Results 21 to 30 of about 239,845 (311)
Research on Adjustable Ring-Mode Fiber Signal Combiner
Photonics, 2023 Nowadays, fiber laser has been widely used in industrial processing, especially in welding, cutting and other fields, and the appearance of adjustable ring-mode fiber laser improves effectively the quality of processing.
Min Fu +5 more
doaj +1 more source
M2 factor for evaluating fiber lasers from large mode area few-mode fibers
Frontiers in Physics, 2023 Evaluating the laser quality accurately is one of the most important and fundamental physical issues for laser sources, and the beam quality of lasers from the large mode area few-mode fibers have been haunted by the presence of high order mode for many ...
Rumao Tao +7 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
openaire +2 more sources
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
doaj +1 more source
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
doaj +1 more source
Optical trapping with superfocused high-M2 laser diode beam [PDF]
, 2015 Many applications of high-power laser diodes demand tight focusing. This is often not possible due to the multimode nature of semiconductor laser radiation possessing beam propagation parameter M2 values in double-digits.
Kuchinskii, V. I. +36 more
core +1 more source
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
openaire +4 more sources
Ion-beam-assisted fabrication and manipulation of metallic nanowires [PDF]
, 2015 Metallic nanowires (NWs) are the key performers for future micro/nanodevices. The controlled manoeuvring and integration of such nanoscale entities are essential requirements.
Verma, H.C. +6 more
core +1 more source