Laser Physics最新文献_第2页

Micro-displacement measurement of optical interference with two-ring conjugated vortices 双环共轭漩涡光学干涉的微位移测量

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-08-22 DOI: 10.1088/1555-6611/ad6d50

Xiao Yu, Hongru Li, Zetian Zhang, Ru Zhang, Sha Wang

引用次数: 0

Bandwidth modulation and pulse characterization of passively Q-switched erbium-doped fiber laser 无源 Q 开关掺铒光纤激光器的带宽调制和脉冲特性分析

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-08-22 DOI: 10.1088/1555-6611/ad6d51

Farah Diana Muhammad, Khalilah Zatiliman Hamdan

{"title":"Bandwidth modulation and pulse characterization of passively Q-switched erbium-doped fiber laser","authors":"Farah Diana Muhammad, Khalilah Zatiliman Hamdan","doi":"10.1088/1555-6611/ad6d51","DOIUrl":"https://doi.org/10.1088/1555-6611/ad6d51","url":null,"abstract":"We demonstrate the modulation of laser bandwidth by utilizing an ultranarrow tunable bandpass filter (UNTBF) in a passively Q-switched erbium-doped fiber laser. The passive Q-switch mechanism is enabled by using carbon nanotubes as saturable absorber at a Q-switched threshold of 35.5 mW. Based on spectral filtering effect introduced by the UNTBF, the 3 dB laser bandwidth can be tuned from 0.016 nm to 0.478 nm at a fixed pump power of 75.9 mW. The corresponding pulse behavior for each different bandwidth is characterized, and the results reveals that the pulse width can be as well tuned from 7.8 to 2.6 <italic toggle=\"yes\">μ</italic>s against the laser bandwidth, which agrees with the rule of time-bandwidth product. Correspondingly, the pulse repetition rate and the pulse energy vary from 16.23 kHz to 26.16 kHz and from 0.67 to 1.03 <italic toggle=\"yes\">μ</italic>J respectively across the laser bandwidth. Further investigation of the pulse performance is performed against the pump power increment up to 107.2 mW. To the best of our knowledge, this is the first demonstration of spectrum bandwidth modulation in a passively Q-switched fiber laser, which can be useful for fully exploiting the possibilities of Q-switched pulse applications.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"40 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184852","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}

引用次数: 0

Superposition and interference of Gaussian wave packets for laser transverse modes 激光横向模式高斯波包的叠加与干涉

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-08-22 DOI: 10.1088/1555-6611/ad6d4c

Lu Liu, Fuyong Wang

引用次数: 0

Chalcogenide Ge20Sb5Se75 photonic crystal fiber with seven air-hole rings for ultraflat mid-infrared supercontinuum generation 具有七个气孔环的卤化物 Ge20Sb5Se75 光子晶体光纤，用于超平中红外超连续发光

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-08-22 DOI: 10.1088/1555-6611/ad6d4b

Lanh Chu Van, Bao Tran Le Tran

{"title":"Chalcogenide Ge20Sb5Se75 photonic crystal fiber with seven air-hole rings for ultraflat mid-infrared supercontinuum generation","authors":"Lanh Chu Van, Bao Tran Le Tran","doi":"10.1088/1555-6611/ad6d4b","DOIUrl":"https://doi.org/10.1088/1555-6611/ad6d4b","url":null,"abstract":"Supercontinuum (SC) generation in solid-core circular photonic crystal fibers (PCFs) made of Ge20Sb5Se75 is numerically analyzed. A large core is projected to increase light coupling efficiency into selected PCFs as well as raise coupling to standard silica fibers. High nonlinear coefficient and near-zero flat dispersion allow ultraflat SC spanning 1.5–4.6 <italic toggle=\"yes\">μ</italic>m in an all-normal dispersion regime. This requires 3 kW of peak power with 180 fs of pulse duration. The fiber with one zero-dispersion wavelength (ZDW) generates SC bandwidth in the range of 1.54–7.39 <italic toggle=\"yes\">μ</italic>m at 3.5 <italic toggle=\"yes\">μ</italic>m using peak power of 10 kW. For the same input power, the SC spectral covers from 1.39 to 7.36 <italic toggle=\"yes\">μ</italic>m in 10 cm of fiber with two ZDWs. These are wider SC bandwidths than those of previous chalcogenide fibers reached with lower peak powers. Therefore, the proposed Ge20Sb5Se75 PCFs are excellent candidates for the broadband ultraflat mid-infrared SC spectra used in high-speed nonlinear imaging and frequency measurement.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"29 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184849","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}

引用次数: 0

Authenticated multi-party quantum key agreement protocol based on cluster states 基于簇状态的认证多方量子密钥协议

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-08-21 DOI: 10.1088/1555-6611/ad6d52

Li Zhang, Zhaowei Han, Yuehua Li, Qiuyu Ma, Lele Li

引用次数: 0

Dynamics of Airyprime beams with higher-order spectral phase modulation in the fractional Schrödinger equation 分数薛定谔方程中具有高阶频谱相位调制的 Airyprime 光束动力学

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-08-21 DOI: 10.1088/1555-6611/ad6d4d

Shoukui Zhao, Juncen Li, Tianqi Li, Xianwei Huang, Yanfeng Bai, Xiquan Fu

{"title":"Dynamics of Airyprime beams with higher-order spectral phase modulation in the fractional Schrödinger equation","authors":"Shoukui Zhao, Juncen Li, Tianqi Li, Xianwei Huang, Yanfeng Bai, Xiquan Fu","doi":"10.1088/1555-6611/ad6d4d","DOIUrl":"https://doi.org/10.1088/1555-6611/ad6d4d","url":null,"abstract":"In this paper, the effects of spectral phase modulation on propagation characteristics of Airyprime beams modeled by fractional Schrödinger equation are studied, and the propagation dynamics of Airyprime beams are analyzed. It is found that the second and third-order spectral phase modulation significantly affect the beams dynamics. For the second-order spectral phase modulation, an increase in the Lévy index leads to a forward shift of the peak position, and the peak intensity increases for the positive spectral modulation coefficient, while the opposite tendency of the peak intensity is found for the negative spectral modulation coefficient. In addition, the appearance of multiple peaks depends on the positive modulation coefficient. For the third-order spectral phase modulation, the peak intensity increases under the larger spectral phase modulation coefficient with the backward shift of the maximum peak position, and an increase of the Lévy index results in the forward shift of the focusing position. The results show potential applications of Airyprime beams in various fields such as optical controlling and manipulation.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"69 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184854","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}

引用次数: 0

Restoration of entanglement transfer by environment-assisted measurement and quantum measurement reversal in two parallel Heisenberg spin chains 在两条平行海森堡自旋链中通过环境辅助测量和量子测量反转恢复纠缠传递

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-08-20 DOI: 10.1088/1555-6611/ad6d55

Yang Leng

引用次数: 0

Enhancing coherence by local parity-time symmetric operation under the non-Markovian environment 在非马尔可夫环境下通过局部奇偶时对称运算增强一致性

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-08-20 DOI: 10.1088/1555-6611/ad6d56

Yang Leng

{"title":"Enhancing coherence by local parity-time symmetric operation under the non-Markovian environment","authors":"Yang Leng","doi":"10.1088/1555-6611/ad6d56","DOIUrl":"https://doi.org/10.1088/1555-6611/ad6d56","url":null,"abstract":"The dynamic behavior of the relative entropy of coherence for a two-level system is systematically investigated within non-Markovian environment. We derive the exact expressions of relative entropy quantifying coherence for an exactly solving model consisting of single qubit interacting with independent structured reservoir. By employing local non-Hermitian operation, i.e. parity-time (<inline-formula>\u0000<tex-math><?CDATA $mathcal{PT}$?></tex-math>\u0000<mml:math overflow=\"scroll\"><mml:mrow><mml:mrow><mml:mi>PT</mml:mi></mml:mrow></mml:mrow></mml:math>\u0000<inline-graphic xlink:href=\"lpad6d56ieqn1.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula>) symmetric operation, we show that the vanished quantum coherence can be effectively restored under the non-Markovian regimes. Furthermore, the freezing phenomenon of the coherence can be detected by using the optimal <inline-formula>\u0000<tex-math><?CDATA $mathcal{PT}$?></tex-math>\u0000<mml:math overflow=\"scroll\"><mml:mrow><mml:mrow><mml:mi>PT</mml:mi></mml:mrow></mml:mrow></mml:math>\u0000<inline-graphic xlink:href=\"lpad6d56ieqn2.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula> symmetric operation strength within the non-Markovian environments.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"34 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184745","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}

引用次数: 0

Quantum correlation swapping between Bell-diagonal states 贝尔对角态之间的量子相关交换

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-08-20 DOI: 10.1088/1555-6611/ad6d4e

Chuanmei Xie, Senbo Tian, Zekai Xie, Jinhua Yu, Zhanjun Zhang

{"title":"Quantum correlation swapping between Bell-diagonal states","authors":"Chuanmei Xie, Senbo Tian, Zekai Xie, Jinhua Yu, Zhanjun Zhang","doi":"10.1088/1555-6611/ad6d4e","DOIUrl":"https://doi.org/10.1088/1555-6611/ad6d4e","url":null,"abstract":"Quantum correlation (QC) swapping is a generalization of quantum entanglement swapping, in which the concerned QCs can be quantum entanglement, QC beyond quantum entanglement, or both of them. In general, QC swapping is different from quantum entanglement swapping. Obviously, the study range of the former is beyond than the latter, and the former can give more interesting and significant applications in quantum information processings. So far, QC swapping has been studied explicitly only for a rather limited set of two-qubit quantum states as the initial states and cases for more general QC swapping with multi-parameter initial states are not known. In this article, we explore the QC swapping case with three-parameter Bell-diagonal (BD) states as the initial states. The familiar QC measure, quantum discord (Ollivier and Zurek 2001 <italic toggle=\"yes\">Phys. Rev. Lett.</italic>\u0000<bold>88</bold> 017901), is utilized to quantify all the QCs in the concerned states. It is found that a long-distance shared QC can be acquired through the BD-initial states case of QC swapping. Moreover, some distinct features and characteristics can be exposed.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"56 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184743","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}

引用次数: 0

Dynamics of a two-level atom in the presence of a medium-assisted thermal field 介质辅助热场作用下的两级原子动力学

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-07-15 DOI: 10.1088/1555-6611/ad4bb5

Razieh Gonouiezadeh and Hassan Safari

引用次数: 0