Fiber Lasers

Products and Services Fiber Lasers

High Power cw-Lasers with Fundamental Mode Beam Quality

  • Free space resonators
  • Fiber-Bragg gratings
  • All-fiber lasers
  • Polarized lasers
  • Fiber laser resonators and amplifiers
  • Design and simulation

Pulsed Fiber Lasers and Amplifiers

  • Fiber amplifiers for pulsed laser diodes
  • Single- and multi-stage amplifiers
  • Gain-switched fiber lasers
  • PD from ps to µs
  • PRF from kHz to MHz

Efficient, High Brilliant Pumping Technology

  • Concentrated and allocated pumping
  • Multimode fused combiners
  • Single emitters, multi-single emitters, multi emitters

Fiber Preparation and Assembly, Fiber Laser Components

  • Cleaving, splicing, recoating
  • Fiber tapers
  • Mode strippers
  • Isolators
  • Detailed simulation 3D laser structuring for preforms and components


Neumann, A., Giesberts, M., Witte, U., Fitzau, O., Hoffmann, H.-D.:
Analytical model for diode-to-fiber coupling and beam propagation in weakly guiding fibers.
2017 IEEE High Power Diode Lasers and Systems Conference (HPD), 11 Oct - 12 Oct 2017, Coventry, UK.
Proc. IEEE High Power Diode Lasers & Systems, 35-36 (2017)

Fitzau, O.:
Polarized fiber lasers and amplifiers
Springer Series in Optical Sciences. Vol. 189, 251-263 (2015)

Mingareev, I., Gehlich, N., Bonhoff, T., Abdulfattah, A., Sincore, A. M., Kadwani, P., Shah, L., Richardson, M.:
Principles and applications of trans-wafer processing using a 2-µm thulium fiber laser
Int. J. Adv. Manuf. Technol. (Online first) (12 S.) (2015)

Becker, M., Werner, M., Fitzau, O., Esser, D., Kobelke, J.: Lorenz, A., Schwuchow, A., Rothhardt, M., Schuster, K., Hoffmann, D., Bartelt, H.:
Laser-drilled free-form silica fiber preforms for microstructured optical fibers
Opt. Fiber Technol. 19 (5), 482-485 (2013)

Becker, M., Werner, M., Fitzau, O., Esser, D., Kobelke, J., Schuster, K., Lorenz, A., Schwuchow, A., Rothhardt, M., Hoffmann, D., Bartelt, H.:
Laser processed preforms for microstructured optical fibers
Proc. SPIE 8785, 8785C9 (8 S.) (2013)

Katzy, V., Giesberts, M., Fitzau, O., Hoffmann, D.,:
Single mode all-fiber pulse-pumped Raman amplifier for picosecond pulses
Advanced Solid-State Photonics (ASSP), San Diego, California, Jan. 29th - Feb. 1st, 3 S., 2012

Fitzau, O., Geiger, J., Hoffmann, H.D.:
Experimental and theoretical studies on kW class polarized fiber lasers for cw operation
Proc. SPIE 7195, 719509 (9 S.), 2009

Giesberts, M.; Geiger, J., Traub, M., Hoffmann, H.-D.:
Novel design of a gain-switched diode-pumped fiber laser
Proc. SPIE 7195, 71952P (9 S.), 2009

Geiger, J., Fitzau, O., Zintzen, B., Hoffmann, D.:
Single-mode, highly polarized Y1456b-doped fiber laser with 850 W output power
ASSP 2008, Nara, Japan, Jan 27-30,(3 S.), 2008

Zintzen, B., Emmerich, A., Geiger, J., Hoffmann, D., Loosen, P.:
Effective cooling for high-power fiber lasers
Proc. of the 4th Int. WLT-Conf. on Lasers in Manufacturing , Munich, June 2007
(5 S.), 2007

Zintzen, B., Langer, T., Geiger, J., Hoffmann, D., Loosen, P.:
Heat transport in solid and air-clad fibers for high-power fiber lasers
Opt. Expr. 15, 16787-16793, (6 S.) 2007