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beam spot size

Mode-Master-Whitepaper FORMFIRST.pdf

Mode-Master-Whitepaper FORMFIRST.pdf


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Actual Spot Size at Focus
Similarly, M2 can be applied to the formula used to
calculate the size of a focused Gaussian beam. The
equation for calculating the spot size of a perfect
Gaussian beam focused by an aberration free lens is

2011-Diode-Laser-Modules-and-Pattern-Generators-Catalog.pdf

2011-Diode-Laser-Modules-and-Pattern-Generators-Catalog.pdf

spot at the target for broader
illumination.
· Adjust the beam so that it converges to create a
specific focus spot size at a certain working distance.
· Adjust the beam so that the beam waist is at a
particular point in space.
· Adjust the beam to move the focus spot

COHR OBIS CellX DS 0117 3.pdf

COHR OBIS CellX DS 0117 3.pdf

…1319845 1319846
Wavelength Range (nm) 400 to 700
Beam Profile at Focus (Vertical, Horizontal) Gaussian, Gaussian
Focus Spot Size Vertical (µm) (1/e2) 10 ±2 15 ±2
Focus Side-lobes Vertical (% of peak) <10
Focus Spot Size Horizontal1 (µm) (1/e2) Adjustable from 60 ±15 to 80…

COHERENT LMC 2016-2017 Catalog .pdf

COHERENT LMC 2016-2017 Catalog .pdf

…ModeMaster Beam Propagation Analyzer
established a new laser beam quality parameter, M2, which
has now become an ISO measurement standard. M2 describes
how close to"perfect-Gaussian"a laser beam is, and can be
used to predict the beam size, beam shape and the smallest
spot

SST 2017-09 Laser Marking.pdf

SST 2017-09 Laser Marking.pdf


Moreover, data
matrix codes can be quite small, with cell sizes of only
125 µm or even less. Since the spot size of the focused
laser beam must thus be much smaller than the cell
size, the final spot diameter must be significantly less
than 100 µm.
Defective…

COHR GeoLasHD DS 0318 4.pdf

COHR GeoLasHD DS 0318 4.pdf

…193
Spot Sizes (µm) 2 to 160
Optical Resolution (µm) 1
Beam Homogeneity (%) (1 sigma) 1
Maximum Fluence (J/cm2) 50
Pulse Stability (%, rms) 1
Repetition Rate (Hz) 1 to 10 (option: 1 to 100)
X,Y-Drive Min. Step Size (µm) 0.1
Z-Focus Min. Step Size (µm) 0.1

COHR ULN DS 1117 2.pdf

COHR ULN DS 1117 2.pdf

…ages. · ULN does not change the spatial qualities of the laser beam, so the beam can be focused to the same spot size, profile and shape. FEATURES · Ultra-low noise (ULN) · RMS noise <0.06% for bandwidths of 10 Hz to 10 MHz · Circular beam · No mode-hop noise · No warm-up period · Wavelength 635 nm…

Laser Focus World - June 2018

Laser Focus World - June 2018

Beam quality
Beam mode quality directly affects focused spot size, which in turn determines
system optical efficiency. This is because
a confocal microscope works by focusing
the laser to a small spot or spots in the
sample plane and imaging fluorescence
from this spot

COHR WhitePaper High Repetition Rate USP Lasers Improve OLED Cutting Results.pdf

COHR WhitePaper High Repetition Rate USP Lasers Improve OLED Cutting Results.pdf

…This clearly demonstrates the improvement in cut quality with
decreasing wavelength.
In addition to these factors, a laser must produce a high quality, Gaussian beam, which is usually
focused down to a spot size of 10 - 20 µm at the workpiece in order to yield a sharp and clean

The PCB Magazine, November 2015

The PCB Magazine, November 2015

…limitations on the smallest via diameter it can reach. One limit is caused by light diffraction. Specifically, the smallest focused spot size to which a laser beam can be focused is directly related to its wavelength. Longer (e.g., far infrared) wavelengths, cannot be focused as finely as visible…

COHR ExcimerCatalog2019.pdf

COHR ExcimerCatalog2019.pdf

…193
Spot Sizes (µm) 2 to 160
Optical Resolution (µm) 1
Beam Homogeneity (%) (1 sigma) 1
Maximum Fluence (J/cm2) 50
Pulse Stability (%, rms) 1
Repetition Rate (Hz) 1 to 20 (option: 1 to 100)
X,Y-Drive Min. Step Size (µm) 0.1
Z-Focus Min. Step Size (µm) 0.1

LIT Lasers-LED NO1-Spatial-Brightness 1014.pdf

LIT Lasers-LED NO1-Spatial-Brightness 1014.pdf

…these desired spot sizes. This is because the output of a typical laser is a well-behaved, narrow, low-divergence beam. Such a beam behaves like an ideal, true point source. This means that all the source output can be collected and focused into the precise spot size needed by the application,…

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