Ultrafast Laser-Induced Crystallization of Lead Germanate Glass
نویسندگان
چکیده
Laser-induced space-selective crystallization of glass enabling the growth continuous crystal-in-glass architectures consisting non-centrosymmetric phases with functional properties is promising, including single-crystal waveguides for development integrated optical circuits. In this study, femtosecond laser direct writing crystalline lines inside lead germanate composition close to Pb5Ge3O11 has been demonstrated. The by .moving focused beam required preliminary a seed crystal fixed beam. Confocal Raman spectroscopy revealed precipitation ferroelectric Pb5Ge3O11, which, under certain exposure conditions, could be accompanied metastable phase. Depending on parameters, either bilateral providing split, horseshoe-shaped morphology cross-section, or centered resulting in elongated, elliptical cross-section shape occurred. obtained results are interest fabrication Pb5Ge3O11-based waveguides.
منابع مشابه
1.9-am operation of a Tm:lead germanate glass waveguide laser
The development of coherent light sources in the wavelength region around 2 ,um is of interest because of the presence of absorption bands of several important molecules. Lead germanate was shown to be a particularly suitable glass host for operation of the 2-Am Tm3, H4 to H6 transition in fiber samples"2 (see Fig. 1). The maximum phonon energy is greater than in fluoride glasses, leading to ef...
متن کاملSilica and Germanate Glass High Power Fiber Laser Sources
1 Final report for AOARD/ ITC-PAC Grant 114071 “Silica & Germanate Glass High Power Fiber Laser Sources” Prepared: January 2014 PI and Co-PI information: Principal Investigator: Prof Tanya Monro Co investigators: A/Prof Heike Ebendorff-Heidepriem, A/Prof David Lancaster, Dr David Ottaway Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Australia Period of Investi...
متن کاملPreparation and Elastic Moduli of Germanate Glass Containing Lead and Bismuth
This paper reports the rapid melt quenching technique preparation for the new family of bismuth-lead germanate glass (BPG) systems in the form of (GeO(2))(60)-(PbO)(40-) (x)-(½Bi(2)O(3))(x) where x = 0 to 40 mol%. Their densities with respect of Bi(2)O(3) concentration were determined using Archimedes' method with acetone as a floatation medium. The current experimental data are compared with t...
متن کاملAdvanced bismuth-doped lead-germanate glass for broadband optical gain devices
We fabricated a series of glasses with the composition 94.7GeO2-5Al2O3-0.3Bi2O3PbO =0–24 mol. % . Characteristic absorption bands of bismuth centered at 500, 700, 800, and 1000 nm were observed. Adding PbO was found to decrease the strength of bismuth absorption. The addition of 3%–4% PbO resulted in a 50% increase in lifetime, a 20-fold increase in quantum efficiency, and a 28-fold increase in...
متن کاملUltrafast laser fabrication of Bragg waveguides in chalcogenide glass.
Bragg waveguides are fundamental components in photonic integrated circuits and are particularly interesting for mid-IR applications in high index, highly nonlinear materials. In this work, we present Bragg waveguides fabricated in bulk chalcogenide glass using an ultrafast laser. Waveguides with near circularly symmetric cross sections and low propagation loss are obtained through spatial and ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Crystals
سال: 2021
ISSN: ['2073-4352']
DOI: https://doi.org/10.3390/cryst11020193