…(intensity profile). Beam Profile vs. Beam Propagation Beam profilers measure the spatial intensity distribution of a laser beam. However, no matter how accurately and diligently a profile is measured, this information does not predict the intensity distribution elsewhere along the beam path. If the…
…II beam diagnostics cameras use laser-grade
1/2-inch and 2/3-inch CCD sensors for detection and analysis of
laser beam profiles from ~150 micron to 4 mm in diameter (1/2-inch
camera) and ~150 micron to 6 mm in diameter (2/3-inch camera).
The 1/2-inch model is a 12-bit camera with…
…these reflected beams in a configuration called a Mach-Zehnder interferometer. The recombined
beam is then expanded and viewed using a CCD camera.
If the OPSL chip remains flat with no thermal lensing, then the image at the camera would be
uniform across its profile. Conversely, any…
Beams with a very small divergence, i.e. with an almost constant beam diameter over a significant propagation
distance are generally called "collimated beams".
To measure divergence correctly with a camera based beam analyzer (profiler), a lens or confocal mirror…
…a line beam with
a long-axis homogeneity of below 2% of the two-sigma
confidence interval is achieved along the entire line length.
Optionally, the LLO systems feature a CCD (Charge Coupled Device) beam profiler camera for measuring the line
beam profile at the substrate…
Beam Diagnostic Accessories
Laser Grade Attenuation Optics for Cameras 112
Attenuation Optics for Cameras 113
Extreme-UV Beam Intensity Profile Optics 114
Knife-Edge Based Beam Profilers 115-116
…camera-based beam-profiler systems as well as knife-edge-based scanning systems. The
cameras are targeted at customers wanting fast analysis of the
spatial profile of pulsed or CW laser beams; they can often be
found in production lines, incoming/outgoing inspection, and
…you to predict how the beam will propagate, how it will
look like elsewhere along the beam path and, how well it can get focused.
7 Different types of beam profilers at your choice.
Both, camera-based and knife edge-scanners are used for beam profile measurements. Each has
…contour and large parts Low requirements on beam quality Online process control via pyrometer Accessories: Fixed Optics to be used with Compact-Evolution series easy to integrate suitable for 3D contoure welding and large parts Optional coaxial camera for positioning Optional online process control…
flat-top profile, with intensity that rises quickly to a fixed
level and is then flat across the beam.
Laser profiles are normally Gaussian, with optics and
apertures used to transform this into a flat top. For lowerpower lasers, a camera or a scanning-slit profiler is used
…Beam Profiling System LaserCam-HR II is our second generation of digital USB 2.0 bus-powered, high-resolution, large-area cameras. The LaserCam-HR II family includes 1/2-inch and 2/3-inch format CCD cameras that provide greater dynamic range and lower noise than the previous generation. The cameras…
…beam is coincident
with a TEM
(Gaussian profile) beam of
a different wavelength. The donut beam
depletes the population of excited fluorophores via stimulated emission. This beam
shape serves to constrict the volume of
fluorophores that the TEM