped samples, the 5 % Nb-doped Fe₂O₃-NPs displayed the most potent antibacterial activity, particularly against <em>Paracoccus denitrificans (P. denitrificans).</em></div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"329 ","pages":"Article 172334"},"PeriodicalIF":3.1,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838803","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

Luminescence properties of Ho3+ ions in Pb3O4−B2O3−P2O5−ZnO-AIIIx (AIIIx=Al2O3, Ga2O3, and In2O3) glasses Pb3O4 - B2O3 - P2O5 - ZnO-AIIIx （AIIIx=Al2O3， Ga2O3和In2O3）玻璃中Ho3+离子的发光特性

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-04-03 DOI: 10.1016/j.ijleo.2025.172315

M.V. Rama Chandra Rao , D. Hariprasad , B. Jyothi , D. Pavan Kumar , P. Naresh , G. Vijaya Lakshmi , M. Nagarjuna , Valluri Ravi Kumar , Y. Gandhi , N. Veeraiah

{"title":"Luminescence properties of Ho3+ ions in Pb3O4−B2O3−P2O5−ZnO-AIIIx (AIIIx=Al2O3, Ga2O3, and In2O3) glasses","authors":"M.V. Rama Chandra Rao , D. Hariprasad , B. Jyothi , D. Pavan Kumar , P. Naresh , G. Vijaya Lakshmi , M. Nagarjuna , Valluri Ravi Kumar , Y. Gandhi , N. Veeraiah","doi":"10.1016/j.ijleo.2025.172315","DOIUrl":"10.1016/j.ijleo.2025.172315","url":null,"abstract":"<div><div>Ho<sup>3+</sup> doped Pb<sub>3</sub>O<sub>4</sub>−B<sub>2</sub>O<sub>3</sub>−P<sub>2</sub>O<sub>5</sub>−ZnO glasses, mixed with group IIIA oxides such as Al<sub>2</sub>O<sub>3</sub>, Ga<sub>2</sub>O<sub>3</sub>, and In<sub>2</sub>O<sub>3</sub>, are fabricated by conventional melting and quenching methods. X-ray diffraction, scanning electron microscopy (SEM), Energy dispersive spectrum (EDS) and Fourier transform infrared techniques (FTIR) were used to characterize these glasses. Optical absorption, Photoluminescence spectra and decay profiles were also registered. Photoluminescence spectra of the three glass compositions obtained at λₑₓ<sub>c</sub> = 361 nm, showed prominent bands corresponding to <sup>5</sup>F<sub>3</sub>,<sup>5</sup>S<sub>2</sub>, <sup>5</sup>F<sub>5,</sub><sup>4</sup>F<sub>4</sub> →<sup>5</sup>I<sub>8</sub> emission transitions. Among different glasses, the GaPBPZHo glass exhibited the maximal emission intensity. The emission spectra suggested that the ligands surrounding the Ho<sup>3+</sup> ions in Ga<sub>2</sub>O<sub>3</sub>doped glasses exhibited greater asymmetry and lower covalence, enhancing their luminescence output. Notably, the quantum efficiency (η) of the <sup>5</sup>S<sub>2</sub>→<sup>5</sup>I<sub>8</sub> transition of Ho<sup>3+</sup> ions was found to be the maximal for GaPBPZHo glass. The CIE chromaticity coordinates (x = 0.577, y = 0.385) for this glass indicated intense green emission, highlighting its potential for use in photonic devices and high-quality green light-emission applications.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"328 ","pages":"Article 172315"},"PeriodicalIF":3.1,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792191","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

Enhancing mechanical squeezing in Brillouin optomechanical system 增强布里渊光机械系统的机械挤压

IF 3.1 3区物理与天体物理

Optik Pub Date : 2025-04-02 DOI: 10.1016/j.ijleo.2025.172324

D.R. Kenigoule Massembele , P. Djorwé , Souvik Agasti , K.S. Nisar , A.K. Sarma , A.-H. Abdel-Aty

{"title":"Enhancing mechanical squeezing in Brillouin optomechanical system","authors":"D.R. Kenigoule Massembele , P. Djorwé , Souvik Agasti , K.S. Nisar , A.K. Sarma , A.-H. Abdel-Aty","doi":"10.1016/j.ijleo.2025.172324","DOIUrl":"10.1016/j.ijleo.2025.172324","url":null,"abstract":"<div><div>We propose a scheme to generate large amount of mechanical squeezing, far beyond the <span><math><mi>3dB</mi></math></span> limit, which is based on synthetic magnetism in optomechanical system that hosts a Backward Stimulated Brillouin Scattering (BSBS) process. Our benchmark system consists of an acoustic mode coupled to two optical modes through the BSBS process, and a Duffing mechanical oscillator that couples to the same optical modes through the standard optomechanical radiation pressure. The synthetic magnetism comes from the modulation of the mechanical coupling between the acoustic and the mechanical mode. When there is no synthetic magnetism, a given amount of mechanical squeezing is generated in the system. This squeezing is mainly dependent on the BSBS process, and it is fragile against thermal noise. By switching on the synthetic magnetism, the degree of the generated squeezing is greatly enhanced and goes far beyond the limit of the <span><math><mi>3dB</mi></math></span>. This induced squeezing persists even weak BSBS process in the system. Moreover, this generated squeezing is robust enough against thermal noise in comparison to the one induced when the synthetic magnetism is off. Furthermore, both the mechanical variance squeezing and effective phonon number exhibit series of peaks and dips depending on the phase modulation of the mechanical coupling. This oscillatory feature is reminiscent of a sudden death and revival of squeezing phenomenon, which can be used to maintain a desired magnitude of squeezing by tuning this phase. Our proposal provides a path towards a flexible scheme that generates large amount of squeezing, far beyond the <span><math><mi>3dB</mi></math></span> limit. Such a generated squeezed states can be used for quantum applications including quantum information processing, quantum sensing and metrology, and quantum computing.</div></div>","PeriodicalId":19513,"journal":{"name":"Optik","volume":"329 ","pages":"Article 172324"},"PeriodicalIF":3.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816983","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

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