Spectral investigations of Nd3+:Ba(PO3)2+La2O3 glasses for infrared laser gain media applications

Photoluminescence and optical transition properties of Sm3+ activated lead-borate glasses

Eye sight is sometimes deceptive, especially in determining the quality of a canned food, so it is necessary to use technology that resembles human visual observation, namely in the form of an application. The process to detect the quality of canned food uses image processing methods, especially thresholding, which is then designed so that the application is able to determine the quality of canned food with the help of the MATLAB GUI which detects and then sends it from making the MATLAB GUI on the Laptop to Android using FTP (File Transfer Protocol). At the end of the process, it is marked with known good and bad quality of canned food with an android application that has been specially designed with an accuracy level of 84% with a thresholding value of 70.

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Identification of Feasibility of Canned Based Foods Image Processing Techniques Using Thresholding

• New glass network of Dy 3+ doped lead boro-telluro-phosphate glasses have been studied. • Influence of Li + , Zn 2+, Ca 2+, Sr 2+ , and Ba 2+ on Dy 3+ emission properties are reported. • The structural and optical studies were investigated for all the glasses. • Generation of cool white light is confirmed using CCT values. Trivalent dysprosium doped Lead boro-telluro-phosphate glasses were synthesized with varying modifiers such as Li + , Zn 2+ , Ca 2+ , Sr 2+ , and Ba 2+ using traditional route of glass preparation (melt quenching). The basic network formation and spectroscopical aspects of the as piped outed glasses was analyzed using Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), UV–vis-NIR, photoluminescence (PL) and emission decay measurements. The existence of elementary functional groups pertaining to the present glass network was explored through FTIR spectral analysis. Bonding parameters (δ) were found to analyze the bonding nature of the rare earth ions and the surrounding metal ligand site. The optical bandgap, band tailing parameter and Urbach energy was found using Tauc’s method in order to identify the transparent region of the prepared glass samples. Furthermore, the symmetry of ligands around the Dy 3+ ions has been explored with absorption spectral data by inspecting the Judd-Ofelt (JO) parameters and oscillator strengths of the as-synthesized samples. The radiative properties for instance branching ratios (β R ), stimulated emission cross-section (σ P ) and lifetime (τ R ) of the meta stable states are estimated to realize the novel applications. The CIE colour coordinates and Y/B ratio values were estimated employing the photoluminescence spectra, whereas the colour purity and it’s colour correlated temperature (CCT) were determined following the (x,y) values thus confirms the generation of neutral white light emitting ability of the prepped samples. The decay or lifetime analysis shows the well fitted non-exponential behavior of the present Dy 3+ doped Lead boro-telluro-phosphate glasses. 

Modifier’s influence on spectral properties of dysprosium ions doped lead boro-telluro-phosphate glasses for white light applications

Broadband NIR radiative transitions in Er3+/Tm3+ co-doping tellurite glass material

Energy transfer and broad-band luminescence of Nd3+-Er3+ co-doped Lithium Fluorophosphate (LFP) glasses

Spectroscopic investigation of dysprosium doped bismuth-borate glasses for white light application

Gerak parabola merupakan gerak dua dimensi yang membutuhkan analisis yang akurat dalam memahaminya. Matlab merupakan salah satu aplikasi komputer yang dapat menghasilkan grafik dan simulasi menarik untuk penulisan laporan atau naskah ilmiah. Dengan berkembangnya penggunaan teknologi komputer dalam pembelajran, penggunaan komputer untuk membantu siswa lebih mudah memahami konsep semakin banyak digunakan. Dalam pembelajaran fisika, masalah yang sering dialami siswa untuk memahami konsep fisika adalah pemodelan matematis suatu fenomena fisika yang terkadang cukup kompleks sehingga sulit dipahami siswa. Dengan menggunakan simulasi dengan matlab, siswa dapat belajar membuat grafik gerak parabola. Dengan menggunakan simulasi matlab, siswa juga dilatih belajar menggunakan metode ilmiah. Pemanfaatan simulasi dengan matlab dalam pembelajaran, peran guru sangat penting untuk membimbing siswa melakukan simulasi secara tepat.

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Pemodelan dan analisis gerak parabola dua dimensi dengan menggunakan aplikasi gui matlab

Abstract Dy3+ doped oxy-fluoride phosphate glass was prepared by melt quenching technique. The glass samples were subjected to FTIR, absorption, and photoluminescence. The absorption spectrum shows several absorption peaks but strong absorption peak observed at wavelength 1280 nm NIR region. Strong yellow emission at 572 nm corresponding to 4F9/2→6H13/2 and blue emission at 482 nm corresponding to 4F9/2→6H15/2 were observed. The analysis of Judd–Ofelt study was applied to establish the intensity parameters and radiative properties of Dy3+ doped oxy-fluoride phosphate glass. The J–O result suggests that the oxy-fluoride phosphate glass has the potential use as an active laser medium.

Chayani Sarumaha Sarumaha

Papers

Energy transfer and broad-band luminescence of Nd3+-Er3+ co-doped Lithium Fluorophosphate (LFP) glasses

Spectroscopic investigation of dysprosium doped bismuth-borate glasses for white light application

Photoluminescence and optical transition properties of Sm3+ activated lead-borate glasses

Pemodelan dan analisis gerak parabola dua dimensi dengan menggunakan aplikasi gui matlab

White Light Emission of Dy3+ Doped Oxy-Fluoride Phosphate Glass System for Active Laser Medium