We present measurements of relative intensity noise versus various levels of optical feedback for 1.3 μm quantum dot lasers epitaxially grown on silicon for the first time. A systematic comparison is made with heterogeneously integrated 1.55 μm quantum well lasers on silicon. Our results indicate up to 20 dB reduced sensitivity of the quantum dot lasers on silicon compared to the quantum wells.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.25.009535 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Advancing dynamic quantum crystallography: enhanced models for accurate structures and thermodynamic properties.
IUCrJ
January 2025
Faculty of Chemistry, University of Warsaw, Pasteura 1, Warsaw, 02-093, Poland.
X-ray diffraction (XRD) has evolved significantly since its inception, becoming a crucial tool for material structure characterization. Advancements in theory, experimental techniques, diffractometers and detection technology have led to the acquisition of highly accurate diffraction patterns, surpassing previous expectations. Extracting comprehensive information from these patterns necessitates different models due to the influence of both electron density and thermal motion on diffracted beam intensity.
View Article and Find Full Text PDFEnabling controllable time-dependent phosphorescence in carbonized polymer dots based on chromophore excited triplet energy level modulation by ionic bonding.
Angew Chem Int Ed Engl
January 2025
Department of Chemistry, College of Sciences, Northeastern University, No.3-11 Wenhua Road, Heping District, Shenyang, 110819, P. R. China.
Time-dependent phosphorescence color (TDPC) materials are highly attractive for realizing multitiered dynamic information encryption and anti-counterfeiting. It's extremely challenging to modulate puzzle of multiple luminescence species and understand the intrinsic mechanism. Herein, we demonstrate a novel and synthesize-friendly strategy to develop a high contrast TDPC carbonized polymer dots (CPDs) with adjustable lifetime and quantum yields.
View Article and Find Full Text PDFAssociation of Cumulative Systolic Blood Pressure With Left Atrial Function in the Setting of Normal Left Atrial Size: The Atherosclerosis Risk in Communities (ARIC) Study.
J Am Soc Echocardiogr
September 2024
Cardiovascular Division and Lillehei Heart Institute, Department of Medicine, University of Minnesota Medical School, Minneapolis Minnesota.
Article Synopsis
- Lower left atrial (LA) function is linked to higher risk of cardiovascular issues, and this study explores how cumulative systolic blood pressure (cSBP) impacts LA strain in older adults with normal LA size.
- The research included 3,859 participants with data collected from 1987 to 2013, finding that each 10 mm Hg increase in cSBP correlates with a slight reduction in LA function, although these effects diminish when considering left ventricular (LV) health.
- The study concludes that while higher cumulative blood pressure is associated with lower LA strain, especially in those with normal LV function, the primary impact seems to stem from blood pressure's influence on heart muscle function.
Enhanced dye removal using montmorillonite modified with graphene quantum dots in sustainable salep nanocomposite hydrogel.
Sci Rep
March 2024
Department of Organic Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran.
This research investigated the utilization of graphene quantum dot/montmorillonite (GQD/MMT) as an effective nanofiller in a hydrogel composed of salep biopolymer. The semi-IPN hydrogel was synthesized using salep as the substrate, acrylamide (AAm) as the monomer, ammonium persulfate (APS) as an initiator in free radical polymerization, and N,N'-methylenebisacrylamide (MBA) as a cross-linking agent. The hydrogels were applied to remove safranin (SA), methylene blue (MB), crystal violet (CV), methyl green (MG), congo red (CR), and malachite green (MG) dyes from the water.
View Article and Find Full Text PDFIonized acrylamide-based copolymer / terpolymer hydrogels for recovery of positive and negative heavy metal ions.
PLoS One
March 2024
Department of Applied Quantum Physics and Nuclear Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan.
Article Synopsis
- The study looked at a special substance that can grab both positive and negative ions from liquids, using a polymer made from acrylamide and two other materials.
- They tested how these materials work to capture heavy metals like nickel and copper in different acidic or basic conditions.
- The results showed that the best way to catch the positive ions is by using more of one material, while capturing the negative ions works better with more of the second material, and they need to adjust these amounts to be effective.
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!