Results 11 to 20 of about 5,854 (216)
High Power Laser Science and Engineering, 2023 The spatial distribution of beams with orbital angular momentum in the far field is known to be extremely sensitive to angular aberrations, such as astigmatism, coma and trefoil. This poses a challenge for conventional beam optimization strategies when a
J. B. Ohland +6 more
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Analysis on Beam Quality of Solid-State Tube MOPA System With Zigzag Beam Path
IEEE Photonics Journal, 2019 All-solid-state tube lasers (ASSTLs) with zigzag beam path combine the attractive properties of rod, slab, and disk lasers. However, the analysis on the beam quality of tube lasers is rarely reported.
Boyu Tian +4 more
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Research on beam quality control technology of 2 μm antimonide semiconductor laser
Frontiers in Physics, 2022 Antimonide semiconductor laser is a new type of laser with unique advantages in the 2 μm band. However, employing FP cavities causes multiple transverse modes to degrade beam quality despite achieving higher power output.
Sensen Li +9 more
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The beam quality parameter of spirally polarized beams [PDF]
Journal of Optics A: Pure and Applied Optics, 2008 Starting from the expression for the quality parameter of a superposition of two general fields, the case of beams that can be written in terms of the polarization basis introduced by Gori is investigated. Different types of this class of beam are studied and compared. In particular, spirally polarized beams are considered.
Piquero Sanz, Gemma María +1 more
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60% Efficient Monolithically Wavelength-Stabilized 970-nm DBR Broad-Area Lasers
IEEE Photonics Journal, 2022 Progress in epitaxial design is shown to enable increased optical output power Popt and power conversion efficiency ηE and decreased lateral far-field divergence angle in GaAs-based distributed Bragg reflector (DBR) broad-area (BA) diode lasers ...
Paul Crump +5 more
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Beam Quality of a Nonideal Atom Laser [PDF]
Physical Review Letters, 2006 We study the propagation of a non-interacting atom laser distorted by the strong lensing effect of the Bose-Einstein Condensate (BEC) from which it is outcoupled. We observe a transverse structure containing caustics that vary with the density within the residing BEC.
Riou, Jean-Félix +6 more
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Beam Control in an Intracavity Frequency-Doubling Semiconductor Disk Laser
Applied Sciences, 2019 In this paper, we have demonstrated a 1.3 W green laser using a V-shaped intracavity frequency doubling 1036 nm semiconductor disk laser. The beam quality of the fundamental and second harmonic generation (SHG) laser is investigated.
Guanyu Hou +9 more
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Vector quality measure for vector beams [PDF]
SPIE Proceedings, 2016 Vector beams are spatial modes of light with spatially variant polarization states in the transverse profile. Over the years, vector beams have found their way into plenty of applications ranging from material processing and lithography to electron acceleration and particle trapping.
Sroor, Hend +4 more
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IEEE Photonics Journal, 2021 The Kerr self-focusing and group-velocity dispersion (GVD) effects play important roles when a high-power pulsed laser beam propagates from the ground through the nonlinear and dispersive atmosphere to space orbits.
Yu Deng +5 more
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BEAM QUALITY MEASUREMENTS IN DIAGNOSTIC ROENTGENOLOGY [PDF]
American Journal of Roentgenology, 1971 Our work to date indicates that the 20th value layer in either aluminum or unit density material can, for one anatomic area of fixed section thickness, be used to predict exposures over a range of kilovoltages[See Figure in the PDF File]using a single type of roentgen-ray unit.
E D, Trout, J P, Kelley
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