Solid State Lasers

Our range of services

Solid-state lasers are widely used in the market: from production and measurement technology via communication and information technology all the way to medical technology. Fraunhofer ILT designs, develops and constructs solid-state lasers with pulse durations in the nanosecond and picosecond range up to continuous wave operation and with repetition rates from a few Hz up to MHz in pulsed operation. Whether they have large pulse energies (> 100 mJ) or pulse peak powers (> 100 MW), high average power (> 1 kW), special wavelengths in the range 1 μm to 3 μm, narrowband or broadband spectra, the lasers developed at Fraunhofer ILT cover a broad spectrum of customer-specific requirements.

INNOSLAB technology makes it possible to develop high performance and cost-effective high-gain laser amplifiers used in industrial applications such as manufacturing. The crystal composition and geometry of the INNOSLAB technology are decisive factors. Together with partners from research and industry, Fraunhofer ILT is also developing novel crystals that generate application-specific wavelengths in a direct and efficient manner. Solid-state lasers are used, for example, as transmission sources in LIDAR systems for metrology.

The range of services includes feasibility studies, simulations, the development of customized solid-state lasers, the automation of laser systems and their integration in industrial applications as well as individual consulting.

FULAS – Future laser technology demonstrator (as part of the ESA project FULAS and the BMWi project Optomech II / III in cooperation with Airbus DS GmbH).
© Fraunhofer ILT, Aachen, Germany.
FULAS – Future laser technology demonstrator (as part of the ESA project FULAS and the BMWi project Optomech II / III in cooperation with Airbus DS GmbH).
Tm: YLF oscillator - detail.
© Fraunhofer ILT, Aachen, Germany.
Tm: YLF oscillator - detail.
FULAS – interior view.
© Fraunhofer ILT, Aachen, Germany.
FULAS – interior view.


  • INNOSLAB and rod oscillators
  • Ultra stable single-frequency systems for aerospace
  • Adapted pulse duration and wavelength
  • New laser materials

Amplifier Systems

  • High power InnoSlab amplifiers
  • Regenerative amplifiers with variable pulse lengths
  • Pulse durations from ps up to cw
  • PRF from single shot to MHz

Prototype Development

  • Tailored customer-specific solutions
  • Prototypes for scientific and industrial use
  • Lasers for aerospace

Simulation and Consulting

  • Design, analysis and optimization of lasers
  • Analytical and numerical simulation


Our brochures offer a quick view onto our service portfolio. Find more detailed information in the “project results“ tab.


“Solid State Lasers“


Laser technology can solve demanding tasks in many different industries. Whether as a tool in automotive production, as measuring equipment in the environmental sector, as a diagnostic or therapeutic instrument in medical technology or as a communication medium in space technology, the laser provides multiple uses with high productivity and high efficiency.

Read up about the innovations of the Fraunhofer ILT in a few selected industries and convince yourself!


Research with us!

Please do not hesitate to contact us if you have any questions about general topics! Our contact persons are happy to get in touch with you.


Livrozet, M. J., Elsen, F., Wüppen, J., Löhring, J., Büdenbender, C., Fix, A., Jungbluth, B., Hoffmann, D.:
Feasibility and performance study for a space-borne 1645 nm OPO for French-German satellite mission MERLIN
Proc. SPIE 8959, 89590G (7) (2014)

Löhring, J., Luttmann, J., Kasemann, R., Schlösser, M., Klein, J., Hoffmann, H.-D., Amediek, A., Büdenbender, C., Fix, A., Wirth, M., Quatrevalet, M., Ehret, G.:
INNOSLAB-based single-frequency MOPA for airborne lidar detection of CO2 and methane
Proc. SPIE 8959, 1-8 (2014)

Li, J., Yang, S. H., Meissner, A., Hofer, M., Hoffmann, D.:
A 200 W innoslab Tm:YLF laser
Laser Physics Letters 10, 55002-

Meissner, A., Kucirek, P., Li, J., Hoefer, M., Hoffmann, D.:
Simulations and experiments on resonantly-pumped singe-frequency Erbium lasers at 1.6 µm
Solid State Lasers XXII, Proc. SPIE 8599, H1-8

Meissner, A., Li, J., Lopez-Perez, I., Yang, S., Hoefer, M., Hoffmann, D.: 200-W Tm:YLF INNOSLAB laser
Solid State Lasers XII, Proc. SPIE 8599, C1-7

Tulea, C., Caron, J., Wahab, H., Gehlich, N., Hoefer, M., Esser, D., Jungbluth, B., Lenenbach, A., Noll, R.:
Highly efficient nonthermal ablation of bone under bulk water with a frequency-doubled Nd:YVO4 picosecond laser

Proc. SPIE 8565, 85656 E-1 (11 S.) (2013)

Faidel, H., Gronloh, B., Winzen, M., Liermann, E., Esser, D., Morasch, V., Luttmann, J., Leers, M., Hoffmann, D.:
Passive alignment and soldering technique for optical components 
Proc. SPIE 8235, (10 S.) 2012

Legall, H., Blobel, G., Stiel, H., Sandner, W., Seim, C., Takman, P., Martz, D. H., Selin, M., Vogt, U., Hertz, H. M., Esser, D., Sipma, H., Luttmann, J., Höfer, M., Hoffmann, H. D., Yulin, S., Feigl, T., Rehbein, S., Guttmann, P., Schneider, G., Wiesemann, U., Wirtz, M., Diete, W.:
Compact x-ray microscope for the water window based on a high brightness laser plasma source 
Opt. Express, OSA, 20, 18362-18369 (2012)

Pupeza, I., Holzberger, S., Eidam, T., Esser, D., Weitenberg, J., Carstens, H., Rußbüldt, P., Limpert, J., Udem, T., Tünnermann, A., Hänsch, T. W., Krausz, F., Fill, E.:
Generation of Coherent sub-20 nm XUV Radiation at 78 MHz via 
Cavity-Based HHG
Proc. of the 18th International Conference on Ultrafast Phenomena (2012)

Meissner, A., Kucirek, P., Hoffmann, H.-D.:
Resonantly-pumped single-frequency Er:YLuAG-laser with pulsed emission at 1645.2 nm  (air)
Proceedings of the Europhoton 2012 Conference, Stockholm (2012)

Fix, A., Ehret, G., Löhring, J., Hoffmann, D., Alpers, M.
Water vapor differential absorption lidar measurements using a diode-pumped all-solid-state laser at 935 nm
Appl. Phys. B-Lasers and Optics DOI 10.1007/s00340-010-4310-5, (11 S.) 2010

Löhring, J., Meissner, A., Hoffmann, D., Fix, A., Ehret, G., Alpers, M.
Diode-pumped single-frequency-Nd:YGG-MOPA for water-vapor DIAL measurements: design, setup and performance
Appl. Phys. B-Lasers and Optics DOI 10.1007/s00340-00-4314-1 (19 S.)

Strotkamp, M., Schwarz, T., Jungbluth, B., Faidel, H., Leers, M.
Efficient, green laser based on a blue-diode pumped rare-earth-doped fluoride crystal in an extremely short resonator
Proc. SPIE 7578, 757880O (7 S.) 2010

Strotkamp, M., Schwarz, T., Jungbluth, B.
Power scaling of a compact and efficient blue diode pumped solid state laser emitting green light
Advanced Solid State Photonics (ASSP), San Diego, Ca., February 3, 2010. OSA Technical Digest Series, Paper AMB 29. (3 S.)

C. Brecher, N. Pyschny, P. Loosen, M. Funck, V. Morasch, R. Schmitt, A. Pavim
Self-optimising flexible assembly systems
Self-x in Engineering. Benjamin Klöpper, Wilhelm Dangelmaier (Eds.)
Münster: MV-Wissenschaft 2009
pp. 23-38

J. Dolkemeyer, M. Funck, V. Morasch, C. Schnitzler, P. Loosen
Soldering techniques for the assembly of high power solid-state lasers
European Conference on Lasers and Electro-Optics and the XIth European Quantum Electronics Conference, Munich June 14-19, 2009

B. Gronloh, M. Höfer, R. Wester, H.-D. Hoffmann
High power UV generation at 355 nm by means of extracavity frequency conversion of a high repetition rate Innoslab MOPA system
Proc. SPIE
7193, 71930Y (11S.) 2009

R. Schmitt, A. Pavim, C. Brecher, N. Pyschny, P. Loosen, M. Funck, J. Dolkemeyer, V. Morasch
Flexibel automatisierte Montage von Festkörperlasern
WT-Online Nr. 11/12, 955-960, 2008

G. Kochem, M.Haverkamp, K. Boucke
Frequency stabilized high brightness tapered amplifier and laser modules
Proc. SPIE 6997, 69971A, 2008

W.Schulz, H. Weber, R. Poprawe (Eds.)
Laser Systems Pt 2.
W. Schulz; H. Weber, R. Poprawe (Eds.): New Series Landolt-Börnstein, Group VIII/1: Advanced Materials and Technologies, Volume 1: Laser Physics and Applications, Subvolume VIII/1B 2
Berlin: Springer 2008

J. Luttmann, K. Nicklaus, V. Morasch, S. Fu, M. Höfer, M. Traub, H.-D. Hoffmann, R. Treichel, C. Wührer, P. Zeller
Very high-efficiency, frequency-tripled Nd:YAG MOPA for spaceborne lidar
Proc. SPIE 6871, 12 S., 2008

J. Luttmann, K. Nicklaus, V. Morasch, S. Fu, M. Höfer, M. Traub, H.-D. Hoffmann, R. Treichel, C. Wührer, P. Zeller
Very high-efficiency, frequency-tripled Nd:YAG MOPA for spaceborne lidar
Proc. SPIE 6871, 12 S., 2008

M. Hoefer, M. Traub, R. Kleindienst, H. Sipma, H.-D. Hoffmann, P. Wessels, P. Burdack
Multi ten-watt, ultra-stable, and tuneable Innoslab-based single frequency MOPA
Proc. SPIE 6451, 7 S., 2007

J. Loehring, K. Nicklaus, N. Kujath, D. Hoffmann
Diode pumped Nd:YGG laser for direct generation of pulsed 935 nm radiation for water vapour measurements
Proc. SPIE 6451, in print, 2007

K. Nicklaus, M. Daniels, R. Hohn, D. Hoffmann
Optical Isolator for Unpolarized Laser Radiation at Multi-Kilowatt Average Power
Technical Digest - OSA "Advanced Solid-State Photonics" (3 S.) 2006