1.5-mum emissions from Nd:YAG, Nd:YVO(4), and LiNdP(4) O>(12) microchip lasers pumped by laser diodes have been observed. These coherent emissions are attributed to the effect of high-energy modified lattice vibration owing to the existence of Nd ions as well as to stimulated intracavity Raman scattering enhanced by the microchip configuration. A four-wave mixing process involving two lasing fields and a Stokes field was identified as the generator of new adjacent 1.5-mu;m emission.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/ol.25.000646 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A Ratiometric Fluorescence Method Based on PCN-224-DABA for the Detection of Se(IV) and Fe(III).
Biosensors (Basel)
December 2024
School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China.
In this study, 3,4-diaminobenzoic acid (DABA) was introduced into the porphyrin metal-organic framework (PCN-224) for the first time to prepare a ratiometric fluorescent probe (PCN-224-DABA) to quantitatively detect ferric iron (Fe(III)) and selenium (IV) (Se(IV)). The fluorescence attributed to the DABA of PCN-224-DABA at 345 nm can be selectively quenched by Fe(III) and Se(IV), but the fluorescence emission peak attributed to tetrakis (4-carboxyphenyl) porphyrin (TCPP) at 475 nm will not be disturbed. Therefore, the ratio of I/I with an excitation wavelength of 270 nm can be designed to determine Fe(III) and Se(IV).
View Article and Find Full Text PDFEnhancement of Growth and Lipid Production in Microalgae Using Aggregation-Induced Emission Based Luminescent Material for Sustainable Food and Fuel.
Chem Asian J
January 2025
College of Science and Engineering, Flinders University, South Australia, 5042, Bedford Park, Australia.
Aggregation-Induced Emission (AIE) based nanomaterials are progressively gaining momentum owing to their evolvement into an interdisciplinary field ranging from biomass and biomolecule yield to image-guided photodynamic therapy. This study focuses on a novel strategy to enhance growth, lipid accumulation, and in vivo fluorescence visualisation in green microalgae Chlamydomonas reinhardtii using AIE nanoparticles to quantify radical changes. The absorption of AIE photosensitiser (PS), TTMN (CHNS[M]) was recorded from 420 to 570 nm with a peak at 500 nm, and the emission ranged from 550 to 800 nm with a peak at 650 nm.
View Article and Find Full Text PDFCarbazolyl-Modified Neutral Ir(III) Complexes for Efficient Detection of Picric Acid in Aqueous Media.
Sensors (Basel)
June 2024
State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Dalian 116024, China.
Based on the electron-deficient property of picric acid (PA), two neutral Ir(III) complexes and modified with the electron-rich carbazolyl groups were synthesized and characterized. Both and exhibit aggregation-induced phosphorescence emission (AIPE) properties in THF/HO. Among them, is extremely sensitive for detecting PA with a limit of detection of 0.
View Article and Find Full Text PDFModelling Gd-diamond and Gd-SiC neutron detectors.
Appl Radiat Isot
October 2024
Space Research Group, Sch. of Mathematical and Physical Sciences, University of Sussex, Falmer, Brighton, BN1 9QT, UK; Sch. of Engineering, University of Warwick, Coventry, CV4 7AL, UK.
A custom Monte Carlo (MC) computer model was developed to simulate thermal neutron absorption in, and subsequent photon and electron emission from, natural Gd with a view to using the material as a neutron conversion layer for neutron detectors. The MC code also modelled photon and electron detection with two dissimilar detectors: a thick (500 μm) single crystal diamond detector; and a thin (5.15 μm) commercial off the shelf (COTS) 4H-SiC photodiode detector.
View Article and Find Full Text PDFStudy on quantitative generation technology of bio-fluorescence calibration particles based on inkjet generator.
Sci Total Environ
October 2024
Environmental Metrology Center, National Institute of Metrology, Beijing 100029, China.
Accurate measurements are critical for timely early warning and effective prevention of epidemics due to the continuing impact of bioaerosols on human health. In recent years, researchers have been focused on developing and calibrating online monitoring instruments. However, there is still a lack of laboratory-generated standard aerosol samples suitable for calibration.
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!