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Pulsed Diode Laser

Lasers | Photonics Handbook®

Lasers | Photonics Handbook®

lasers, like Nd or Yb diode-pumped solid-state (DPSS) lasers, lend themselves to be operated both in CW or pulsed operation.
Other lasers, like laser diodes or OPSLs, are not suitable at all for pulsed operations. Within this context, we define as "pulsed" laser devices that produce
pulses

2016-Ultrafast-Laser-Systems-Catalog.pdf

2016-Ultrafast-Laser-Systems-Catalog.pdf


Family of High Energy, kHz, Pulsed Green Lasers
Key Advantages
· Models up to 45 mJ and average powers >80W at 527 nm
· Nd:YLF gain medium for high energy storage
· Intracavity frequency doubled for best efficiency
· CW diode pumped for lowest optical noise

Diode Lasers Enable Diverse Therapeutic Applications

Diode Lasers Enable Diverse Therapeutic Applications

pulse duration, the follicle cells are
killed without causing thermal damage
to the dermis. This translates into an
optimum pulse width between ten and
hundred milliseconds, which is very
simple to achieve with the fast on/off capabilities of diode lasers.
Diode lasers

Advances in Diode Lasers and OPSLs

Advances in Diode Lasers and OPSLs

…resulted in laser diodes with output
throughout the visible spectrum. This has led
companies such as Coherent to develop highperformance packaged modules with long lifetimes
based on these visible laser diodes.
The Coherent OBIS family (see Figure 1) uses laser
diode and…

Microsoft Word - Coherent Whitepaper - Diode Therapeutic Applications 10-23-18

Microsoft Word - Coherent Whitepaper - Diode Therapeutic Applications 10-23-18

…variant of skin resurfacing uses a 1550 nm diode laser together with an infrared
CO2
laser at 10.6 m, in a procedure called "fractional resurfacing" - see Figure 4. In this twopronged approach, the CO2 laser is focused to a small spot and pulsed as the spot is moved
across the skin,…

2011-Diode-Laser-Modules-and-Pattern-Generators-Catalog.pdf

2011-Diode-Laser-Modules-and-Pattern-Generators-Catalog.pdf


Laser diode: overheating, over-current
Laser Diode Operating Temperature (°C) 25 ±0.5 (adjustable in factory)
Maximum Beam Power User adjustable (trim potentiometer on the back panel)
Beam Modulation External, though a DB-9 connector on the back panel
Monitoring Laser

Picosecond laser

Picosecond laser

…the external AOM
26 BNC-connecter Trigger; The laser emits pulses according to the trigger sequence. In the
software "external" must be activated.
27 connecter for laser head interface cable (including ground connection of the laser head)
28 D-Sub service connecter (HV). Coherent…

Excimer laser technology trends

Excimer laser technology trends

…low pulse frequency of 5 Hz and maximum
discharge voltage is shown in figure 4. The free running laser
delivered a mean pulse energy of 467.4 mJ and a standard
deviation of 0.2%, sigma.
2.4. High pulse frequency burst mode
Specific thin-film growth techniques such as pulsed

SST 2017-09 Laser Marking.pdf

SST 2017-09 Laser Marking.pdf

…single-mode laser beams
intoflat-topbeamprofiles,
specificallytoaddressthis
issue.
Other quality criteria,
such as high-purity linear
polarization,andstability
of pulse energy and pulse
width, are difficult to
achievewithlow-costfiber
lasers. This…

Whitepaper Thin Wafer Laser Debonding.pdf

Whitepaper Thin Wafer Laser Debonding.pdf

…400 pulses 900 pulses
Pulse Rate 10Hz 20Hz
Throughput >60 wafers/hr >60 wafers/hr
Table 1: Excimer laser parameters and throughput
Such requirements can be fulfilled with compact and
affordable low power excimer lasers. The Coherent
COMPexPro excimer laser family…

Coherent Magnum II Laser Operator's Manual

Coherent Magnum II Laser Operator's Manual

…the diode temperature to the
set point (25°C in standard lasers).
· The maintenance LED indicator (yellow) will turn OFF;
however, if it stays ON (meaning that the laser diode has weakened and is nearing depletion), the laser will still work until the
laser diode is fully…

Laser Focus World - January 2018

Laser Focus World - January 2018

…environment. For laser output power ranges in the tens and hundreds of milliwatts, cooling starts to become more important, especially for lasers that require good control of beam quality--here, thought given to heat-sink design is a benefit. For cooling of small diode Laser diodes work best when…