By use of a self-seeding technique, energetic nanosecond UV pulse trains of adjustable characteristics (number of pulses, pulse energy, interpulse delay) can be easily produced from an oscillator-amplifier XeCl laser system.

Download full-text PDF

Source
http://dx.doi.org/10.1364/ao.40.006337DOI Listing

Publication Analysis

Top Keywords

nanosecond pulse
8
pulse trains
8
simple method
4
method generate
4
generate nanosecond
4
trains self-seeding
4
self-seeding technique
4
technique energetic
4
energetic nanosecond
4
trains adjustable
4

Similar Publications

Large energy single-frequency nanosecond (ns) near-infrared light source is an essential device in the field of the remote chemical analysis based on the laser-induced breakdown spectroscopy (LIBS). In this paper, a large energy single-frequency ns 824 nm light source with high repetition rate is presented, which is generated from a seed-injection locked optical parametric oscillator (OPO). By optimizing the spot radius of the pump laser and the mode-matching between the pump laser and signal light, the optical parametric generation (OPG) process is effectively eliminated.

View Article and Find Full Text PDF

The coupling effect of gamma-ray radiation and 532 nm nanosecond laser radiation on optical coatings and substrates was investigated. Fused silica and S-BSL7 glass with 532 nm high reflectivity (HR) coatings were irradiated using Co gamma-ray source at a dose rate of 1 Gy/s for a total dose of 1-500 kGy. After irradiation, the samples were subjected to raster scan testing using a laser with a pulse width of approximately 8.

View Article and Find Full Text PDF

A Cu(I)-Based MOF with Nonlinear Optical Properties and a Favorable Optical Limit Threshold.

Nanomaterials (Basel)

January 2025

Key Laboratory of Organic Integrated Circuit, Tianjin Key Laboratory of Molecular Optoelectronic Sciences & Ministry of Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China.

The exploitation of high-performance third-order nonlinear optical (NLO) materials that have a favorable optical limit (OL) threshold is essential due to a rise in the application of ultra-intense lasers. In this study, a Cu-based MOF (denoted as Cu-bpy) was synthesized, and its third-order NLO and OL properties were investigated using the Z-scan technique with the nanosecond laser pulse excitation set at 532 nm. The Cu-bpy exhibits a typical rate of reverse saturable absorption (RSA) with a third-order nonlinear absorption coefficient of 100 cm GW and a favorable OL threshold of 0.

View Article and Find Full Text PDF

[Vacuum ultraviolet laser dissociation and proteomic analysis of halogenated peptides].

Se Pu

February 2025

CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.

Chemical modifications are widely used in research fields such as quantitative proteomics and interaction analyses. Chemical-modification targets can be roughly divided into four categories, including those that integrate isotope labels for quantification purposes, probe the structures of proteins through covalent labeling or cross-linking, incorporate labels to improve the ionization or dissociation of characteristic peptides in complex mixtures, and affinity-enrich various poorly abundant protein translational modifications (PTMs). A chemical modification reaction needs to be simple and efficient for use in proteomics analysis, and should be performed without any complicated process for preparing the labeling reagent.

View Article and Find Full Text PDF

Excited-State Proton Transfer Dynamics of Cyanonaphthol in Protic Ionic Liquids: Concerted Effects of Basicity of Anions and Alkyl Carbons in Cations.

J Phys Chem B

January 2025

Department of Applied Chemistry, Graduate School of Science and Engineering, Doshisha University, Kyotanabe, Kyoyo 610-0321, Japan.

Excited-state proton transfer (ESPT) reactions of 5-cyano-2-naphthol (5CN2) and 5,8-dicyano-2-naphthol (DCN2) were investigated in protic ionic liquids (PILs) composed of quaternary ammonium (NH) ( = 2, 4, or 8) and hexanoate (CHCOO) using time-resolved fluorescence spectroscopy. The effects of the number of alkyl carbons in the cation and the basicity of the anion on the reaction yield and dynamics were examined. In a series of [NH][CHCOO], fluorescence from the hydrogen-bonding complex (AHBX) of a proton-dissociated form (RO) with a solvent acid in the electronic excited state was observed between the fluorescence bands of an acidic form (ROH) and an anionic form (RO) as in the case of [NH][CFCOO] (Fujii et al.

View Article and Find Full Text PDF

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!