…In addition, the CO laser's shorter
wavelength leads to a smaller focused
spot than that for a CO
2
laser, and/or a
larger depth of focus for the same given
spot size; a larger depth of focus leads to
a larger process window, allowing a larger
field of view…
--> Focusing Units These assemblies focus the parallel beam from the collimating unit onto the workpiece. The size of the focused spot and the depth of focus are given by the combination of collimating optics, focusing optics and beam quality. The focusing units come either with a fixed or a…
…along both axes Top-hat along both axes Top-hat along both axes Depth of Focus (µm) ±150 ±120 ±120 ±120 LineBeam Key Features 308 nm wavelength for high yield OLED and LCD polysilicon annealing Superior pulse stability and high depth of field to ensure a large process window Short and long axis…
…changes.
Figure 4 shows that the Coherent HyperRapid NX operating at 355 nm delivers a beam symmetry
of >90% over a depth of focus of more than 500 µm when focused to a beam waist of 15 µm.
This ensures optimal cut quality when cutting through OLED stacks of typical thickness (in…
…20° fan angle, pre focused to 500 mm distance, extended depth of focus, 500 mm cable with flying leads, analog modulation enabled 1258287 STR-600-10-CW-FL-L01-60-S-TX StingRay, 660 nm, 10 mW, single line, 60° fan angle, pre-focused to 500 mm distance, extended depth of focus, 500 mm cable with…
…(high power model) 400 Homogeneity Long Axis (%, 2 sigma) 1.8 1.8 1.8 1.8 1.8 Steepness Short Axis (µm) 100 70 125 70/125 (high power model) 85 Depth of Focus (µm) ±200 ±200 ±150 ±100/±150 (high power model) ±100 UV blade Key Features Cost Effective Laser Optical Solutions for Laser Lift-Off (LLO)…
…tagged bases. The diversity of methodology is reflected in the diversity of laser parameters needed for the different approaches. Some utilize tight focus and use just a few tens of milliwatts, whereas those that rely on wide-field excitation may use lasers at the 1 watt level and beyond. In order…
…capillary called a keyhole. Heat conduction welding is applicable for sheet metal up to a material thickness of approximately 2 mm. A laser beam, focused on the seam, heats the material and that heat is quickly conducted through the sheets causing it to melt and join together. Related Products DC…
January 2015 www.laserfocusworld.com Laser Focus World
80
HIGH-POWER LASER-DIODE ARRAYS continued
advantages come from being able to surface-mount the devices (versus TO-can
packaging of edge emitters), which makes
the height very small." A height of 3 mm
or less is…
February 2016 www.laserfocusworld.com Laser Focus World
34
O P T I C S F A B R I C A T I O N continued
to deliver a FBG center wavelength accuracy of 0.1 nm and a repeatability of ±50
pm in production.
Reflectance bandwidth
After center wavelength, the next critical…
…1300 LineBeam 1500
Wavelength (nm) 308
Line Length (mm) 750 1000 1300 1500
Beam Profile Type Top-hat beam along both axes
Depth of Focus (µm) ±150 ±120 ±120 ±120
LineBeam Performance
Example of LB1000 2D-beam profile, short and long axis cross sections in the substrate…
…1300 LineBeam 1500
Wavelength (nm) 308
Line Length (mm) 750 1000 1300 1500
Beam Profile Type Top-hat beam along both axes
Depth of Focus (µm) ±150 ±120 ±120 ±120
LineBeam Performance
Example of LB1000 2D-beam profile, short and long axis cross sections in the substrate…