In this paper we demonstrate the use of NIR femtosecond filament for improving the generation of second harmonic using a type I BBO crystal. Using this method the beam propagation factor (M(2)) of the second harmonic was improved significantly; which led to enhancement of the attainable SH intensity by up to two orders of magnitude. This method can be beneficial for applications demanding high intensities, small spot size or long interaction lengths.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/oe.17.006451 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Symmetry Breaking: Case Studies with Organic Cage-Racemates.
Acc Chem Res
January 2025
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
ConspectusSymmetry is a pervasive phenomenon spanning diverse fields, from art and architecture to mathematics and science. In the scientific realms, symmetry reveals fundamental laws, while symmetry breaking─the collapse of certain symmetry─is the underlying cause of phenomena. Research on symmetry and symmetry breaking consistently provides valuable insights across disciplines, from parity violation in physics to the origin of homochirality in biology.
View Article and Find Full Text PDFThe First Kleinman-type Second-Harmonic Generation Circular Dichroism On/Off Switchable Ferroelectrics.
Angew Chem Int Ed Engl
January 2025
Nanchang University, College of Chemistry, No.999 Xuefu Road, Honggutan New District, 330031, Nanchang, CHINA.
Chiral ferroelectrics have recently received considerable interest due to their unique chiroptical properties. They can adopt Kleinman symmetry second-harmonic generation (SHG)-active chiral-polar point groups in the ferroelectric phase while Kleinman symmetry SHG-inactive chiral-nonpolar point groups in the paraelectric phase, providing a great opportunity to realize on/off switching of SHG circular dichroism (SHG-CD) response. However, the SHG-CD effect was rarely explored in chiral ferroelectrics, and the on/off switchable SHG-CD has never been reported.
View Article and Find Full Text PDFInterplay between Two Structure Types in the Incommensurately Modulated ATaSe Compounds (A = Rb, Cs).
Inorg Chem
January 2025
Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States.
Incommensurately modulated crystals are a rare class of materials that are notoriously difficult to characterize properly. We have synthesized two new incommensurately modulated compounds, RbTaSe and CsTaSe, based on the MQ (M = Nb, Ta; Q = S, Se) unit using high-temperature solid-state synthesis. Using superspace crystallography in combination with second harmonic generation measurements, we confirmed both materials to be noncentrosymmetric, falling into the superspace group 1(αβγ)0, while the basic cell suggests 2/.
View Article and Find Full Text PDFZonal Characteristics of Collagen Ultrastructure and Responses to Mechanical Loading in Articular Cartilage.
Acta Biomater
January 2025
Biomedical Engineering, College of Engineering, Mathematics and Physical Sciences, University of Exeter, UK. Electronic address:
The biomechanical properties of articular cartilage arise from a complex bioenvironment comprising hierarchically organised collagen networks within the extracellular matrix (ECM) that interact with the proteoglycan-rich interstitial fluid. This network features a depth-dependent fibril organisation across different zones. Understanding how collagen fibrils respond to external loading is key to elucidating the mechanisms behind lesion and managing degenerative conditions like osteoarthritis.
View Article and Find Full Text PDFDesigning rare earth borates as UV nonlinear optical crystals exhibiting strong second-harmonic generation responses.
Chem Commun (Camb)
January 2025
Tianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystal, Tianjin University of Technology, Tianjin 300384, China.
Two new rare earth borate NLO crystals, KNaSrYBO and RbBaLuBO, were successfully designed and synthesized, which feature NLO-active [BO] groups and [Y/LuO] polyhedra. They exhibit notably short UV absorption cutoff edges below 200 nm, wide band gaps exceeding 6.2 eV, and strong second-harmonic generation intensities that are comparable to KDP.
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!