Giant enhancement of the Goos-Hänchen shift assisted by quasibound states in the continuum

F Wu, J Wu, Z Guo, H Jiang, Y Sun, Y Li, J Ren… - Physical Review …, 2019 - APS
We achieve reflection-type bound states in the continuum (BICs) in the compound grating
waveguide structure by tuning the excitation of the guided modes. Assisted by the quasi …

Applications of photorefractive crystals

SI Stepanov - Reports on progress in physics, 1994 - iopscience.iop.org
The main suggestions in practical applications of dynamic photorefractive holographic
recording for interferometry, processing of 2D pictures, operations with laser beams, and …

Optical, thermo-optic, electro-optic, and photoelastic properties of bismuth germanate (Bi4Ge3O12)

PA Williams, AH Rose, KS Lee, DC Conrad, GW Day… - Applied Optics, 1996 - opg.optica.org
To assess the suitability of bismuth germanate as an electro-optic material for high precision
applications, we have confirmed and extended previous data on its refractive index, electro …

Spatiotemporal Measurement of Charge at Ceramic Substrate–Silicone Gel Interface in Medium-Voltage Power Modules

K Li, B Zhang, Z Yang, X Jiang… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
With the proliferation of high-voltage, high-power density devices, insulation failure has
emerged as a latent hazard in power modules. Notably, breakdown along ceramic substrate …

The EPR technique as a tool for the understanding of laser systems.: The case of Cr3+ and Cr4+ ions in Bi4Ge3O12

D Bravo, FJ Lopez - Optical Materials, 1999 - Elsevier
The information provided by the Electron Paramagnetic Resonance (EPR) technique about
impurity centres in oxide crystals is of major importance to understand and optimise the …

Optical properties of crystalline and ion-beam amorphized Bi12GeO20: relevance for waveguide applications

O Pena-Rodriguez, J Olivares, I Bányász - Optical Materials, 2015 - Elsevier
Abstract Crystalline Bi 12 GeO 20 samples were irradiated with F ions at 30 MeV.
Spectroscopic ellipsometry measurements were used to determine the optical constants of …

Interband photorefractive effects: Theory and experiments in

G Montemezzani, P Rogin, M Zgonik, P Günter - Physical Review B, 1994 - APS
Near-ultraviolet light induces band-to-band electron transitions and is used to record
interband photorefractive gratings in undoped KNbO 3. The high absorption constant in the …

Circularly polarized narrowband terahertz radiation from a eulytite oxide by a pair of femtosecond laser pulses

R Takeda, N Kida, M Sotome, Y Matsui, H Okamoto - Physical Review A, 2014 - APS
We report on terahertz radiation induced by an optical rectification process in a
noncentrosymmetric and insulating oxide, eulytite Bi 4 Ge 3 O 12, at room temperature. The …

The investigation of optoelectronic properties of doped and co-doped Tm3+ and Tb3+ Bi4Ge3O12 scintillation crystal: new insights from the First principle study

MA Abbass, MT Khan, A Kalsoom, M Khalid… - Journal of Solid State …, 2024 - Elsevier
In this article, the structural, electronic, and optical characteristics of Germanium Bismuthate
Ge 3 Bi 4 O 12 doped and co-doped Tm and Tb have been studied through ab initio …

Optical Voltage Sensor Using Single Fresnel Rhomb Crystal

C Li, R Zeng - IEEE Sensors Journal, 2013 - ieeexplore.ieee.org
A novel optical voltage sensor is proposed by the use of single Fresnel rhomb bismuth
germanate crystal. The optical sensing unit is only composed of one voltage sensing crystal …