We report on the development of a 250-MHz 234 nm deep-ultraviolet pulse source based on a flexible wavelength-conversion scheme. The scheme is based on a frequency-doubled optical parametric oscillator (FD-OPO) together with a cascaded frequency conversion process. We use a χ nonlinear envelope equation to guide the design of an intra-cavity OPO crystal, demonstrating a flexible broadband tunable feature and providing as high as watt-level of a frequency-doubled signal output centered at 850 nm, which is served as an input wave for the cascaded frequency conversion process. As much as 3.0 mW of an average power at 234 nm is obtained, with an rms power stability of better than 1% over 20 minutes. This deep-ultraviolet pulse laser source can be used for many applications in quantum optics and for direct laser cooling of Al ion clocks.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.421684 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
First-principles study of electron dynamics of MoS2 under femtosecond laser irradiation from deep ultraviolet to near-infrared wavelengths.
J Chem Phys
December 2024
State Key Laboratory of Precision Measuring Technology and Instruments, Laboratory of Micro/Nano Manufacturing Technology (MNMT), Tianjin University, Tianjin 300072, China.
Article Synopsis
- The study used time-dependent density functional theory to analyze how MoS2 (a semiconductor material) reacts to laser pulses, focusing on factors like laser wavelength, intensity, and polarization.
- Findings revealed that the way MoS2 absorbs energy changes at different laser intensities, particularly distinguishing between infrared (IR) and ultraviolet (UV) lasers.
- The research has important implications for improving MoS2 photodetectors, especially in terms of their performance and durability when exposed to powerful short-wavelength lasers.
Highly uniform silicon nanopatterning with deep-ultraviolet femtosecond pulses.
Nanophotonics
September 2024
CIC nanoGUNE BRTA, Donostia-San Sebastian, Spain.
Article Synopsis
- The use of nanophotonic methods for controlling photon-electron interactions is gaining interest in the particle accelerator field, with silicon-based integrated dielectric laser acceleration (DLA) emerging as a promising option.
- The study demonstrates a method using deep ultraviolet (DUV) ultrafast laser excitation to create silicon nanostructures over large areas, achieving features smaller than the diffraction limit.
- The technique results in highly uniform, high aspect-ratio structures, with notable periodicity and intricate 2D features, making it a simple and cost-effective approach for efficient silicon nanostructure production.
Laser-Assisted Field Evaporation of Chromia with Deep Ultraviolet Laser Light.
Microsc Microanal
November 2024
Department of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden.
In this work, samples of chromia (Cr2O3) scale have been prepared for atom probe tomography and field evaporated with deep ultraviolet laser light (258 nm wavelength). The investigated range of laser energies spans more than three orders of magnitude between 0.03 and 90 pJ.
View Article and Find Full Text PDFDeep Ultraviolet Excitation Photoluminescence Characteristics and Correlative Investigation of Al-Rich AlGaN Films on Sapphire.
Nanomaterials (Basel)
November 2024
Southern Polytechnic College of Engineering and Engineering Technology, Kennesaw State University, Marietta, GA 30060, USA.
AlGaN is attractive for fabricating deep ultraviolet (DUV) optoelectronic and electronic devices of light-emitting diodes (LEDs), photodetectors, high-electron-mobility field-effect transistors (HEMTs), etc. We investigated the quality and optical properties of AlGaN films with high Al fractions (60-87%) grown on sapphire substrates, including AlN nucleation and buffer layers, by metal-organic chemical vapor deposition (MOCVD). They were initially investigated by high-resolution X-ray diffraction (HR-XRD) and Raman scattering (RS).
View Article and Find Full Text PDFDiffracting molecular matter-waves at deep-ultraviolet standing-light waves.
Phys Chem Chem Phys
November 2024
University of Vienna, Faculty of Physics, VDS, VCQ, Boltzmanngasse 5, 1090 Vienna, Austria.
Article Synopsis
- Matter-wave interferometry with molecules showcases a key quantum phenomenon and has potential for advanced measurements in physical chemistry.
- A major challenge is developing efficient beam splitting methods that can work with a variety of particles.
- This research focuses on using intense deep-ultraviolet light to better understand interactions that could lead to new techniques in protein interferometry and enhanced sensing of molecular properties.
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!