- Offer Profile
- We, the Dausinger + Giesen GmbH (D+G) develop, market and sell key components and know-how in the field of disk laser technology. Together we can find an appropriate solution for your desired specifications. With our extensive broad and deep knowledge and experience, we can actively be your partner, from the time of the initial idea up to the final product.
Disk Laser Components
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With our thin disk laser modules (TDM) you can build your own disk laser. Disk laser modules in various power classes are available with pump powers of 50 W, 1 kW, 10 kW, and above for one single disk. Our recently developed module TDM 30 allows highest power pump radiation of more than 30 kW guided by fiber cables.
Our TDM 1.0 pump module, for example is a compact way to realize up to 48 passes of the pump beam over the disk. Without showing the pump beam as in the schematic above, please have a look into the module, itself:
For research and development we offer LABoratory versions allowing easy adjustment of optical elements.
For your series production we offer low cost OEM modules with preadjusted fixed optics.
The completely assembled module contains:
- a coupling unit for the pump radiation with SMA or HP fiber connector,
- a pump chamber with optics for multipass imaging of the pump radiation onto the disk,
- a water cooled disk holder for a D+G disk
- an aperture for the setup of a laser resonator.
- our pump modules are made of stainless steel, which - compared to brass - is much more corrosion resistant and allows the usage of DI water
TDM 1.0 Lab
- Thin disk pump optics for guiding up to 1 kW (optionally even 2 kW) of pump power multiple times over a laser active thin disk medium, such as provided by our TD12 disks. Due to its easy integration in an laboratory style optical laser setup and due to its many degrees of freedom for adjustment, the TDM 1.0 (2.0) is recommended for a laboratory environment.
TDM 30 High Power
- Pump power up to 30 kW (so far tested with 13 kW, due to non-availability of pump diodes with 30 kW of pump power; in multimode operation an output power of 7.8 kW was demonstrated)
Thin Disk Laser Gain Media
- Mounting of thin laser crystals, thereby ensuring effective and homogenous cooling, is the key technology for disk lasers. For various laboratory applications as well as for the series production of our OEM customers, we offer pre-mounted disk laser crystals tailored to and tested under the customer’s specifications and/or operating conditions.
TDM 0.05 Compact
- Pump power up to 50 W; 12, 20, or 28 passes of pump radiation; Compact Low cost; Water or Peltier cooled
TDM 10
- Thin disk pump optics for guiding up to 10 kW of pump power multiple times over a laser active thin disk medium, such as provided by our TD20 or TD25 disks.
High Power Pockels Cell
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The Dausinger + Giesen Pockels cell is designed to operate with high pulse energy. The large BBO crystal is used to operate the pockelscell with pulse energy levels of 200 mJ and more. It s also teste with several 100 Watt average power.
- BBO crystal size up to 12 mm x 12 mm x 20 mm
- Operation with a pair of crystals
- water cooled aperture (optional)
- housing (optional)
Disk Laser Systems
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Based on thin disk technology, D+G offers well designed laser systems with extraordinary specifications but also special purpose laser systems according to customers specifications, which are not readily available at the market.
Either pulsed or continuous wave, single frequency or free running spectrum, several watts or kilowatts, frequency converted or fundamental wave – we have many years of experience in developing and building disk lasers and can offer you a solution for your demands.
An example for an industry and/or laboratory ready laser system is the VaryDisk platform. The VaryDisk platform is a modularly designed pulsed laser system allowing to tailor the output specifications of the system at the time of purchase according to your needs. The system can be simple and robust for generating pulse trains with one specific pulse duration, or as the name "VaryDisk" implies extremely flexible:
With its genuine variability option "fs...us". the VaryDisk platform offers unprecedented flexibility in the choice of pulse duration from the femtosecond to the microsecond range. The variability option was developed for process development in micromachining. One of the most important tasks thereby is to find the optimum pulse duration for a given application. The VaryDisk-fs...us allows to vary pulse duration keeping other parameters like pulse energy, focus diameter or wavelength constant. Interesting fields of application are surface structuring e.g. for tribological, printing or embossing purposes and various tasks in production of PV cells.
VaryDisk Platform
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The VaryDisk platform provides the basis for our customizable VaryDisk laser systems for laboratory investigations and/or industrial use. The output specifications of the VaryDisk laser system can be chosen according to our customers need by either choice of one out of four base versions:
- nano: High pulse energy nanosecond system with lowest complexity
- pico: Picosecond laser system with high average output power and low complexity
- femto: Pulse durations in the femtosecond regime of up to < 350 fs
- energy: CPA based system with up to 150 mJ pulse energy
combined with various available options, or by special request (REQ). The VaryDisk Series is highly customizable; output parameters given here are based on already realized systems. A detailed discussion with our customer during the time of purchase is meant for finding a system best suited for his needs. Depending on the individual choice of parameters, the VaryDisk laser system qualifies as industrial, scientific, or prototype laser system.
VaryDisk NANO
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The VaryDisk NANO is a fully functional laser system for laboratory investigations and/or industrial use. The output specifications of the VaryDisk NANO is characterized by nanosecond pulse durations (approx. > 30 ns). Depending on our customers need, the pulse duration can be variied and additional specifications can be adjusted accordingly. The VaryDisk NANO is based on a robust design with least complexity compared to our other VaryDisk systems. Depending on the individual choice of parameters, the VaryDisk laser system qualifies as industrial / scientific or prototype laser system.
FEATURES
- output power: up to 150 W with power upgrade (p)
- pulse energy: up to 150 mJ with energy upgrade (+)
- pulse duration approx.: 40 ns
- repetition rate: 1 kHz ... 20 kHz
- wavelength: 1030 nm
- beam quality: < 1.3
VaryDisk PICO
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The VaryDisk PICO is a fully functional laser system for laboratory investigations and/or industrial use. The pulse characteristics of the VaryDisk PICO is mainly determined by the seed laser of this system. Our standard configurations includes a 6 ps seed, however other pulse durations are possible, depending on the need of our customer. Depending on the individual choice of parameters, the VaryDisk laser system qualifies as industrial / scientific or prototype laser system. Compared to our other VaryDisk systems, the VaryDisk PICO is a robust system with minor complexity.
FEATURES
- output power: up to 120 W
- pulse energy: up to 1 mJ or 4 mJ with energy upgrade (+)
- minimum pulse duration depends on seed laser: e.g. 6 ps other seed lasers on request
- repetition rate: 100 kHz ... 1 MHz
- wavelength: 1030 nm
- beam quality: M2 < 1.3
VaryDisk FEMTO
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The VaryDisk FEMTO is a fully functional laser system especially suited for laboratory investigations. The VaryDisk FEMTO is equiped with a femtosecond seed source, allowing ultrashort pulse durations. Additional specifications can be chosen according to our customers need by either combination of one of our four VaryDisk base versions, or with various available options listed below. Especially usefull for the VaryDisk FEMTO system is the variability option, alowing a motorized adjustment of the pulse duration. Furthermore, additional seed lasers can be used for an even larger flexibility with respect to the available pulse durations. Depending on the individual choice of parameters, the VaryDisk FEMTO qualifies as industrial / scientific or prototype laser system.
FEATURES
- customizable output parameters
- robust design
- output power: up to 100 W and 150 W with power upgrade
- pulse energy: up to 500 uJ
- minimum pulse duration: up to 350 fs ... 2 ps
- pulse duration automatically adjustable
- pulse to pulse switchable pulse duration
- repetition rate: 100 kHz ... 1 MHz
- wavelength: 1030 nm, 515 nm, or 258 nm (with SHG, UV option)
- beam quality: M2 < 1.35
- energy stability up to < 3 % RMS
- power stability up to < 1 % RMS
- customizable network interface
VaryDisk ENERGY
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The VaryDisk ENERGY is a fully functional laser system with chirped pulse amplification (CPA) for laboratory investigations and/or industrial use. The output specifications of the VaryDisk energy laser can be chosen according to our customers need by either combination of one of our four VaryDisk base versions, or with various available options listed below. Depending on the individual choice of parameters, the VaryDisk energy laser system qualifies as industrial / scientific or prototype laser system.
FEATURES
- output power: up to 10 W and 150 W with power upgrade (p)
- pulse energy: up to 10 mJ or 150 mJ with energy upgrade (+)
- minimum pulse duration: 2 ps ... 3 ps
- repetition rate: 1 kHz ... 20 kHz
- wavelength: 1030 nm
- beam quality: < 1.3
GigaPulse Linear Amplifier
GigaPulse Linear Amplifier
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The D+G GigaPulse is the first commercially available device achieving kW average power as well as mJ pulse energy in the short and ultrashort pulse time regime.
The D+G VaryDisk is build in a cascading laser system starting from a seed laser amplified by a VaryDisk to a power and energy level which suits the amplification properties of the GigaPulse system - typically. Other configurations are possible as well.
We engineered the GigaPulse for the following pulse energy and average power regimes:
- 1 J; 1kHz; 1ns
- 750mJ; 1kW; ≤ 3ps
- 1,4mJ; 1MHz; ≤ 3ps
- 15mJ; 100 kHz; ≤ 3ps
Depending on the pulse energy level operating in vacuum might be required. For these cases an industrially designed vacuum chamber ist available.
The pumping of the GigaPulse is done with one of the most reliable pump sources available on the market - typically: a Laserline LDF.
Micro Machining
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Since Technologiegesellschaft für Strahlwerkzeuge mbH (TGSW) merged into D+G in 2014, our competence is not limited to disk lasers any more: Ample experience in macro and micro processing allows us to find the best solution for you. We offer in-factory support, feasibility studies and small series production in our D+G application lab.
Fine cutting
By cutting thin materials, the cutting force often deforms or cracks the work piece. Nearly every material and every geometry can be machined by choosing the correct laser parameters.
- Independend of material
- Free of burr
- Free in geometry
In order to find for you the best solution possible, we offer in-factory support, feasibility studies and small series production in the D+G application lab.
Cutting of glass, paper, silicon and stainless steel can be done for example with our Varydisk laser system, which is one of our Disk Laser Systems offering unprecedented flexibility in the choice of pulse duration from the femtosecond to the microsecond range.
Marking
The structures generated when marking with lasers are highly resistant. Many materials like metals, ceramics and plastics can be machined. The high flexibility enables marking of raised serial numbers, marking of non flat surfaces can be realized and innovative applications for design and security aspects are possible.
- Large variety in material
- Free in geometry
Laser Drilling
Laser drilling is distinguished by a very high aspect ratio at small dimensions. By use of the right system technique even negative conicity is possible.
- Independend of material
- Free of burr
In order to find for you the best solution possible, we offer in-factory support, feasibility studies and small series production in the D+G application lab.
Micromachining can be brought to its edge with our Varydisk laser system, which is one of our Disk Laser Systems offering unprecedented flexibility in the choice of pulse duration from the femtosecond to the microsecond range in combination with our trepanning optic for drilling with highest precision. Our trepanning optic is characterized by high accuracy and simple adjustment. Hole geometries with advanced complexity can be achieved in addition to cylindrical or conical holes with sharp edged entrances and exits.
Structuring and Engraving
Precise ablation of material surfaces is enabled by the use of short and ultrashort pulses. With specially adapted beam delivery systems the ablation of thin films or even the generation of 3D-geometries is possible.
- Independent of material
- Free of burr
- Free in geometry
In our D+G application lab we have the ability to use large-scale scanners for large machining areas and, therefore, can find cost effective solutions for your application.
The examples shown here were realized with our Varydisk laser system, which is one of our Disk Laser Systems offering unprecedented flexibility in the choice of pulse duration from the femtosecond to the microsecond range, micromachining can be brought to its edge.
Micro Machining
Helical Drilling Optic
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With our trepanning optic for drilling with highest precision, micromachining can be brought to its edge. Our trepanning optic is a tool for efficient production of high-precision holes with well-defined geometry by means of helical drilling.
Our trepanning optic is characterized by its high accuracy and simple adjustment. Hole geometries with advanced complexity can be achieved in addition to cylindrical or conical holes with sharp edged entrances and exits.
Variable drilling diameter
- Variable beam inclination angle
- Fully automated control
- On-the-fly parameter adjustment
- Highest precision and reproducibility
- Simple adjustment
- Designed for industrial use
Another application of a helical drilling optic is high precision cutting. Since the inclination angle can be chosen, the edge angle can be adjusted according to the applications needs. Since "normal" cutting has a certain edge angle always, this edge angle can be adjusted with the helical drilling optic. And because the inclination angle can be adjusted by PLC this angle can be maintained for all contours.
Process Development
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Understanding the underlying physical principles is fundamental for successful laser processing. Together with the long term experience of D+G in laser processing, we offer various equipment for analysis of our customers processes (usage is - of course - not limited to laser processes):
- High speed diagnostics
- Spectral analysis
- Illumination
Assurance
Our staff has the expertise of planing and executing quality control procedures in the production facilities of our customers:
- Recording process signals
- Real time data handling
Diagnostic systems
- Processing adapter
- Illumination system
- Custom design solutions
