Conferences related to Judd-Ofelt theory

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2020 IEEE 18th International Conference on Industrial Informatics (INDIN)

INDIN focuses on recent developments, deployments, technology trends, and research results in Industrial Informatics-related fields from both industry and academia


2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)

Ferroelectric materials and applications


2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)

CLEO®/Europe will showcase the latest developments in a wide range of laser and photonics areas including laser source development, materials, ultrafast science, fibre optics, nonlinear optics, terahertz sources, high-field physics, optical telecommunications, nanophotonics, biophotonics.EQEC will feature the fundamentals of quantum optics, quantum information, atom optics, ultrafast optics, nonlinear phenomena and self-organization, plasmonics and metamaterials, fundamental nanooptics, theoretical and computational photonics.


2018 14th IEEE International Conference on Solid-State and Integrated Circuit Technology (ICSICT)

Process & Device Technologies1. Channel Engineering2. High-k/Metal gate Technology3. Advanced Source/Drain Technology4. Interconnect Technology5. Advanced 3D Integration6. Novel Process Technologies7. Ultra-Thin Body Transistors and Device Variability8. Advanced High-k Metal Gate SoC and High Performance CMOS Platforms 9. CMOS Performance Enhancing and Novel Devices 10. Advanced FinFETs and Nanowire FETs11. CNT, MTJ Devices and Nanowire Photodiodes12. Low- Power and Steep Slope Switching Devices13. Graphene Devices14. Advanced Technologies for Ge MOSFETs15. Organic semiconductor devices and technologies16. Compound semiconductor devices and Technology 17. Ultra High Speed Transistors, HEMT/HBT etc. 18. Advanced Power Devices and Reliability19. Flash Memory20. IT Magnetic RAM21. Resistive RAM


2018 Asia Communications and Photonics Conference (ACP)

Photonics-related physical phenomena and effects, photonic device and integration, optical communications, transmission system and networks, photonic sensors, photonics for energy, radio-over fiber system, optical measurements & metrology.

  • 2017 Asia Communications and Photonics Conference (ACP)

    Asia Communications and Photonics Conference (ACP) is currently the largest conference in Asia-Pacific region on optical communications, photonics, optical sensing and relevant optoelectronic technologies. ACP comes from APOC and AOE, and it has been held annually tracing back to 2001.

  • 2016 Asia Communications and Photonics Conference (ACP)

    ACP Track 1: Novel Fibers and Fiber-based DevicesACP Track 2: Optical Transmission Systems, Subsystems and TechnologiesACP Track 3:Network Architectures, Management and ApplicationsACP/POEM Joint Track 4: Optoelectronic devices and IntegrationACP/POEM Joint Track 5: Optical Signal Processing and Microwave PhotonicsACP/POEM Joint Track 6: Photonics for EnergyACP/POEM Joint Track 7: Ultrafast Photonics and Optical StorageACP/PIBM Joint Track 8: Photonics in Biology and Medicine

  • 2014 Asia Communications and Photonics Conference (ACP)

    Optoelectronic Materials, Devices, and IntegrationNovel Fibers and Fiber-based DevicesOptical Transmission Systems, Subsystems, and TechnologiesNetwork Architectures, Management, and ApplicationsBiophotonics and Optical SensorsDisplays, Solid-State Lighting, Photovoltaics, and Energy-Efficient Photonics

  • 2012 Asia Communications and Photonics Conference (ACP 2012)

    Asia Communications and Photonics Conference (ACP) is Asia's premier conference in the Pacific Rim for photonics technologies, including optical communications, biophotonics, nanophotonics, illumination and applications in energy.

  • 2011 Asia Communications and Photonics Conference and Exhibition (ACP 2011)

    Asia Communications and Photonics Conference and Exhibition (ACP) is Asia's premier conference and exhibition in the Pacific Rim for photonics technologies, including optical communications, biophotonics, displays, illumination and applications in energy. The event will take place 13-16 November 2011 in Shanghai, China, at the Shanghai International Convention Center & Oriental Riverside Hotel. The five technical societies -- SPIE, The IEEE Photonics Society, OSA, the Chinese Optical Society, and the Chinese Institute of Communications -- have joined together to co-sponsor the ACP 2011 conference. The Local Organizing Committee with participation from Shanghai Institute of Optics and Fine Mechanics and Shanghai University will be responsible for local organization of the technical conference. Wen Global Solutions will continue as owner of the exhibition.

  • 2010 Asia Communications and Photonics Conference and Exhibition (ACP 2010)

    The Asia Optical Fiber Communication & Optoelectronic Exposition & Conference (AOE) and Asia -Pacific Optical Communications (APOC) have merged their conferences and tradeshow under a new name: Asia Communications and Photonics Conference and Exhibition (ACP).The combined event creates Asia's premier conference and exhibition in the Pacific Rim for photonics technologies, including optical communications, biophotonics, displays, illumination and applications in energy.

  • 2009 Asia Communications and Photonics Conference and Exhibition (ACP 2009)

    The Asia Optical Fiber Communication & Optoelectronic Exposition & Conference (AOE) and Asia-Pacific Optical Communications (APOC) have merged their conferences and tradeshow under a new name: Asia Communications and Photonics Conference and Exhibition (ACP).The combined event creates Asia's premier conference and exhibition in the Pacific Rim for photonics technologies, including optical communications, biophotonics, displays, illumination and applications in energy.

  • 2008 Asia Optical Fiber Communication & Optoelectronic Exposition & Conference (AOE)

    Optical Fiber Communications and Optoelectronics

  • 2007 Asia Optical Fiber Communication & Optoelectronic Exposition & Conference (AOE)

  • 2006 Asia Optical Fiber Communication & Optoelectronic Exposition & Conference (AOE)


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Periodicals related to Judd-Ofelt theory

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Display Technology, Journal of

This publication covers the theory, design, fabrication, manufacturing and application of information displays and aspects of display technology that emphasize the progress in device engineering, device design, materials, electronics, physics and reliabilityaspects of displays and the application of displays.


Lightwave Technology, Journal of

All aspects of optical guided-wave science, technology, and engineering in the areas of fiber and cable technologies; active and passive guided-wave componentry (light sources, detectors, repeaters, switches, fiber sensors, etc.); integrated optics and optoelectronics; systems and subsystems; new applications; and unique field trials.


Photonics Technology Letters, IEEE

Rapid publication of original research relevant to photonics technology. This expanding field emphasizes laser and electro-optic technology, laser physics and systems, applications, and photonic/ lightwave components and applications. The journal offers short, archival publication with minimal delay.


Quantum Electronics, IEEE Journal of

Generation, amplification, modulation, detection, waveguiding, or techniques and effects that can affect the propagation characteristics of coherent electromagnetic radiation having submillimeter and shorter wavelengths


Selected Topics in Quantum Electronics, IEEE Journal of

40% devoted to special issues published in J. Quantum Electronics. Other topics: solid-state lasers, fiber lasers, optical diagnostics for semi-conductor manufacturing, and ultraviolet lasers and applications.




Xplore Articles related to Judd-Ofelt theory

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Optical Properties of Eu/sup 3+/:Y/sub 2/SiO/sub 5/ crystal

2006 8th International Conference on Solid-State and Integrated Circuit Technology Proceedings, 2006

The spectra of Eu<sup>3+</sup>-doped Y<sub>2</sub>SiO<sub>5</sub> crystal were detected. The Judd-Ofelt intensity parameters Omega<sub>2 </sub>, Omega<sub>4</sub> and Omega<sub>6</sub> were calculated according to the absorption spectra, and were equal to 4.36 times 10 <sup>-20</sup> cm<sup>2</sup>, 0.74 times 10<sup>-20</sup> cm<sup>2 </sup> and 1.074 times 10<sup>-20</sup> cm <sup>2</sup>, respectively. Persistent spectral hole burning (PSHB) were also observed at the temperature of 4.2K in the ...


Analysis of the dynamics of frequency upconversion in Er<sup>3+</sup>/Yb<sup>3+</sup> co-doped KY(WO<inf>4</inf>)<inf>2</inf> crystal

2009 Asia Communications and Photonics conference and Exhibition (ACP), 2009

The absorption spectrum, upconversion spectrum and the fluorescence decay curve of Er3+/Yb3+ co-doped KY(WO4)2 crystal were measured. The radiative transition rates were calculated by Judd-Ofelt theory. A model for the dynamics of frequency upconversion process in Er3+/Yb3+ co-doped KY(WO4)2 crystal was proposed. The Yb-to-Er energy transfer rate and the upconversion coefficients were estimated by numerically solving the rate equations and ...


A simplified method for determination of the induced-emission cross section of neodymium doped glasses

IEEE Journal of Quantum Electronics, 1976

Induced-emission cross sections for the<sup>4</sup><tex>F_{3/2}\rightarrow</te x><sup>4</sup><tex>I_{11/2}</tex>and<sup>4</sup><tex>F_{3/2} \rightarrow</tex><sup>4</sup><tex>I_{13/2}</tex>transitions of Nd<sup>3+</sup>in glasses can be determined with a satisfactory precision by a simplified method, based on the Judd-Ofelt theory, from the measurement of the integrated absorbance of the 750-nm band and of the effective linewidth of the fluorescence band.


Analysis of the dynamics of frequency upconversion in Er(su3+}/Yb(su3+} co-doped KY(WO<inf>4</inf>)<inf>2</inf> crystal

2009 Asia Communications and Photonics conference and Exhibition (ACP), 2009

The absorption spectra and the luminescence decay curve of Er3+/Yb3+ co-doped KY(WO4)2 crystal was measured. The radiative transition rates were calculated by Judd-Ofelt theory. The Yb-to-Er energy-transfer rate and the cooperative upconversion coefficients were estimated by numerically solving the rate equations and fitting simulated curve to the measured data.


Optical transitions of Tm/sup 3+/ ions for amplifiers: how the local structure works in (1-x)TeO/sub 2/+(x)M (where M=LiCl, CdCl/sub 2/, WO/sub 3/) glass

Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges, 2002

Summary form only given. This report reviews some studies on the spectroscopic properties of Tm/sup 3+/ doped tellurite glasses. The effect of temperature on the stimulated emission cross-sections is also discussed. Absorption spectra of the 0.01 mol. Tm/sup 3+/ doped tellurite glasses having 0.3 mol CdCl/sub 2/, LiCl or WO/sub 3/ as the network modifier in the 660 nm-800 nm ...


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Educational Resources on Judd-Ofelt theory

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IEEE.tv Videos

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IEEE-USA E-Books

  • Optical Properties of Eu/sup 3+/:Y/sub 2/SiO/sub 5/ crystal

    The spectra of Eu<sup>3+</sup>-doped Y<sub>2</sub>SiO<sub>5</sub> crystal were detected. The Judd-Ofelt intensity parameters Omega<sub>2 </sub>, Omega<sub>4</sub> and Omega<sub>6</sub> were calculated according to the absorption spectra, and were equal to 4.36 times 10 <sup>-20</sup> cm<sup>2</sup>, 0.74 times 10<sup>-20</sup> cm<sup>2 </sup> and 1.074 times 10<sup>-20</sup> cm <sup>2</sup>, respectively. Persistent spectral hole burning (PSHB) were also observed at the temperature of 4.2K in the crystal. For 15mW dye laser (wavelength: 579.62nm ) burning the crystal immerged in liquid helium for 1 second a spectral hole with about 10MHz hole width were detected and the hole can keep for larger than 24 hours

  • Analysis of the dynamics of frequency upconversion in Er<sup>3+</sup>/Yb<sup>3+</sup> co-doped KY(WO<inf>4</inf>)<inf>2</inf> crystal

    The absorption spectrum, upconversion spectrum and the fluorescence decay curve of Er3+/Yb3+ co-doped KY(WO4)2 crystal were measured. The radiative transition rates were calculated by Judd-Ofelt theory. A model for the dynamics of frequency upconversion process in Er3+/Yb3+ co-doped KY(WO4)2 crystal was proposed. The Yb-to-Er energy transfer rate and the upconversion coefficients were estimated by numerically solving the rate equations and fitting simulated curve to the experimental data.

  • A simplified method for determination of the induced-emission cross section of neodymium doped glasses

    Induced-emission cross sections for the<sup>4</sup><tex>F_{3/2}\rightarrow</te x><sup>4</sup><tex>I_{11/2}</tex>and<sup>4</sup><tex>F_{3/2} \rightarrow</tex><sup>4</sup><tex>I_{13/2}</tex>transitions of Nd<sup>3+</sup>in glasses can be determined with a satisfactory precision by a simplified method, based on the Judd-Ofelt theory, from the measurement of the integrated absorbance of the 750-nm band and of the effective linewidth of the fluorescence band.

  • Analysis of the dynamics of frequency upconversion in Er(su3+}/Yb(su3+} co-doped KY(WO<inf>4</inf>)<inf>2</inf> crystal

    The absorption spectra and the luminescence decay curve of Er3+/Yb3+ co-doped KY(WO4)2 crystal was measured. The radiative transition rates were calculated by Judd-Ofelt theory. The Yb-to-Er energy-transfer rate and the cooperative upconversion coefficients were estimated by numerically solving the rate equations and fitting simulated curve to the measured data.

  • Optical transitions of Tm/sup 3+/ ions for amplifiers: how the local structure works in (1-x)TeO/sub 2/+(x)M (where M=LiCl, CdCl/sub 2/, WO/sub 3/) glass

    Summary form only given. This report reviews some studies on the spectroscopic properties of Tm/sup 3+/ doped tellurite glasses. The effect of temperature on the stimulated emission cross-sections is also discussed. Absorption spectra of the 0.01 mol. Tm/sup 3+/ doped tellurite glasses having 0.3 mol CdCl/sub 2/, LiCl or WO/sub 3/ as the network modifier in the 660 nm-800 nm pumping region are presented. Judd-Ofelt theory gives the calculated oscillator strength for an electric dipole transition from the ground state to an excited state in terms of the /spl Omega//sub t/ (t = 2, 4, 6) intensity parameters. Spontaneous emission probability for an electric dipole emission can then be calculated using these intensity parameters.

  • Spectroscopic properties of Er<sup>3+</sup>doped novel tellurite glass for 1.5 μm amplification

    Optical spectroscopic properties of Er3+doped tellurite glass, 70TeO2-15GeO2-10Nb2O5- 5Li2O (TGNL) and 90TeO2-2ZnO-8PbO (TZP), were investigated for C-band optical amplification. The intensity parameters Ωt(t=2,4,6), the radiative rates, the branching ratios and the fluorescence lifetimes were calculated for Er based on the experimental absorption spectra and Judd-Ofelt theory. Among three Ωts, the Ω2value was comparatively large in Er3+doped TGNL glass while the Ω4and Ω6values are similar to other TeO2-based glasses. The large Ω2value is probably ascribed to the low asymmetry at the Er + sites. The gain coefficient of TGNL and TZP glasses was estimated to be 0.646 and 0.671 cm with the Er3+concentration is 0.760 × 1020cm-3and 0.849 × 1020cm3, respectively. The advantage of TGNL and TZP glasses over other glasses has been discussed.

  • Optical absorption and stimulated emission of neodymium in yttrium orthosilicate

    A spectroscopic investigation of the biaxial crystal yttrium orthosilicate doped with Nd/sup 3+/(Nd/sup 3+/:Y/sub 2/SiO/sub 5/) has been performed. Spectrally and orientationally resolved emission cross sections necessary for the evaluation of laser performance on the Nd/sup 3+/ /sup 4/F/sub 3/2/-/sup 4/I/sub 9/2/ and /sup 4/F/sub 3/2-//sup 4/I/sub 11/2/ transitions have been determined. The Judd-Ofelt theory has been applied to measured values of optical absorption line strengths to obtain the orientation averaged intensity parameters: Omega /sub 2/-3.34*10/sup -20/ cm/sup 2/, Omega /sub 4/=4.35*10/sup -20/ cm/sup 2/, and Omega /sub 6/=5.60*10/sup -20/ cm/sup 2/. These Judd-Ofelt intensity parameter values are significantly different from those previously reported by A.M. Tkachuk et al. Using these intensity parameters, the Nd/sup 3+/ /sup 4/F/sub 2/ metastable state lifetime is predicted to be 225 mu s. Measured low Nd concentration /sup 4/F/sub 3/2/ lifetimes of 214 mu s indicate a high radiative quantum efficiency. Because of the Stark level splitting of the Nd/sup 3+/ /sup 4/F/sub 3/2/ and /sup 4/I/sub 9/2/ manifolds, laser operation at twice one of the Cs atomic resonance filter acceptance wavelengths is possible.<<ETX>>

  • Intense upconversion emission of Er3+/Yb3+-codoped Bi2O3-Ge2-Na2O glasses

    Er<sup>3+</sup>/Yb<sup>3+</sup>-codoped natrium-germanium-bismuth glasses for developing potential upconversion lasers have been fabricated and characterized. The absorption and upconversion fluorescence spectra were measured and investigated. The transition probabilities, excited state lifetimes, and the branching ratios have been predicted for Er<sup>3+</sup> based on the Judd-Ofelt theory. Intense green and red emission bands at around 526, 547, and 657 nm wavelength were observed at room temperature. The mechanisms for explaining these upconversion processes have also been provided. The optimal rare earth doping ratio of Er<sup>3+</sup> and Yb<sup>3+</sup> is 1:6 for these glasses, which results in a stronger upconverssion fluorescence intensities. The upconversion efficiency was measured when the incident light power density was about 270W/cm<sup>2</sup>, and the "standardized" upconversion efficiency for green emission is 2.27times10<sup>-4</sup>. This value is higher than those reported in lead- germanate, lead-tellurite-germanate, and silicate glasses. The results indicate that the Er<sup>3+</sup>/Yb<sup>3+</sup>-codoped natrium-germanium- bismuth oxide glass may be a potential material for developing upconversion optic devices.

  • Radiative and multiphonon relaxation of the mid-IR transitions of Pr/sup 3+/ in LaCl/sub 3/

    Electric and magnetic dipole transition probabilities, fluorescence branching ratios, integrated emission coefficients, fluorescence efficiencies, and fluorescence lifetimes are determined for the lower lying states of Pr:LaCl/sub 3/ using the Judd-Ofelt theory and calculated multiphonon emission probabilities. The results are used to characterize demonstrated mid-IR laser transitions and predict new potential mid-IR laser transitions in Pr:LaCl/sub 3/.



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