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Asian journal of physics : an international quarterly research journal最新文献

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Ultrashort femtosecond pulse laser for directed energy system applications: An analysis 超短飞秒脉冲激光定向能系统应用分析
Asian journal of physics : an international quarterly research journal Pub Date : 2022-06-01 DOI: 10.54955/ajp.31.3-6.2022.635-647
S. Veerabuthiran, J. Nayak
{"title":"Ultrashort femtosecond pulse laser for directed energy system applications: An analysis","authors":"S. Veerabuthiran, J. Nayak","doi":"10.54955/ajp.31.3-6.2022.635-647","DOIUrl":"https://doi.org/10.54955/ajp.31.3-6.2022.635-647","url":null,"abstract":"","PeriodicalId":90793,"journal":{"name":"Asian journal of physics : an international quarterly research journal","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74265988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-house fabrication and detailed analysis of fiber optic long period grating using electric arc discharge method 电弧放电法光纤长周期光栅的自制及详细分析
Asian journal of physics : an international quarterly research journal Pub Date : 2022-06-01 DOI: 10.54955/ajp.31.3-6.2022.a1-a6
Koustav Dey, Kanchan Ghosh, Partha Pratim Das, R. Ranjan, Sourabh Roy
{"title":"In-house fabrication and detailed analysis of fiber optic long period grating using electric arc discharge method","authors":"Koustav Dey, Kanchan Ghosh, Partha Pratim Das, R. Ranjan, Sourabh Roy","doi":"10.54955/ajp.31.3-6.2022.a1-a6","DOIUrl":"https://doi.org/10.54955/ajp.31.3-6.2022.a1-a6","url":null,"abstract":"","PeriodicalId":90793,"journal":{"name":"Asian journal of physics : an international quarterly research journal","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88334934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single hololens imaging configuration in laser speckle photography for in-plane displacement measurement 平面内位移测量激光散斑摄影中单全息透镜成像配置
Asian journal of physics : an international quarterly research journal Pub Date : 2022-01-01 DOI: 10.54955/ajp.31.1.2022.107-113
Abhijit Ghosh, N. Kumar, A. K. Nirala
{"title":"Single hololens imaging configuration in laser speckle photography for in-plane displacement measurement","authors":"Abhijit Ghosh, N. Kumar, A. K. Nirala","doi":"10.54955/ajp.31.1.2022.107-113","DOIUrl":"https://doi.org/10.54955/ajp.31.1.2022.107-113","url":null,"abstract":"","PeriodicalId":90793,"journal":{"name":"Asian journal of physics : an international quarterly research journal","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82671562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the methods to determine the focal length of an imaging system: A tutorial approach 关于确定成像系统焦距的方法:教程方法
Asian journal of physics : an international quarterly research journal Pub Date : 2022-01-01 DOI: 10.54955/ajp.31.1.2022.1-16
Rajpal Singh Sirohi
{"title":"On the methods to determine the focal length of an imaging system: A tutorial approach","authors":"Rajpal Singh Sirohi","doi":"10.54955/ajp.31.1.2022.1-16","DOIUrl":"https://doi.org/10.54955/ajp.31.1.2022.1-16","url":null,"abstract":"","PeriodicalId":90793,"journal":{"name":"Asian journal of physics : an international quarterly research journal","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79850036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Undoped and iron doped Bi12SiO20 crystals as optical limiters 未掺杂和掺铁Bi12SiO20晶体作为光学限制器
Asian journal of physics : an international quarterly research journal Pub Date : 2021-06-30 DOI: 10.54955/ajp.30.6.2021.917-931
P. P. Kiran
{"title":"Undoped and iron doped Bi12SiO20 crystals as optical limiters","authors":"P. P. Kiran","doi":"10.54955/ajp.30.6.2021.917-931","DOIUrl":"https://doi.org/10.54955/ajp.30.6.2021.917-931","url":null,"abstract":"This paper reviews the potential of photorefractive single crystals for optical limiting applications and highlights the optical limiting characteristics of undoped and iron doped Bi12SiO20 (BSO), a photorefractive single crystal belonging to Sillenite family. The contribution of two-photon absorption from two channels: first from valence band to conduction band and the other from an extrinsic silicon-vacancy to conduction band assisted by charge carrier absorption from the trap states of BSO is presented. These processes lead to highly effective nonlinear absorption across the visible region of the electromagnetic spectrum. The specific role of iron doping in enhancing the effective nonlinear absorption by charge carriers as well as intraband absorption for ns laser pulses at three different excitation wavelengths of 532, 600 and 683 nm is discussed. © Anita Publications. All rights reserved.","PeriodicalId":90793,"journal":{"name":"Asian journal of physics : an international quarterly research journal","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75919412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advances in applications of LIBS in India: A Review LIBS在印度的应用进展综述
Asian journal of physics : an international quarterly research journal Pub Date : 2021-06-30 DOI: 10.54955/ajp.30.6.2021.871-888
A. Tarai, Rajendhar Junjuri, Manoj Kumar Gundawar
{"title":"Advances in applications of LIBS in India: A Review","authors":"A. Tarai, Rajendhar Junjuri, Manoj Kumar Gundawar","doi":"10.54955/ajp.30.6.2021.871-888","DOIUrl":"https://doi.org/10.54955/ajp.30.6.2021.871-888","url":null,"abstract":"In this review, a comprehensive overview of laser-induced breakdown spectroscopy (LIBS) research work carried out by different groups in India is presented. In the last two decades, it has been extensively explored for a wide range of applications, including estimation of elemental concentration and the classification of materials. LIBS is commonly used for variety of purposes, including environmental monitoring, industrial and nuclear applications, geological and archaeological surveys, defence applications, and biological applications, etc. In these milieu, various analytical methodologies and machine learning algorithms were used for both qualitatively and quantitatively analyzing LIBS data. © Anita Publications. All rights reserved.","PeriodicalId":90793,"journal":{"name":"Asian journal of physics : an international quarterly research journal","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88349961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent Advances in Optics (RAO): Contribution of D. Narayana Rao in Optics and Photonics research in India 光学新进展:Narayana RAO在印度光学和光子学研究中的贡献
Asian journal of physics : an international quarterly research journal Pub Date : 2021-06-30 DOI: 10.54955/ajp.30.6.2021.837-848
Jitendra Nath Acharyya, G. Prakash
{"title":"Recent Advances in Optics (RAO): Contribution of D. Narayana Rao in Optics and Photonics research in India","authors":"Jitendra Nath Acharyya, G. Prakash","doi":"10.54955/ajp.30.6.2021.837-848","DOIUrl":"https://doi.org/10.54955/ajp.30.6.2021.837-848","url":null,"abstract":"The first documented speculations on light were found in oriental and Greek schools of philosophy. The investigations on the light in India were rooted way back to the ancient era. The Indian Samkhya, Nyaya, and Vaisheshika identified light or fire (Tejas) as one of the key elements among the five elementary things of the universe. The pioneering results of optics and spectroscopy were witnessed in the era of stellar people like Sir Jagadish Chandra Bose and Sir C V Raman. The research has then taken a new directive into the development of nonlinear optics and photonics after the invention of the laser. The present article reviews the past few decades pioneering works of Prof. D Narayana Rao, an experimental physicist, in the context of optics and photonics in India. The most notable contributions of Prof Rao, introduced in India for the first time, are white-light interferometry, degenerate four-wave mixing (DFWM), electricfield induced second harmonic generation (EFISHG), incoherent laser spectroscopy (using dye laser), and femtosecond lasers for creating nano/microstructures. © Anita Publications. All rights reserved.","PeriodicalId":90793,"journal":{"name":"Asian journal of physics : an international quarterly research journal","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84623032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spectral Interferometry to Spectral Interferometry –A short journey through complex optical fields 光谱干涉法到光谱干涉法-通过复杂光场的短途旅行
Asian journal of physics : an international quarterly research journal Pub Date : 2021-06-30 DOI: 10.54955/ajp.30.6.2021.831-836
N. Viswanathan
{"title":"Spectral Interferometry to Spectral Interferometry –A short journey through complex optical fields","authors":"N. Viswanathan","doi":"10.54955/ajp.30.6.2021.831-836","DOIUrl":"https://doi.org/10.54955/ajp.30.6.2021.831-836","url":null,"abstract":"","PeriodicalId":90793,"journal":{"name":"Asian journal of physics : an international quarterly research journal","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89147541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ultrafast nonlinear optical and spectroscopic studies at the University of Hyderabad, India 印度海得拉巴大学的超快非线性光学和光谱研究
Asian journal of physics : an international quarterly research journal Pub Date : 2021-06-30 DOI: 10.54955/ajp.30.6.2021.849-862
Venugopal Rao Soma, S. Hamad
{"title":"Ultrafast nonlinear optical and spectroscopic studies at the University of Hyderabad, India","authors":"Venugopal Rao Soma, S. Hamad","doi":"10.54955/ajp.30.6.2021.849-862","DOIUrl":"https://doi.org/10.54955/ajp.30.6.2021.849-862","url":null,"abstract":"This mini-review presents the results from our various efforts on the nonlinear optical (NLO) and ultrafast studies from the year 1997-2014 at the University of Hyderabad, India under the leadership of Prof Narayana Rao Desai. Our group was one of the first to work on the third-order nonlinear optical properties of novel organic materials such as porphyrins and phthalocyanines using nanosecond, picosecond, and femtosecond laser pulses. Further, a summary of the second order NLO studies performed along with femtosecond laser direct writing studies are summarized. Some of the important results accomplished during this period from our group were also highlighted. © Anita Publications. All rights reserved.","PeriodicalId":90793,"journal":{"name":"Asian journal of physics : an international quarterly research journal","volume":"101 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80793550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ultrafast electron injection kinetics and effect of plasmonic silver nanoparticle at organic dye-TiO2 interface 等离子体纳米银在有机染料- tio2界面上的超快电子注入动力学及影响
Asian journal of physics : an international quarterly research journal Pub Date : 2021-06-30 DOI: 10.54955/ajp.30.6.2021.933-945
C. Biswas, Md Soif Ahmed, S. S. K. Raavi
{"title":"Ultrafast electron injection kinetics and effect of plasmonic silver nanoparticle at organic dye-TiO2 interface","authors":"C. Biswas, Md Soif Ahmed, S. S. K. Raavi","doi":"10.54955/ajp.30.6.2021.933-945","DOIUrl":"https://doi.org/10.54955/ajp.30.6.2021.933-945","url":null,"abstract":"In this mini review, we present the investigations on the electron injection kinetics of two thioalkyl substituted tetrathiafulvalene dye molecules in mesoporous TiO2 layers for dye-sensitized solar cells (DSSCs). Steady-state absorption and photoluminescence (PL) spectroscopy techniques were employed to apprehend the excited state dynamics of the molecules as thin-film deposited on quartz and mesoporous TiO2 layers. Time-resolved PL measurements at the “dye-TiO2” interface provided initial evidence of electron injection by fast PL quenching decay dynamics for both the molecules. Detailed target analysis of the femtosecond transient absorption spectroscopy (TAS) data of the “dye-TiO2” sample showed a multi-step ultrafast electron injection for both molecules where the fastest injection components were ≈374 fs and ≈314 fs for G1 and G3 molecules, respectively. Furthermore, the introduction of silver nanoparticles (AgNPs) at the dye-TiO2 interface resulted in surface plasmon resonance induced ultrafast and enhanced electron-injection and reduced charge-recombination dynamics. We observed improved light trapping and hot electron injection from Ag NPs to TiO2. © Anita Publications. All rights reserved.","PeriodicalId":90793,"journal":{"name":"Asian journal of physics : an international quarterly research journal","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77977843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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