A5055614654- Laser-Matter Interactions and Applications
- Advanced Fiber Laser Technologies
- Solid State Laser Technologies
- Laser-Plasma Interactions and Diagnostics
- Spectroscopy and Laser Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Fusion materials and technologies
- Spectroscopy and Quantum Chemical Studies
- Photonic Crystal and Fiber Optics
- Laser Design and Applications
- Magnetic confinement fusion research
- Nuclear Materials and Properties
- Surface Roughness and Optical Measurements
- Photorefractive and Nonlinear Optics
- Welding Techniques and Residual Stresses
- Optical Systems and Laser Technology
- Advanced Chemical Physics Studies
- Ion-surface interactions and analysis
- Semiconductor Quantum Structures and Devices
- Nuclear materials and radiation effects
- Meat and Animal Product Quality
- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- Photonic and Optical Devices
- Indigenous Studies and Ecology
Fusion for Energy
2014-2020
Institute of Photonic Sciences
2008-2012
University of Colorado Boulder
2011
Rutherford Appleton Laboratory
2005-2007
The Research Council
2006
Clemson University
1967
University of Illinois System
1967
We report on what is believed to be the first large-aperture and high-energy optical parametric chirped pulse amplification system. The system, based a three-stage amplifier, shows 25% pump-to-signal conversion efficiency of full 70 nm width seed spectrum. Pulse compression 84 fs achieved after indicates potential 300 TW power for 35 J amplified energy.
We present a novel mid-IR source based on optical parametric chirped pulse amplification (OPCPA) generating 96 fs pulses (9.0 cycles) at 3.2 mm with an energy of 1.2 microJ, repetition rate 100 kHz. The amplified spectrum supports minimum Fourier transform limited duration 45 fs, or 4.2 cycles. Our use OPCPA allows the direct few-cycle this wavelength, and is inherently scalable to higher energies. seed for system difference frequency generation (DFG) between two outputs same fibre laser:...
An all-optical and passively carrier-to-envelope-phase-stabilized (CEP-stabilized) optical parametric chirped pulse amplification (OPCPA) system is demonstrated with sub-250-mrad CEP stability over 11 min better than 100 mrad s. This achieved without any electronic stabilization loop for 160 kHz repetition rate in the few cycle regime.
We present a novel mid-infrared (mid-IR) source of ultrashort pulses applicable to wide range biological, spectroscopic, and strong-field physics investigations. The produces 67 fs at 3.2 microns, with energy 3.8 μJ 100 kHz repetition rate pulse-to-pulse RMS stability 0.7%. system is based on OPCPA, scalable in rate, provides platform for new generation mid-IR sources.
We report on the shortest pulses to date from a mid-IR optical parametric chirped pulse amplification: 67 fs duration with 3.8 μJ energy operating at 3.2 μm. The system is all solid state and diode pumped operates 100 kHz unprecedented power stability of 0.75%rms over 30 min.
We generate self-carrier-to-envelope phase-stable, 630 μJ pulses, centered at 2.1 μm, with 42 fs (6 cycle) duration based on collinear optical parametric amplification in BiB(3)O(6) 3 kHz. These pulses are generated through a traveling wave amplifier scheme, and the bandwidth supports 28 (4 pulse duration. Carrier-to-envelope phase stability was measured to be 410 mrad over 10 min or 260 35 s.
Numbers of Bacteria in Frozen Food Stored at Several Temperatures Samuel C. Prescott, Philip K. Bates, and Matthew E. Highlands CopyRight*Read before the Food, Drugs Nutrition Section American Public Health Association Sixtieth Annual Meeting Montreal, Canada, September 13, 1931. https://doi.org/10.2105/AJPH.22.3.257 Published Online: August 29, 2011
We demonstrate the validity of Shackled-frequency-resolved-optical-gating technique for complete characterization, both in space and time, ultrashort optical pulses that present strong angular dispersion. Combining a simple imaging grating with Hartmann-Shack sensor standard frequency-resolved-optical-gating detection at single spatial position, we are able to retrieve full spatiotemporal structure tilted pulse.
We describe a second-harmonic-generation frequency-resolved optical gating measurement device optimized for the characterization of few-cycle pulses in mid-IR spectral range. The system has temporal range 100 ps with resolution 0.12 fs, and it is capable measuring as short 1.5 cycles (15 fs) at 3 microm. Through interchangeable beam splitters detectors covers wavelength from 800 nm to 5 microm up 0.5 cm(-1) resolution. demonstrate richly featured 3.2 pulse 9.6 cycle duration, recovering main...
We demonstrate efficient optical parametric amplification and generation in a gas-filled hollow-core fiber of near-infrared pulses, peaked at 1.4 microm wavelength, with 5 microJ energy 45 fs duration the output. Numerical simulations confirm that OPA is phase matched through excitation higher-order modes.
We study ionization of molecules by an intense laser field over a broad wavelength regime, ranging from 0.8 to 1.5 μm experimentally and 0.6 10 theoretically. A reaction microscope is combined with optical parametric amplifier achieve yields in the near-infrared regime. Calculations are done using strong-field S-matrix theory agreement found between experiment theory, showing that many suppressed compared atoms identical potentials at wavelengths around μm, but not longest (10 μm). This due...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectrographic Characteristics of Vitamin A MaterialsRonald L. McFarlan, Philip K. Bates, and Edward C. MerrillCite this: Ind. Eng. Chem. Anal. Ed. 1940, 12, 11, 645–647Publication Date (Print):November 1, 1940Publication History Published online1 May 2002Published inissue 1 November 1940https://pubs.acs.org/doi/10.1021/ac50151a004https://doi.org/10.1021/ac50151a004research-articleACS PublicationsRequest reuse permissionsArticle...
We present a design for novel carrier to envelope phase stable optical parametric chirped pulse amplification source in the mid-infrared. calculate of 3.1 microm seed pulse, generated via DFG from two-colour fibre laser, using fully three dimensional OPCPA code. combine this with ray-tracing code model compression grating compressor and deformable mirror programmable compensation. The simulation models complete system based on FROG measurements commercially available ensuring is realistic....
We present three-dimensional simulations of optical-parametric chirped-pulse amplification stages for a few-cycle petawatt-class laser. The take into account the effects depletion, diffraction, walk-off, quantum noise, and nonlinear refractive index (n(2)). In absence n(2) effects, we show these can generate 3.67J pulses supporting 4fs transform-limited pulse durations. Adding to simulation, energy output is reduced by ~11% bandwidth narrows ~129nm, increasing Fourier limit ~17.5%.
We demonstrate that multiple spectral-shearing interferometry increases the precision and accuracy of measurements spectral phase a complex pulse (time-bandwidth product = 125) arising from self-phase modulation in gas filled capillary. verify measured interferometric is accurate to 0.1 rad across full bandwidth by checking consistency between phases each individual shear measurement. The extracting parameters (group delay dispersion, duration peak intensity) for single were verified better...
An acousto-optic pulse shaper has been used to characterize few-cycle pulses generated in a hollow-core fiber. A grism pair precompensates for the dispersion of crystal, allowing full pulse-shaping window be replica generation rather than self-compensation. 9.4 fs was measured, shortest ever measured with an shaper, our knowledge.
We observe ring structures in high-order harmonics generated the loose focusing geometry of a semi-infinite gas cell. Phase matching and absorption considerations indicate that measured signal is restricted to exit plane. therefore attribute structure interferences single-atom response transverse plane interaction region. Calculations using stationary phase approximation were used analyze contributions long short trajectories, respectively, confirm our experimental findings. The simple setup...
Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text F. Silva, P. K. Bates, A. Esteban-Martin, M. Ebrahim-Zadeh, and J. Biegert, "High average-power, self-CEP stable few-cycle pulses at 2.1 µm through collinear OPA in BiB3O6," Research Optical Sciences, OSA Technical Digest (Optica Publishing Group, 2012), paper HT1C.6. Export BibTex Endnote (RIS) HTML Plain alert Save article