PERFORMANCE MEETS RELIABILITY
The Active Fiber Systems GmbH is located in Jena, known as ‘city of photonics’ in Germany. As a spin-off company from both the Fraunhofer IOF Jena and the Institute of Applied Physics at the University of Jena, the Active Fiber Systems GmbH represents the expertise of innovative solid-state laser development.
Fiber lasers enjoy an excellent reputation as power-scalable diode-pumped solid-state laser concept. Their immunity against thermo-optical issues is combined with efficiency and high performance in fiber based amplification. During the last decade, ultra-short pulse fiber laser systems have been developed in Jena’s institutes. The laboratory results are ground-breaking; several world records in performance are held by those institutes.
The mission of Active Fiber Systems GmbH (AFS) is to transfer experimental results to reliable laser systems suitable for scientific and industrial applications. Among the remarkable features of AFS's pulsed fiber lasers are their compact dimensions, considerably reduced production costs as well as flexible and outstanding laser parameters, which can be customized.
PRODUCTS
Customized kW- and mJ-class femtosecond fiber lasers
FLEXIBLE PARAMETERS COMBINED WITH HIGH PERFORMANCE
AFS’s customized kW average power and multi-mJ pulse energy ultrafast laser systems are based on AFS leading-edge fiber technology. They unite multiple main-amplifier channels using coherent combination, a technology which AFS has matured to an industrial grade. All essential parameters are software-controlled and can be tuned over a wide range, making them an extremly valuable tool for numerous application.
| APPLICATION EXAMPLES |
| • Materials processing |
| • Micro- and nano-machining |
| • Pumping of optical parametric amplifiers (OPA) |
| • Generation of high harmonics (HHG) |
Overview of the available configurations
| Pulse energy | up to 10 mJ | |
| Average power | up to 1.4 kW | |
| Wavelength | 1030 nm (2000 nm on request) | |
| Pulse repetition rate | tunable between single-shot and 100 MHz | |
| Pulse duration | from 200 fs up to 10 ps (others on request) | |
| Beam quality | close to diffraction-limited (M2<1.3) | |
| Average-power stability | <0.5 % RMS | |
| Pulse-energy stability | <0.5 % RMS | |
| Options | OPA, SHG, THG, HHG, NC, BURST, FASTSWITCH |
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100 W FEMTOSECOND LASER
OPTIMIZED FOR COMPACTNESS AND PRICE
The quality of any laser appication crucially depends on the performance of the driving light source, i.e. the laser itself. In addition, most applications ask for more and more average power from the laser source to be cost-effective or sensitive enough.
AFS ultrafast fiber lasers are characterized by an outstanding performance combined with flexibility and maximum stability. All essential parameters are software controlled and can be tuned over a wide range, making them an extremely valuable tool in many applications.
| APPLICATION EXAMPLES |
| • Materials processing |
| • Micro- and nano-machining |
| • Pumping of optical parametric amplifiers (OPA) |
| • Generation of high harmonics (HHG) |
| Pulse energy | up to 300 µJ | |
| Average power | up to 100 W | |
| Wavelength | 1030 nm | |
| Pulse repetition rate | tunable between single-shot and 20 MHz | |
| Pulse duration | from 300 fs up to 10 ps | |
| Beam quality | close to diffraction-limited (M2<1.3) | |
| Dimensions laser | approx. 112 cm x 41 cm x 20 cm | |
| Options | OPA, SHG, THG, HHG, NC, BURST, |
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Dual-wavelength picosecond fiber laser for nonlinear microscopy
Compact, alignment-free and all-fiber picosecond laser source for CARS microscopy delivering synchronized pump and Stokes pulses from a single fiber end. This air-cooled and turn-key CARS laser source has a great benefit for the user as the fiber delivery eliminates alignment of the spatial and temporal pulse overlap. High quality and high-speed microscopic multimodal nonlinear imaging is possible by e.g. simultaneously probing the CARS CH-vibrational-levels of lipids around 2850 cm-1, the second harmonic generation (SHG) and the two-photon excited fluorescence (TPEF) signals.
| APPLICATION EXAMPLES |
| • CARS spectroscopy and microscopy |
| • Microscopic multi-modal nonlinear imaging (CARS, SHG, TPEF) |
| •SRS microscopy |
Multimodal composite image of human connective tissue showing an overlay of the CARS (red), SHG (blue) and TPEF (green) signals.
Courtesy of IPHT Jena.
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| FOPG-Version for CARS | FOPO-Version for CARS & SRS | |||
| Frequency difference | tunable between 2700 cm-1 and 3300 cm-1 | tunable between 930 cm-1 and 3300 cm-1 | ||
| Pulse duration | <30 ps | <20 ps | ||
| Dimensions of laser head | 26 cm x 32 cm x 15 cm | 56 cm x 41 cm x 14 cm | ||
| Weight | <15 kg | <35 kg | ||
| STOKES PULSES | ||||
| Repetition rate | from 1 MHz up to 3 MHz | 18 MHz | ||
| Wavelength | approx. 1030 nm | approx. 1035 nm | ||
| Average power | >100 mW | >200 mW | ||
| Pulse peak power | >1 kW | >0.5 kW | ||
| Spectral width | <15 cm-1 | <5 cm-1 | ||
| PUMP PULSES | ||||
| Repetition rate | from 1 MHz up to 3 MHz | 9 MHz | ||
| Wavelength | approx. 800 nm | approx. 850 nm | ||
| Average power | >10 mW | >50 mW | ||
| Pulse peak power | >1 kW | >0.5 kW | ||
| Spectral width | <40 cm-1 | <20 cm-1 | ||
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XUV BEAM LINES
High-harmonic generation of ultrashort-pulse lasers has gained significant attention in the last years due to its enormous potential to adress a plethora of applications in a cost effective and table-top format. AFS ultrafast fiber-laser driven XUV beam lines offer record-high photon flux combined with turn-key operation and excellent stability.
| APPLICATION EXAMPLES |
| • Photoelectron spectroscopy |
| • Coherent diffractive imaging - CDI (nanoscope) |
| • Attosecond science |
| Photon energy | up to 80 eV | |
| Average power | up to 500 µW, up to 1014 photons per second | |
| Pulse duration | <30 fs | |
| Dimensions of HHG chambern | approx. 80 cm x 40 cm x 40 cm | |
| Additional features | Turnkey reliability, high stability, all parameters software-controlled | |
| Options | Single harmonic selection, separation of XUV radiation an IR laser |
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ADD-ONS TO AFS PRODUCTS
NONLINEAR COMPRESSION (NC)
Nonlinear compression is an elegant way to shorten the pulse duration of pulses beyond the capabilities of the employed laser gain medium.
This option can be applied to a large span of laser system with pulse energies ranging from µJ to several mJ and average powers at the kW-level.
Illustration of the nonlinear compression
BURST
Applying an femtosecond-pulse burst instead of an energetic single pulse holds the promise to significantly improve materials processing at highest average powers. AFS ultrafast fiber-laser systems can be operated in a burst mode with negligible variation of pulse duration over the burst and with a flexible pulse structure.
Illustration of the pulse burst
FAST SWITCH
As a part of AFS leading-edge fiber laser technology, the fast pulse-switching feature provides an optional extension of the laser‘s capability.
Single-pulse selection can be achieved up to 10 GHz repetition rate with this patented technology. Full control over the pulse sequence is guaranteed on both their occurrence and their amplitude, which can be adapted to the customers needs. Most important, the ultrafast modulator works at highest average power levels without any detrimental effects on the laser characteristics.
Illustration of the fast switch
Customized pre- and main amplifiers
Fiber amplifiers are able to provide several orders of magnitude of gain and can be adapted to boost smallest input signals. These features make ytterbium-doped fiber-based amplifiers to the ideal platform for customized amplifier solutions.
| Wavelength range | 1020 nm – 1070 nm | |
| Minimal input performance | >200µW average power | |
| Input repetition rates | 10 kHz – 100 MHz | |
| Optional pulse picker | to address repetition rates between single-shot and 100 MHz | |
| Output pulse energy | up to 10 mJ | |
| Output average power | up to 1,4 kW | |
| Beam quality | close to diffraction-limited (M2 <1.3) |
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Femtosecond and picosecond mode-locked fiber lasers
Mode-locked fiber lasers are compact and reliable seed sources for your application or your amplification stages. Flexible parameters in terms of pulse duration, repetition rate and performance can be realized.
| Center wavelength | 1020 nm – 1070 nm | |
| Pulse energy | up to 100 nJ | |
| Average power | >100 mW | |
| Pulse duration | 300 fs – 100 ps | |
| Pulse repetition rate | 50 kHz – 20 MHz | |
| Emission | free-space or fiber-coupled output |
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JOB OFFERS
We are growing fast and have a number of open positions. At the moment we are looking for:
Lasertechniker/-in (m/w) (.pdf)
CONTACT
Office space as well as laboratories for development and production of AFS GmbH is located at the Beutenberg Campus in Jena.
Active Fiber Systems GmbH
Ernst-Ruska-Ring 11
07745 Jena
Germany
Office: +49 3641 63379-0
Fax: +49 3641 63379-10
for sales requests: sales@afs-jena.de
for other requests: contact@afs-jena.de
Some research projects are publicly funded. More information: click here.
VENDOR OF THE WEBSITE
Active Fiber Systems GmbH
Ernst-Ruska-Ring 11
07745 Jena, Germany
Office: +49 3641 63379-0
Fax: +49 3641 63379-10
E-mail: contact@afs-jena.de
Registered by Handelsregister Amtsgericht Jena HRB 504500
UStIDNr.: DE 267449729
CEO: Bettina Limpert
DISCLAIMER
Active Fiber Systems GmbH cannot guarantee that all information included in these web pages is absolutely precise and free of error. Active Fiber Systems GmbH rules out any liability for damages that directly or indirectly arises from the use of these web pages. Active Fiber Systems GmbH provides the information included in these web pages without any assurance or guarantee, whether explicit or implicit. We distance ourselves from all unlawful content on web sites to which a link is provided. No liability is assumed for information from these sites and all other sites to which they are linked itself.
COPYRIGHTS AND TRADEMARKS
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Supported by the Free State of Thuringia and the European Social Fund