We demonstrate the first Tm-doped yttria planar waveguide laser to our knowledge, grown by pulsed laser deposition. A maximum output power of 35 mW at 1.95 μm with 9% slope efficiency was achieved from a 12 μm-thick film grown on a Y(3)Al(5)O(12) substrate.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.21.012460 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A Comparison of the Optical Properties of Fibre-Based Luminescent Solar Concentrators and Transparent Wood Towards Sustainable Waveguides.
Luminescence
January 2025
Department of Plant Biotechnology, Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India.
Aiming at net-zero emissions, most international and national policies focus on sustainable development goals. Hence, there is an immediate need for replacing carbon-intensive materials with biomaterials. In this respect, this article presents a road-map for moving from polymeric to sustainable waveguides in optical devices.
View Article and Find Full Text PDFAchieving desired characteristic impedances in customized coplanar waveguide transmission line design.
MethodsX
December 2024
Department of Electrical Engineering, College of Engineering Al-Hussein Bin Talal, University, Ma'an 71111, Jordan.
Coplanar waveguide (CPW) transmission lines are valued for their planar design, low radiation, and minimized signal loss, but controlling their characteristic impedance remains a challenge. This study employs the Taguchi method, a statistical approach, to optimize the characteristic impedance by adjusting eight control factors: track width, track thickness, gap width, dielectric height, backplane thickness, conductor material conductivity, dielectric conductivity, and operational frequency. The analysis evaluates these factors across three levels to find optimal conditions, with dielectric height and track width identified as most influential.
View Article and Find Full Text PDFMeasuring the permittivity of fused silica with planar on-wafer structures up to 325 GHz.
Appl Phys Lett
January 2024
Communications Technology Laboratory, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Fused silica has become an interesting alternative to silicon for millimeter-wave (mmWave) applications. Unfortunately, there are a few reports on the measurement of fused silica's permittivity above 110 GHz that use electrical rather than optical methods. Given that mmWave applications use electrical circuits, additional electrical data would be useful to industry.
View Article and Find Full Text PDFThree-Dimensional Laser Creation of a Near-IR Laser-Gain Medium Based on Hydride Donor/Acceptor Complexes Made of Coupled Laser-Induced Silver Nanoclusters with Ytterbium Ions.
ACS Appl Mater Interfaces
January 2025
Université de Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, Pessac F-33600, France.
Femtosecond laser inscription in a ytterbium-doped silver-containing phosphate glass is demonstrated by achieving 3D highly localized laser-induced silver photochemistry. The produced fluorescent silver nanoclusters lead to high optical contrast in the visible range, showing that the coinsertion of Yb ions is not detrimental to the silver-based photochemistry. We demonstrate efficient energy transfer from these silver nanoclusters to the rare-earth Yb ions, leading to near-IR background-free fluorescence emission.
View Article and Find Full Text PDFArticle Synopsis
- A fiber Bragg grating (FBG) demodulation system using arrayed waveguide gratings (AWGs) has been developed, integrating key components like photodiode arrays and transimpedance amplifiers.
- The system features eight output channels, with signals processed for high-speed transmission via Ethernet, resulting in a compact design measuring 200 × 100 × 60 mm.
- Experimental results indicate the system achieves a wavelength demodulation accuracy of 4.24 pm and can handle demodulation rates exceeding 200 kHz, making it suitable for high-frequency vibration sensing applications.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!