AI Article Synopsis
- Chip-based integrated photonic laser diodes were developed, emitting light in the violet (412 nm) and blue (461 nm) spectrum with low phase noise.
- These lasers utilized GaN-based structures and were coupled to high-quality micro-resonators for improved optical feedback and mode selection, resulting in narrow emission linewidths.
- The best-performing configuration exhibited a side-mode suppression ratio of approximately 36 dB at 412 nm and a final linewidth of only 3.8 MHz at 461 nm, indicating strong potential for use in portable quantum systems.
Article Abstract
Chip-based, single-frequency and low phase-noise integrated photonic laser diodes emitting in the violet (412 nm) and blue (461 nm) regime are demonstrated. The GaN-based edge-emitting laser diodes were coupled to high-quality on-chip micro-resonators for optical feedback and mode selection resulting in laser self-injection locking with narrow emission linewidth. Multiple group III-nitride (III-N) based photonic integrated circuit chips with different waveguide designs including single-crystalline AlN, AlGaN, and GaN were developed and characterized. Single-frequency laser operation was demonstrated for all studied waveguide core materials. The best side-mode suppression ratio was determined to be ∼36 dB at 412 nm with a single-frequency laser emission linewidth of only 3.8 MHz at 461 nm. The performance metrics of this novel, to the best of our knowledge, type of laser suggest potential implementation in next-generation, portable quantum systems.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OL.486758 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effect of Ce Content on Modification Behavior of Inclusions and Corrosion Resistance of 316L Stainless Steel.
Materials (Basel)
December 2024
School of Rare Earth Industry (School of Rare Earth Engineering and Technology), Inner Mongolia University of Science and Technology, Baotou 014010, China.
The changes in the inclusions in 316L stainless steel before and after Ce addition were studied by adding different contents of Ce. The effects of rare earth Ce treatment on the modification of MnS inclusions in steel and the pitting corrosion resistance of 316L stainless steel are studied by field-emission scanning electron microscopy, laser confocal microscopy, the 6% FeCl corrosion weight loss test, and Tafel polarization curve test. The results show that the addition of Ce reduces the corrosion rate of stainless steel in 6% FeCl solution, and reduces the number and size of corrosion pits.
View Article and Find Full Text PDFHigh Mobility Emissive Organic Semiconductors for Optoelectronic Devices.
J Am Chem Soc
January 2025
Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
High mobility emissive organic semiconductors (HMEOSCs) are a kind of unique semiconducting material that simultaneously integrates high charge carrier mobility and strong emission features, which are not only crucial for overcoming the performance bottlenecks of current organic optoelectronic devices but also important for constructing high-density integrated devices/circuits for potential smart display technologies and electrically pumped organic lasers. However, the development of HMEOSCs is facing great challenges due to the mutually exclusive requirements of molecular structures and packing modes between high charge carrier mobility and strong solid-state emission. Encouragingly, considerable advances on HMEOSCs have been made with continuous efforts, and the successful integration of these two properties within individual organic semiconductors currently presents a promising research direction in organic electronics.
View Article and Find Full Text PDFCombination of plasma acoustic emission signal and laser-induced breakdown spectroscopy for accurate classification of steel.
Anal Chim Acta
January 2025
Key Laboratory of High Performance Manufacturing for Aero Engine (MIIT), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China. Electronic address:
Background: Fast and accurate classification of steel can effectively improve industrial production efficiency. In recent years, the use of laser-induced breakdown spectroscopy (LIBS) in conjunction with other techniques for material classification has been developing. Plasma Acoustic Emission Signal (PAES) is a type of modal information separate from spectra that is detected using LIBS, and it can reflect some of the sample's physicochemical information.
View Article and Find Full Text PDFDiagnostic modalities in the mediastinum and the role of bronchoscopy in mediastinal assessment: a narrative review.
Mediastinum
December 2024
Division of Pulmonary, Critical Care and Sleep Medicine, University of California San Diego, San Diego, CA, USA.
Background And Objective: Diagnosis of pathology in the mediastinum has proven quite challenging, given the wide variability of both benign and malignant diseases that affect a diverse array of structures. This complexity has led to the development of many different non-invasive and invasive diagnostic modalities. Historically, diagnosis of the mediastinum has relied on different imaging modalities such as chest X-ray, computed tomography (CT), magnetic resonance imaging, and positron emission topography.
View Article and Find Full Text PDFAn Amorphous Donor-Acceptor Conjugated Polymer with Both High Charge Carrier Mobility and Luminescence Quantum Efficiency.
Angew Chem Int Ed Engl
January 2025
Oxford University: University of Oxford, Department of Chemistry, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND.
Organic semiconducting polymers play a pivotal role in the development of field-effect transistors (OFETs) and organic light-emitting diodes (OLEDs), owing to their cost-effectiveness, structural versatility, and solution processability. However, achieving polymers with both high charge carrier mobility (μ) and photoluminescence (PL) quantum yield (Φ) remains a challenge. In this work, we present the design and synthesis of a novel donor-acceptor π-conjugated polymer, TTIF-BT, featuring a di-Thioeno[3,2-b] ThioenoIndeno[1,2-b] Fluorene (TTIF) backbone as the donor component.
View Article and Find Full Text PDFWant 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!