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Volume Absorber

COHR WhitePaper template 2 08 2019

COHR WhitePaper template 2 08 2019

…(Optoskand) fibers (QBH, QD), the volume behind the quartz block is filled
with circulating cooling water. This means that the radiation removed from the cladding by the
mode stripper is directly absorbed in water, rather than being absorbed in a metal part that is
water-cooled.…

High Peak Power Thermopile Sensors

High Peak Power Thermopile Sensors

…detector absorbs the bulk of the laser energy, thus preventing all of the laser energy from striking the front surface of the detector element. These sensors are intended to be used at relatively low repetition rates of approximately 10 pps. The PM10V1 and PM30V1 utilize a volume absorber and have a…

Solar Cell Manufacturing

Solar Cell Manufacturing

--> c-Si Solar Cell Edge Isolation - Laser process tools enable ultra-narrow c-Si solar cell line scribing for edge isolation while minimizing sub-surface damages such as microcracking. Laser process tools for solar cell Edge Isolation all feature AVIA lasers; currently the dominant laser source for…

COHERENT LMC 2016-2017 Catalog .pdf

COHERENT LMC 2016-2017 Catalog .pdf


Features
· Volume absorber
· 2 J/cm2 at 1064 nm
PM30V1 and PM10V1
These sensors are designed for use with high peak power, low repetition
rate, Q-switched Nd:YAG lasers. A volume-absorbing substrate mounted in
front of the detector absorbs the bulk of the laser…

Bio Photonics - February/March 2018

Bio Photonics - February/March 2018

…involved hydrated tissue samples
in vitro. These indicate that the weaker
absorption at 5 µm means that the laser
power is absorbed over a large volume
(compared to 10.6 µm), which results
in a higher degree of photocoagulation
compared to tissue ablation (Figure 3).…

CMM 9.3.indd

CMM 9.3.indd

…interaction; material is heated until
it bleaches, carbonises or ablates in order to produce
a colour contrast. Nearly all plastics directly absorb
the far infrared CO
2
output; absorptive additives are
sometimes used to facilitate this process with near
infrared,…

ILS Annealing.PDF

…patterning of microcircuits for
cost-sensitive applications like medical disposables. Here, the
excimer laser is used to pattern a very high volume of disposable
sensor circuits in thin metal on a flex substrate in a reel-toreel process.
Laser Lift-Off (LLO) is another important…

Industrial Photonics - July 2018

Industrial Photonics - July 2018

…efficient.
In contrast to copper and thin films, welding plastic to
metal often involves getting the light through a first layer
and absorbed by a second. For this and plastic welding,
IPG Photonics has seen interest by industry in thulium
fiber lasers. These emit at around…

Microsoft Word - PW09 7198-38 Leisher Copyright.doc

Microsoft Word - PW09 7198-38 Leisher Copyright.doc

…arena are internal buried distributed Bragg gratings (DFBs) [4] and external volumetric Bragg gratings
(also commonly referred to as VHGs for volume holographic grating) [5-6]. VHGs are external optical components in
which a periodic variation in index of refraction has been written into…

COHR WP Ablation of BioPolymers 193nm.pdf

COHR WP Ablation of BioPolymers 193nm.pdf

…pulse intensities and film thicknesses. It is well-known that if the absorbed energy from a laser
pulse is deposited so rapidly that the heat does not have time to relax and diffuse out of the ablation
volume, then a condition called thermal confinement arises, where peripheral thermal…

Bio Photonics - October 2015

Bio Photonics - October 2015


based on low-probability mechanisms,
regardless of whether very tightly focused
high powers are employed, the average
power absorbed by the sample is quite
small.
Clinical potential
In 2011, researchers at Cornell University were in the process of developing a…