Tunable Lasers

Fraunhofer ILT develops tunable lasers with wavelengths from UV to MIR for a wide range of applications from metrology to materials processing. For them, systems with tunable lasers are implemented using broadband amplifying laser media, such as titanium sapphire or alexandrite, as well as optically parametric beam sources or converters.

The institute has already realized solutions for a wide range of specific requirements, such as average powers from a few milliwatts to several tens of watts, time regimes from ultrashort pulses to continuous operation, or spectral properties from ultra-wide spectra to single-frequency operation. Within the scope of current research projects, Fraunhofer ILT is continuously expanding the parameter ranges and fields of application for lasers and optics. Its focus is on demand-driven solutions for implementing new ideas as well as for optimizing existing systems.

In atmospheric research, for example, very robust beam sources are usually required due to the demanding operating conditions, such as on ships, in aircraft or in arctic regions. In laser material processing with adapted wavelengths, frequency-converted lasers of high average power are commonly used, among others. In addition to optimizing established laser designs with wavelengths of around 1 μm and below, the scientists at Fraunhofer ILT are also opening up many technically and economically interesting material classes that exhibit very high absorption.

In the field of quantum technology, Fraunhofer ILT is developing new applications for parametric beam sources and frequency converters – in close cooperation with top international researchers. These range from non-invasive sensor technology to data-secure communication and cryptography to components for quantum computers.

The range of services we offer includes feasibility studies, development or optimization of lasers and frequency converters, system integration, analysis and validation, and comprehensive consulting.

Tunable lasers

• UV to NIR: broadband tunable lasers and frequency converters with nanosecond pulses and narrow spectral linewidths
• MIR: tunable OPOs, OPGs and OPAs

Range of services

• Technology consulting and patent searches
• Simulation and design
• Feasibility studies and characterization of components and beam sources
• Development of demonstrators and prototypes

Elsen, F., Jungbluth, B., Nyga, S., Wüppen, J., Hoffmann, D.:
High-Power Optical Parametric Generation and Amplification of Femtosecond Pulses at 2 Microns -Investigation of Pulse Duration Effects.
Nonlinear Optics 2019, Waikoloa Beach, Hawaii US, 15–19 July 2019. OSA Technical Digest (Optical Society of America, 2019), paper NTu2B.7, (2 S.) (2019)
https://doi.org/10.1364/NLO.2019.NTu2B.7

Elsen, F., Jungbluth, B., Nyga, S., Wüppen, J., Hoffmann, H.-D.:
High-power 2-micron optical-parametric frequency converter with sub-picosecond pulse duration. SPIE LASE 2019, San Francisco, CA, 2-7 February 2019. Solid State Lasers XXVIII: Technology and Devices (Proc. of SPIE), 108960O, (4 S.) (2019)
https://doi.org/10.1117/12.2507014

Höffner, J., Froh, J., Mauer, A., Lübken, F.-J., Strotkamp, M., Munk, A., Jungbluth, B.:
A Novel Diode Pumped Alexandrite Ring Laser for Doppler Lidar.
Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 23 – 27 June 2019, Munich, Germany. Proceedings of Lasers and Electro-Optics Europe & European Quantum Electronics Conference, (1 S.) (2019)
https://doi.org/10.1109/CLEOE-EQEC.2019.8872997

Höffner, J., Strotkamp, M., Munk, A., Jungbluth, B.:
Demonstration of a compact and universal Doppler lidar based on a novel diode pumped alexandrite ring laser.
ICSO 2018, International Conference on Space Optics, 9 - 12 October 2018, Chania, Greece. Proc. of SPIE Vol. 11180, 1118029, (8 S.), (2019)
https://doi.org/10.1117/12.2536000 (Open Access)

Strotkamp, M., Munk, A., Jungbluth, B., Hoffmann, H.-D., Höffner, J.:
Diode-pumped Alexandrite laser instrument for next generation satellite-based Earth observation.
ICSO 2018, International Conference on Space Optics, 9 - 12 October 2018, Chania, Greece. Proc. of SPIE Vol. 11180, 111800F, (14 S.), (2019)
https://doi.org/10.1117/12.2535934 (Open Access)

Strotkamp, M., Munk, A., Jungbluth, B., Hoffmann, H.-D., Höffner, J.:
Diode‑pumped Alexandrite laser for next generation satellite‑based earth observation lidar.
CEAS Space Journal 11, 413-422 (2019)
https://doi.org/10.1007/s12567-019-00253-z (Open Access)

Nyga, S., Blass, D., Katzy,V., Westphalen, T., Jungbluth, B., Hoffmann, H.D.:
Fiber-coupled three-micron pulsed laser source for CFRP laser treatment.
SPIE LASE 2018, 27 Jan.-1 Feb.2018, San Francisco, California. Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 105110G, (7 S.) (2018)
https://doi.org/10.1117/12.2288343

Munk, A., Strotkamp, M., Walochnik, M., Jungbluth, B., Traub, M., Hoffmann, H.-D., Poprawe, R., Höffner, J., Lübken, F.-J.:
Diode-pumped Q-switched Alexandrite laser in single longitudinal mode operation with Watt-level output power.
OPTICS LETTERS 43(22), 5492-5495 (2018)
https://doi.org/10.1364/OL.43.005492 (Open Access)

Munk, A., Jungbluth, B., Strotkamp, M., Hoffmann, H.-D., Poprawe, R., Höffner, J., Lübken, F.-J.:
Diode-pumped Alexandrite ring laser in single-longitudinal mode operation for atmospheric lidar measurements.
OPTICS EXPRESS 26(12), 14928-14935 (2018)
https://doi.org/10.1364/OE.26.014928 (Open Access)

Blass, D., Nyga, S., Jungbluth, B., Hoffmann, H.D., Dilger, K.:
Composite Bonding Pre-Treatment with Laser Radiation of 3 µm Wavelength: Comparison with Conventional Laser Sources.
Materials 11, 1216- (2018)
https://doi.org/10.3390/ma11071216

Blass, D., Nyga, S. Katzy, V., Jungbluth, B., Hoffmann, H.-D., Dilger, K.:
CFRP Bonding pre-Treatment With Laser Radiation of 3 μm Wavelength: Influence of Different Treatment Parameters.
WLT/LiM Lasers in Manufacturing Conf#erence 2017.  Munich, June 26-29 2017. Proceedings of World of Photonics, (8 S.) (2017)

Elsen, F., Livrozet, M., Strotkamp, M., Wüppen, J., Jungbluth, B., Kasemann, R.:
Löhring, J., Meissner, A., Meyer, R., Hoffmann, H.-D.,  Poprawe, R.:
Demonstration of a 100-mJ OPO/ OPA for future lidar applications and laser-induced damage threshold testing of optical components for MERLIN.
Optical Engineering 57 (2) 21205- (4 S.) (2017)

Elsen, F., Livrozet, M., Strotkamp, M., Wüppen, J., Jungbluth, B., Kasemann, R., Löhring, J.: Meissner, A. Meyera, R., Hoffmann, D., Poprawe, R.: Demonstration of a 100mJ OPO/OPA for Future Lidar Applications and LIDT Testing of Optical Components for MERLIN.
Solid State Lasers XXVI: Technology and Devices, San Francisco, California, United States,
27 January - 1 February 2018. Proc. of SPIE Vol. 10082, 100821L (6 S.) (2017)

Jungbluth, B., Elsen, F., Wueppen, J., Nyga, S., Strotkamp, M., Hoffmann,D., Poprawe, R.:
High-power optical parametric frequency converters with addressable wavelengths in the IR.
Solid State Lasers XXVI: Technology and Devices, SPIE LASE, 2017, San Francisco, California, United States.
Proc. of SPIE Vol. 10082, 100820O (6 S.) (2017)

Strotkamp, M., Elsen, F., Löhring, J., Traub, M., Hoffmann, D.:
Two stage Innoslab amplifier for energy scaling from 100 to >500 mJ for future lidar applications
Appl. Opt. 56 (10), 2886-2892 (2017)

Blass, D., Krelinga, S., Nyga, S., Westphalen, T.,Jungbluth, B., Hoffmann, H.-D.,Dilger, K.:
CFRP bonding pre-treatment with laser radiation of 3 μm wavelength: Laser/material interaction.
Laser-based Micro- and Nanoprocessing X, San Francisco, California, United States
13 - 18 February 2016. Proc. of SPIE Vol. 9736, 973614 (2016), (11 S.) (2016)

Carstens, H., Högner, M., Saule, T., Holzberger, S., Lilienfein, N., Guggenmos, A, Jocher, C., Eidam, T., Esser, D., Tosa, V. , Pervak, V., Limpert, J., Tünnermann, A., Kleineberg, U., Krausz, F., Pupeza, I.:
High-harmonic generation at 250  MHz with photon energies exceeding 100  eV.
Optica 3 Nr. 4, 366-369 (2016)

Munk, A., Jungbluth, B., Strotkamp, M., Hoffmann, H.-D., Poprawe, R., Höffner, J.:
Diode-pumped Alexandrite ring laser for LIDAR applications
Proc. SPIE 9726, 97260I (6 S.) (2016)

Wueppen, J., Nyga, S., Jungbluth, B., Hoffmann, D.:
1.95  μm-pumped OP-GaAs optical parametric oscillator with 10.6  μm idler wavelength
Opt. Lett. 41 (18), 4225-4228 (2016)

Jungbluth, B., Elsen, F., Strotkamp, M., Wüppen, J., Hoffmann, D.: 
Gepulste Hochleistungslaser mit adressierbarer Wellenlänge im IR
Photonik Nr 6, 34-37 (2015)

Li, P., Lewin, M., Kretinin, A.V. , Caldwell, J. D., Novoselov, K. S. , Taniguchi, T., Watanabe, K., Gaussmann, F., Taubner, T.:
Hyperbolic phonon-polaritons in boron nitride for near-field optical imaging and focusing
Nature Communications 6, 7507 (9 S.) (2015)

Bensmann, S., Gaußmann, F., Lewin, M., Wüppen, J., Nyga, S., Janzen, C., Jungbluth, B., Taubner, T.:
Near-field imaging and spectroscopy of locally strained GaN using an IR broadband laser
Opt. Expr. 22 (19), 22369-22381 (2014)

Elsen, F., Heinzig, M., Livrozet, M. J.: Löhring, J., Wüppen, J., Büdenbender, C., Fix, A., Jungbluth, B., Hoffmann, H.-D.:
Feasibility and performance study for a space-borne 1645 nm OPO for French-German satellite mission MERLIN
Proc. SPIE 9135, 913515 (7 S.) 1-7 (2014)

Gronloh, B., Russbueldt, P., Jungbluth, B., Hoffmann, H.-D.:
Green sub-ps laser exceeding 400 W of average power
Proc. SPIE 8959, 89590T (10 S.) (2014)

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 S.) (2014)

Riedel, R., Rothardt, J., Beil, K., Gronloh, B., Klenke, A., Höppner, H., Schulz, M., Teubner, U., Kränkel, C., Limpert, J., Tünnermann, A., Prandolini, M.J., Tavella, F.:
Thermal properties of borate crystals for high power optical parametric chirped-pulse amplification
Opt. Expr. 22 (15), 17607-17619 (2014)

Strotkamp, M., Witte, U., Munk, A., Hartung, A., Gausmann, S., Hengesbach, S., Traub, M.:
Broadly tunable, longitudinally diode-pumped Alexandrite laser
Proc. SPIE 8959, 89591G (6 S.) (2014)

Petraviciute-Lötscher, L., Schneider, W., Rußbüldt, P., Gronloh, B., Hoffmann, H.-D., Kling, M. F., Apolonski, A.:
Direct low-harmonic generation in gas at MHz repetition rate
Lasers and Electro-Optics Europe (CLEO EUROPE/IQEC)
Conference on and International Quantum Electronics Conference, Munich 12-16 May 2013 (1 S.) (2013)

Strotkamp, M., Munk, A., Jungbluth, B., Dahlhoff, K., Jansen, P., Broch, S., Gomm, S., Bachner, M., Fuchs, H., Holland, Hofzumahaus, A.:
Design of a rugged 308 nm tunable UV laser for airborne LIF measurements on top of Zeppelin NT
Solid State Lasers XXII, Proc. SPIE 8599, L1-10, (2013)

Gronloh, B., Russbueldt, P., Schneider, W., Jungbluth, B., Hoffmann, H.-D.:
High average power sub-picosecond pulse generation at 515 nm by extracavity frequency doubling of a mode-locked Innoslab MOPA 
Proc. SPIE 8235, (10 S.) (2012)

Jungbluth, B., Nyga, S., Pawlowski, E., Fink, T. Wüppen, J.:
Efficient frequency conversion of pulsed microchip and fiber laser radiation in PPSLT
Proc. SPIE 7912, 79120K, (8 S.) (2011)

Wueppen, J., Jungbluth, B., Taubner, T., Loosen, P.:
Ultrafast tunable mid IR source
36th Ann.l Int. Conf. on Infrared, Millimeter, and Terahertz Waves. Houston, TX, USA, (2 S.) (2011)

Wueppen, J., Jungbluth, B., Taubner, T., Loosen, P.:
Ultrafast Tunable Mid IR Source
IEEE IRMMW-THz Conference, Houston, (2011)

Wueppen, J., Pawlowski, E., Traub, M., Jungbluth, B., Hasler, K.-H., Sumpf, B., Erbert, G.:
Compact module of a frequency-doubled, cw diode laser with an output power of more than 500mW at 531nm and a beam quality of less than 1.3 
Proc. SPIE 7582, 758204, 8 S., (2010)

Gronloh, B., Mans, T., Rußbüldt, P., Jungbluth, B., Wester, R., Hoffmann, D.:
High Power SHG at 515 nm by means of extracavity frequency conversion of sub-picosecond pulses from a mode-locked Innoslab MOPA
Advanced Solid-State Photonics, OSA Technical Digest Series. Optical Society of America, San Diego, Ca., January 31-February 3, 2010. Paper AtuA13, 2 S., (2010)

Nyga, S., Geiger, J., Jungbluth, B.:
Frequency doubling of fiber laser radiation of large spectral bandwidths
Proc. SPIE 7578, 75780P, 7 S., (2010)

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
Proceedings of SPIE 7578, 75780O, (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, OSA Technical Digest Series (CD) (Optical Society of America), paper AMB29, (2010)

Strotkamp, M., Schwarz, T., Jungbluth, B.:
Efficient, green laser based on a blue-diode pumped rare earth doped fluoride crystal in an extreme short resonator
Conference on Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009, Munich,
Mulhouse: European Physical Society 1-1, (2009)

Duering, M., Kolev, V., Luther-Davies, B.:
Generation of tuneable 589nm radiation as a Na guide star source using an optical parametric amplifier
Opt. Expr. 17, 437-446, (2009)

Gronloh, B., Höfer, M., Wester, R., Hoffmann, H.-D.:
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, (2009)

Jungbluth, B., Oberbeckmann, D., Wueppen, J.:
Power-scaling and prototyping of a gain switched Ti:Sapphire laser with a tuning range of 400 nm
Proc. SPIE 7193, 71930, (8 S.) (2009)

Jungbluth, B., Vierkoetter, M., Hoefer, M., Loehring, J., Oberbeckmann, D., Hoffmann, D.:
Design and characterization of a rugged and compact setup for widely tunable harmonic generation in the ultraviolet
Proc. SPIE 6455, (10 S.) (2007)

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

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