Development and beam test of a continuous wave radio frequency quadrupole accelerator

PN Ostroumov, B Mustapha, A Barcikowski… - … Accelerators and Beams, 2012 - APS
… An output matcher is needed to produce an axially symmetric beam exiting the RFQ to
match the beam to a subsequent solenoid-based focusing lattice. Instead of the more standard …

105 W continuous-wave diode-pumped Tm: YAP slab laser with high beam quality

S Mi, J Li, D Wei, K Yang, C Yang, B Yao, X Duan… - Optics & Laser …, 2021 - Elsevier
… We demonstrated a high power and good beam quality continuous-wave (CW) Tm:YAP
slab … The pump beam was collimated and focused by a coupling system, which included two …

Design aspects of focal beams from high-intensity arrays

DN Stephens, DE Kruse, S Qin… - IEEE transactions on …, 2011 - ieeexplore.ieee.org
… count ranging from 64 to 1024 and continuous wave frequency of 1.5 MHz. First, we show
that a 50% spherical annulus produces focus beam side lobes which decay as a function of …

Efficient continuous wave accelerating structure for ion beams

PN Ostroumov, AS Plastun, N Bultman, D Morris… - … Accelerators and Beams, 2020 - APS
… The first rebuncher is required to create a time focus of the beam at the location of the
stripper to minimize longitudinal emittance growth due to energy straggling. This rebuncher is …

Consequences of the angular spectrum decomposition of a focused beam, including slower than c beam propagation

G Gouesbet, JA Lock - Journal of Quantitative Spectroscopy and Radiative …, 2016 - Elsevier
beam, considered in the present paper, that distinguishes it from other electromagnetic
waves … in the long-wavelength limit, is that a beam propagates in one direction, or in a narrow …

Evaluation of weld porosity in laser beam seam welds: Optimizing continuous wave and square wave modulated processes

J Norris, M Perricone, RA Roach, K Faraone… - International Laser …, 2007 - pubs.aip.org
… Travel speed and laser beam power largely control the way these forces are balanced, as
well as welding mode (Continuous Wave or Square Wave) and shielding gas type [1]. A study …

Thermal modeling of continuouswave end‐pumped solid‐state lasers

ME Innocenzi, HT Yura, CL Fincher… - Applied Physics Letters, 1990 - pubs.aip.org
… the thermal focusing due to … focusing length comparable to the cavity length of a typical
diode end-pumped laser. In endeavoring to obtain higher output powers from continuous-wave (…

Trackless lesions in nervous tissues produced by high intensity focused ultrasound (high-frequency mechanical waves).

R Warwick, J Pond - Journal of anatomy, 1968 - ncbi.nlm.nih.gov
… Diagrams of the geometry of the focused beam from a 1 Mc projector, whose concave …
thermocouple scan across the beam axis in the focal plane of a 3-025 Mc/s beam. Note the …

Wavefront reversal of focused beams (theory of stimulated Brillouin backscattering)

NB Baranova, BY Zel'dovich - Soviet Journal of Quantum …, 1980 - iopscience.iop.org
focused beams neglecting the influence of the scattered field on the pump wave not only
results in narrowing of the WFR wave … increase with distance from the beam axis. An analysis is …

Extended depth of field in continuous-wave terahertz computed tomography based on Bessel beam

D Wang, B Li, L Rong, Z Xu, Y Zhao, J Zhao… - Optics …, 2019 - Elsevier
… The direction of the THz beam is changed by a 50.8 mm diameter gold-coated … beam is
focused using the gold-coated off-axis parabolic mirror (PM 5 ). The radius of the focused beam