Libra-HE Power Stability
>14 hours, 800 and 266 nm
ISO 9001 Registered
VISIBLE AND INVISIBLE LASER RADIATION.
AVOID EYE OR SKIN EXPOSURE TO
DIRECT OR SCATTERED RADIATION.
CLASS IV LASER RADIATION PRODUCT
PER EN60825-1 (1994)
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In contrast, the 308 nm ultraviolet light emitted by
excimer lasers is absorbed very near the
glass/adhesive interface, penetrating only just a few
hundred nanometers. Thus, it leaves the thin wafer…
…drops off rapidly beyond 800 nm. Laser manufacturers are responding to this need with lasers at wavelengths including 808 nm and even 980 nm. Power Power is the other obvious laser output parameter, where image intensity is approximately proportional to laser power. Laser-excited fluorescence…
is demonstrated through life-test data on an ultrabroadband
(UBB) ultrafast laser operated at a center wavelength of 800
nm in constant-pump-power mode and set at full bandwidth
(~160 nm FWHM) for 9000 hours, monitoring the spectral
stability (see Fig. 4).
…conditions and what final package the diode laser bar might go into." DILAS produces laser bars that range in output power from single-digit values out to hundreds of watts per bar. Their wavelengths range from 635 nm (visible red) to greater than 2300 nm and beyond, with electrical-to-optical…
…fourth-generation fabrication processes that produce aluminum aspheric mirrors (even for common 6061-T6 alloys) up to 800 mm in diameter with surface figures as good as /100 (at 633 nm), with root-meansquared (RMS) surface roughness of just a few angstroms. Rather than follow traditional means of…
…range from 190 nm to
1100 nm, CCD and CMOS cameras or Si-sensor based knife-edge
detectors should be the choice technology. For the near infrared,
from 800 nm to 1800 nm, InGaAs-based arrays or sensors are onhand. However, for wavelengths from 800 nm to 1100 nm, CCD-,
…are well suited for the III-V material systems commonly
used in LED manufacturing. The 248 nm excimer in particular far exceeds the performance of
266 nm or 213 nm solid-state lasers. Given this, the excimer enables significantly differentiated
process strategies that are highly…
…product marketing manager at Coherent
Laser Systems GmbH.
FIGURE 3. SEM pictures of excimer laser surfaces
treated with 800 mJ/cm2: a) untreated with no exposed
fbers; b) two laser pulses where fbers become exposed;
and c) six laser pulses where fbers are clearly exposed…
Wavelength Range (nm) 680 to 1300 1040 (fixed)
Max Output Power (mW) >1400 at 800 nm >1500
Repetition Rate (MHz) 80 ±0.5 80 ±0.5
Pulse Duration (fs, sech2) 100 at 900 nm 140
Beam Mode M2 <1.2 M2 <1.2
Astigmatism (%) <10 at 900 nm <10
…ultrafast processing and processing with longer
Picosecond regime, ultra-short pulse (USP) lasers operating at 532 nm (green) are now emerging as
alternative technology to UV nanosecond lasers in package cutting applications because they often
Table. 3: Operating costs for various laser types for an operation time of 10,000 hours.
Power class (mW) 50 50 50 50 100…
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