http://irgu.unigoa.ac.in/drs/handle/unigoa/5 2026-10-16T13:45:48Z 2026-10-16T13:45:48Z Kuwelkar, Sonia Santosh http://irgu.unigoa.ac.in/drs/handle/unigoa/8115 2026-10-16T09:49:14Z 2024-10-01T00:00:00Z

Optimization of Routing Protocols in Wireless Sensor Networks for Smart City Applications Kuwelkar, Sonia Santosh

2024-10-01T00:00:00Z Bhlos, Nafea Manea http://irgu.unigoa.ac.in/drs/handle/unigoa/8111 2026-10-16T06:36:24Z 2025-10-01T00:00:00Z

Understanding the role of Z atom in influencing martensitic transformation in Ni-Mn-Z (Z = Ga, In, Sn, Sb) Heusler alloys Bhlos, Nafea Manea

2025-10-01T00:00:00Z Kakodkar, Satyesh Avadhut Shenvi http://irgu.unigoa.ac.in/drs/handle/unigoa/8110 2026-10-16T06:22:10Z 2026-04-01T00:00:00Z

Development of Composite Material using Mine Waste Kakodkar, Satyesh Avadhut Shenvi

2026-04-01T00:00:00Z S. D'Souza Raut-Dessai, R. http://irgu.unigoa.ac.in/drs/handle/unigoa/8109 2026-10-16T06:15:53Z 2026-01-01T00:00:00Z

A review on rare earth ions-doped tellurite glasses for photon up-conversion: Advances and applications S. D'Souza; Raut-Dessai, R. Photon up-conversion in tellurite glass exhibits a strong NIR emission and has achieved significant success in the field of photonics. Herein, the review offers an overview of quantitative and qualitative studies on the up-conversion phenomenon in tellurite-based glasses. Rare-earth ion doped tellurite glasses have emerged as one of the most versatile glassy platforms in modern photonics owing to their unique combination of low phonon energy, extended infrared transparency, high refractive index, significant rare-earth ion solubility, and exceptional nonlinear optical response. The review provides a comprehensive overview of the underlying mechanisms governing up-conversion, with emphasis on energy-transfer up-conversion pathways to correlate emission behaviour with host composition. The novelty in this system is its high rare-earth-ion solubility, which enables incorporating multiple rare-earth ions and efficient co-doping strategies to tailor up-conversion properties. Here we have identified three key factors governing photon up-conversion in Er sup(3+0, Ho sup(3+), Tm sup(3+), Dy sup(3+) and Sm sup(3+) ions doped/co-doped tellurite glass systems: hydroxyl group-induced concentration quenching, excitation wavelength and the up-conversion emission. The up-conversion properties and Judd-Ofelt parameters (omega2, omega4, omega6) were systematically compared for a common host matrix while varying the rare-earth dopant. Moreover, the review also highlights the current state-of-the-art application and the roadmap for optimizing rare-earth ions doped tellurite glasses towards next generation photonic applications and quantum technologies.

2026-01-01T00:00:00Z