…to their final thickness (usually >1µm). The photoresist is stripped and
FIGURE 2. Excimer laser ablation
produces clean, small features in
FIGURE 3. Varying laser fluence enables manipulation of feature
side-wall angles, which can be important in subsequent…
…study, a vessel was
embedded deeper in the tissue phantom.
Again, the laser was able to cut precisely and cleanly close to the vessel with
minimal thermal damage.
"The applications for fiber lasers are still
growing rapidly," Wojtkiewicz says. "We
believe that our…
…] Clean third fiber according to fiber cleaning procedure.
(16/24/35 W System).
[ ] Attach fiber 3 to FAP-B #3 (16/24/35 W System).
[ ] Clean fiber 4 according to fiber cleaning procedure
(16/24/35 W System).
[ ] Attach fiber 4 to FAP-B #4 (16/24/35 W System).
[ ] Clean…
cleans out the hole all the way to the underlyingcopper,which--beinguncoated--
reflects the beam and self-terminates the
hole. This method enables rapid production of accurately sized holes with little
became the main laser…
…at Coherent, who used
the LaserCam-HR at a previous company. "It's one thing to shoot a laser at
some turn mirrors, a beam expander, and
then a focusing lens. What actually happens to the laser beam when transitioning
through those additional optics?"
Pease used the Coherent…
Laser Focus World www.laserfocusworld.com May 2015
A variety of ultrafast options
But a solid-state scientific ultrafast laser does not necessarily
have to be Ti:sapphire. For example, Time-Bandwidth Products
also makes a neodymium glass (Nd:glass) laser that emits…
…the laser energy is applied to the material, and this creates gas pressure that can blow out the molten steel, resulting in an inconsistent weld seam as well as spatter that needs to be subsequently cleaned. There's no easy way to control these dynamics with a single focused spot, because the laser…
…LLO process, the LED wafer is exposed to
high intensity UV laser pulses directed through the sapphire substrate, which is transparent at a
wavelength of 248 nm. The interfacial GaN layer absorbs the UV laser photons, heats up to
about 900°C and undergoes thermal decomposition.…
…debris to simplify
cleaning or potentially avoid the need for any subsequent cleaning.
For many industrial processes, optimization requires trade-offs and compromises, e.g., speed versus
cut quality. Yet in both these singulation examples using a USP laser, process optimization…
…routinely by users for periodic cleaning of the optics. The reason is that micro-contaminants accumulate on some optical surfaces ultimately leading to burn damage and optical losses. Assembling these lasers in a tightly controlled clean room setting was a first mandatorystepbutfailedtoconsistently…
…create lasers that can be sold successfully to the market place. The chance of entrepreneurial success will
increase with the overall performance and quality of the products. One common goal that all laser designers share is
to develop superior lasers which deliver good and clean beams…
…Safety Shutter /
User's Mechanical Interface
Control / Diagnostics
Purge Air Output
Clean / Dry Purge Air
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