Center for Laser Materials - Summary

We explore, qualify and develop innovative laser materials. Our focus is on both basic research and spectroscopic, structural and thermomechanical characterization of known materials as well as their chemical analysis.

Our research aim is the development of laser materials which cover novel wavelength ranges, allow for more efficient high power laser operation or are suitable for the generation of ultrashort fs-pulses. The application of these materials are in medicine, microscopy or materials processing and many other fields. Therefore the Center for Laser Materials is an important bridge between the crystal growth and the laser industry.

Due to the leading position of the Institute for Crystal Growth in the field of growth and characterization on inorganic solid-state crystals in combination with novel growth and manufacturing facilities and systems for laser and optical characterization we are the central contact for laser materials.

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In collaboration with the department Simulation and Characterization the aim of our work is to establish novel laser crystals with improved spectral and/or thermo-mechanical properties for all kinds of applications of solid-state lasers. Furthermore, we precisely analyze the reasons for laser materials showing a performance falling short of the expectations. In addition the Center for Laser Materials provides the characterization of externally supplied crystals and their qualification for laser operation.

For the laser experiments we possess a large variety of mirrors with transmission characteristics suitable for laser transitions from the visible to the mid-infrared spectral range. A wide-band tunable high performance Ti:sapphire laser as well as different semiconductor-based sources are utilized for optical pumping.

In this way, we create a unique research environment allowing to set up laser demonstrators utilizing gain materials and pump sources fabricated on site in Berlin-Adlershof. An initial project in cooperation with the Ferdinand-Braun-Institut, funded by the BMBF, offers the basis for installation of this competence center.

Center for Laser Materials - Methods

  • Characterization of laser in simple resonator geometries and development of innovative laser materials
  • Spectroscopic characterization of rare-earth and transition-metal doped oxide and fluoride crystals regarding their suitability for laser operation
  • Structural and thermomechanical characterization of laser materials and their chemical analysis

Center for Laser Materials - Key Publications

P. W. Metz, D. T. Marzahl, G. Huber, and C. Kränkel
Performance and wavelength tuning of green emitting terbium lasers
Opt. Express 25 (5), 5716-5724 (2017)
doi: 10.1364/OE.25.005716

C. Kränkel, D. T. Marzahl, F. Moglia, G. Huber, and P. W. Metz
Out of the blue: semiconductor laser pumped visible rare-earth doped lasers
Laser Photon. Rev. 10 (4), 548-568 (2016) (invited paper)
doi: 10.1002/lpor.201500290

C. Kränkel
Rare-earth doped sesquioxides for diode-pumped high power lasers in the 1-, 2-, and 3-µm spectral range
IEEE J. Sel. Top. Quant. Electron. 21 (1) 1602013 (2015) (invited paper)
doi: 10.1109/JSTQE.2014.2346618

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