Optics Design

Products and Services Optics Design

Optics Design

  • Imaging and non-imaging optical systems for coherent and incoherent systems
  • Micro optical systems
  • λ from UV to IR and average power up to multi kW
  • Tolerance analysis
  • Design for production and assembly

Opto-mechanical Design

  • FE analysis of opto-mechanical assemblies
  • Calculation and correction of laser-induced thermal lenses
  • Mechanical design of high power optics
  • Fast scanning systems for high power lasers

Tailored Intensity Profiles

  • Beam transformation
  • 1D and 2D homogenization
  • Application-specific optics for pumping, hardening, polymer welding, brazing and cleaning

Assembly of Optical Systems

  • Production measurement technology for optical systems
  • Algorithms and methods for automated alignment and assembly
  • Qualification of optical systems


Bonhoff, T., Gayer, C., Stollenwerk, J., Loosen, P.:
Simulation and measurement of thermo-optical effects in an f-theta lens at high laser power
DGaO-Proc. 117. Tagung, 2 S. (2016)

Büsing, L., Bonhoff, T., Behnke, L., Stollenwerk, J., Loosen, P.:
Theoretical and experimental analysis of scan angle-depending pulse front tilt in optical systems for laser scanners
Adv. Opt. Techn. (online first) (7 S.) (2016)

König, H.-G., Pütsch, O., Stollenwerk, J., Loosen, P.:
An improved approach for process monitoring in laser material processing
Proc. SPIE 9889, 98890T (6 S.) (2016)

Bonhoff, T., Büsing, L., Stollenwerk, J., Loosen, P.:
Modeling of optical aberrations due to thermal deformation using finite element analysis and ray-tracing
Proc. SPIE 9626, 96261V (10 S.) (2015)

Esser, D., Staasmeyer, J.-H., Weitenberg, J., Rußbüldt, T., Sartorius, T., Hoffmann, H.-D.:
Fused-silica mirror substrates with laser-microstructured openings with reduced chipping
CLEO_Europe 2015. 21-25 June 2015 in Munich. CE_10_3. (2015)

Thombansen, U., Gatej, A., Pereira, M.:
Tracking the course of the manufacturing process in selective laser melting
Proc. SPIE 8963, 89630O (7 S.) (2014)

Thombansen, U., Hermanns, T.:
In-situ measurement of the focal position in one and ten micron laser cutting
Proceedings 33rd Int. Congress on Applications of Lasers & Electro-Optics (ICALEO), October 19-23, 2014, San Diego, USA,
Paper 179, ISBN 9781940168029 (4 S.) (2014)

Thombansen, U., Hermanns, T.: Molitor, T., Pereira, M., Schulz, W.:
Measurement of cut front properties in laser cutting
Physics Procedia  56, 885-891 (2014)

Thombansen, U., Hermanns, T., Stoyanov, S.:
Setup and maintenance of manufacturing quality in CO2 laser cutting
Procedia CIRP 20, 98 – 102 (2014)

Thombansen, U., Ungers, M.:
Illumination for process observation in laser material processing
Physics Procedia  56, 1286-1296 (2014)

Thombansen, U., Ungers, M.:
Cognition for robot scanner based remote welding
Proc. SPIE  8963, 89630N (8 S.) (2014)

Pütsch, O., Bahrenberg, L., Loosen, P.:
Opto-mechatronisches System zur Erzeugung prozessangepasster Intensitätsverteilungen für die Lasermaterialbearbeitung
Mechatronik 2013, Aachen, 06.-08.03.2013, VDI, (9 S.)

Pütsch, O., Temmler, A., Stollenwerk, J., Willenborg, E., Loosen, P.:
Active optical system for laser structuring of 3D surfaces remelting
Laser Beam Shaping XIV. Ed.: Andrew Forbes, Todd E. Lizotte. Proc. SPIE 8843, 88430D (8 S.) (2013)

Crump, P., Hengesbach, S., Witte, U., Hoffmann, H.-D., Erbert, G.,
Tränkle, G.:
High-power diode lasers optimized for low-loss smile-insensitive external spectral stabilization
IEEE Photon. Technol. Lett. 24, Nr. 8, 703-705, (2012)

Gatej, A., Wasselowski, J., Loosen, P.:
Thermo-optical (TOP) analysis by coupling FEM and ray tracing
Proceedings of SPIE 8429, E-84290E-84290E-8, (2012)

Gatej, A.,  Wasselowski, J., Loosen, P.:
Using Adaptive Weighted Least Squares Approximation for Coupling Thermal and Optical Simulation
Applied Optics 51/28, 6718–6725 (2012)

Gatej, A.,  Richmann, A., Pütsch, O., Loosen, P.:
Thermo-Optical (TOP) analysis of transmissive elements for laser-systems 
Proceedings of SPIE 8490, (2012)

Pütsch, O., Loosen, P.:
Electro-optically actuated liquid-lens zoom 
Proc. SPIE 8429, 8 S. (2012)

Hengesbach, S., Witte, U., Traub, M., Hoffmann, D.:
Simulation and analysis of volume holographic gratings integrated in collimation optics for wavelength stabilization 
Proc. SPIE 7918, 79180A, 13 S., (2011)

Funck, M., Loosen, P.:
Estimating the performance gain of selectively assembled optical systems
53. Int. Wissenschaftliches Kolloquium, Techn. Univ. Ilmenau. CD-ROM
pp. 160-161, (2008)

Schnitzler, C., Hambuecker, S., Ruebenach, O., Sinhoff, V., Steckman, G., West, L., Wessling, C., Hoffmann, H.-D.:
Wavelength stabilization of HPDL array: fast-axis collimation optic with integrated VHG
Proc. SPIE 6456, 1-7, (2007)

Traub, M., Hoffmann, H.-D., Plum, H.-D., Wieching, K., Loosen, P., Poprawe, R.:
Homogenization of high power diode laser beams for pumping and direct applications
Proceedings of SPIE 6104, 61040Q.1-61040Q.10, (2006)