TRUMPF Scientific Lasers GmbH Co. KG

München, Germany

TRUMPF Scientific Lasers GmbH Co. KG

München, Germany
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Ueffing M.,Ludwig Maximilians University of Munich | Lange R.,Ludwig Maximilians University of Munich | Pleyer T.,Ludwig Maximilians University of Munich | Pervak V.,Ludwig Maximilians University of Munich | And 7 more authors.
Optics Letters | Year: 2016

We present a compact femtosecond nonlinear Yb:YAG thin-disk regenerative amplifier delivering pulses carried at a wavelength of 1030 nm with an average power of >200 W at a repetition rate of 100 kHz and an energy noise value of 0.46% (rms) in a beam with a propagation factor of M2 < 1.4. The amplifier is seeded with bandwidth-limited subpicosecond pulses without temporal stretching. We give estimates for the nonlinear parameters influencing the system and show that chirped mirrors compress the 2 mJ pulses to a near-bandwidth-limited duration of 210 fs. © 2016 Optical Society of America.


De La Cruz L.,University of Geneva | Schubert E.,University of Geneva | Mongin D.,University of Geneva | Klingebiel S.,TRUMPF Scientific Lasers GmbH Co. KG | And 5 more authors.
Applied Physics Letters | Year: 2016

We experimentally demonstrate that the transmission of a 1030 nm, 1.3 ps laser beam of 100 mJ energy through fog increases when its repetition rate increases to the kHz range. Due to the efficient energy deposition by the laser filaments in the air, a shockwave ejects the fog droplets from a substantial volume of the beam, at a moderate energy cost. This process opens prospects for applications requiring the transmission of laser beams through fogs and clouds. © 2016 Author(s).


Schubert E.,University of Geneva | De La Cruz L.,University of Geneva | Mongin D.,University of Geneva | Klingebiel S.,TRUMPF Scientific Lasers GmbH Co. KG | And 5 more authors.
Physical Review A - Atomic, Molecular, and Optical Physics | Year: 2016

We investigate the self-induced turbulence of high-repetition-rate laser filaments over a wide range of average powers (1 mW to 100 W) and its sensitivity to external atmospheric turbulence. Although both externally imposed and self-generated types of turbulence can have comparable magnitudes, they act on different temporal and spatial scales. While the former drives the shot-to-shot motion at the millisecond time scale, the latter acts on the 0.5-s scale. As a consequence, their effects are decoupled, preventing beam stabilization by the thermally induced low-density channel produced by the laser filaments. © 2016 American Physical Society.


Liu X.,Light Technology | Liu X.,Institute of Microstructure Technology IMT | Lebedkin S.,Institute of Nanotechnology INT | Besser H.,Karlsruhe Institute of Technology | And 13 more authors.
ACS Nano | Year: 2015

Organic semiconductor distributed feedback (DFB) lasers are of interest as external or chip-integrated excitation sources in the visible spectral range for miniaturized Raman-on-chip biomolecular detection systems. However, the inherently limited excitation power of such lasers as well as oftentimes low analyte concentrations requires efficient Raman detection schemes. We present an approach using surface-enhanced Raman scattering (SERS) substrates, which has the potential to significantly improve the sensitivity of on-chip Raman detection systems. Instead of lithographically fabricated Au/Ag-coated periodic nanostructures on Si/SiO2 wafers, which can provide large SERS enhancements but are expensive and time-consuming to fabricate, we use low-cost and large-area SERS substrates made via laser-assisted nanoreplication. These substrates comprise gold-coated cyclic olefin copolymer (COC) nanopillar arrays, which show an estimated SERS enhancement factor of up to ∼107. The effect of the nanopillar diameter (60-260 nm) and interpillar spacing (10-190 nm) on the local electromagnetic field enhancement is studied by finite-difference-time-domain (FDTD) modeling. The favorable SERS detection capability of this setup is verified by using rhodamine 6G and adenosine as analytes and an organic semiconductor DFB laser with an emission wavelength of 631.4 nm as the external fiber-coupled excitation source. © 2014 American Chemical Society.


Prinz S.,TRUMPF Scientific Lasers GmbH Co. KG | Prinz S.,TU Munich | Hafner M.,TRUMPF Scientific Lasers GmbH Co. KG | Schultze M.,TRUMPF Scientific Lasers GmbH Co. KG | And 6 more authors.
Optics Express | Year: 2014

Short-pulse-pumped optical parametric chirped pulse amplification (OPCPA) requires a precise temporal overlap of the interacting pulses in the nonlinear crystal to achieve stable performance. We present active synchronization of the ps-pump pulses and the broadband seed pulses used in an OPCPA system with a residual timing jitter below 2 fs. This unprecedented stability was achieved utilizing optical parametric amplification to generate the error signal, requiring less than 4 pJ of seedand 10 μJ of pump-pulse-energy in the optical setup. The synchronization system shows excellent long-term performance and can be easily implemented in almost any OPCPA system. © 2014 Optical Society of America.


Schneider W.,Ludwig Maximilians University of Munich | Schneider W.,Max Planck Institute of Quantum Optics | Ryabov A.,Ludwig Maximilians University of Munich | Ryabov A.,Max Planck Institute of Quantum Optics | And 7 more authors.
Optics Letters | Year: 2014

Yb:YAG thin-disk lasers offer extraordinary output power, but systems delivering femtosecond pulses at a repetition rate of hundreds of kilohertz are scarce, even though this regime is ideal for ultrafast electron diffraction, coincidence imaging, attosecond science, and terahertz (THz) spectroscopy. Here we describe a regenerative Yb:YAG amplifier based on thin-disk technology, producing 800-fs pulses at a repetition rate adjustable between 50 and 400 kHz. The key design elements are a short regenerative cavity and fast-switching Pockels cell. The average output power is 130 Wbefore the compressor and 100 W after compression, which at 300 kHz corresponds to pulse energies of 430 and 330 μJ, respectively. This is sufficient for a wide range of nonlinear conversions and broadening/compression schemes. As a first application, we use optical rectification in LiNbO3 to produce 30-nJ single-cycle THz pulses with 6W pump power. The electric field exceeds 10 kV/cm at acentral frequency of 0.3 THz, suitable for driving structural dynamics or controlling electron beams. © 2014 Optical Society of America.


Prinz S.,TRUMPF Scientific Lasers GmbH Co. KG | Prinz S.,TU Munich | Haefner M.,TRUMPF Scientific Lasers GmbH Co. KG | Teisset C.Y.,TRUMPF Scientific Lasers GmbH Co. KG | And 13 more authors.
Optics Express | Year: 2015

We report on a CEP-stable OPCPA system reaching multi-GW peak powers at 300 kHz repetition rate. It delivers 15 W of average power, over 50 μJ of compressed pulse energy and a pulse duration below 6 fs. By implementing an additional pump-seed-synchronization, the output parameters are stabilized over hours with power fluctuations of less than 1.5%. © 2015 Optical Society of America.


Novak J.,Academy of Sciences of the Czech Republic | Novak J.,Czech Technical University | Bakule P.,Academy of Sciences of the Czech Republic | Green J.T.,Academy of Sciences of the Czech Republic | And 7 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2013

We report on the initial performance of the first ELI-Beamlines high repetition rate, thin disk-based OPCPA pump laser. The laser is designed to produce a pulse train with pulse energies of 10-30 mJ at a 1 kHz repetition rate and is intended to be used as a pump source for an OPCPA amplifier. While the preliminary tests and analysis show that these target energies are well within the capabilities of the equipment available, the output energies of the current design are limited by self-phase modulation. We discuss the sources of this modulation and a new amplifier design to reduce these nonlinear effects. The efficiency of the second harmonic conversion of the thin disk amplifier output is measured to be higher than 65% and scaling to higher energies is discussed. © 2013 SPIE.


Gottwald T.,Trumpf Laser GmbH Co. KG | Stolzenburg C.,Trumpf Laser GmbH Co. KG | Bauer D.,Trumpf Laser GmbH Co. KG | Kleinbauer J.,Trumpf Laser GmbH Co. KG | And 5 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

This paper highlights the latest advances of disk laser technology at Trumpf. The disk laser combines unique properties, especially high output brilliance (at the lowest pump brilliance requirements of any high power platform), power scalability and broad applicability from cw to ps systems. In the new generation of cw disk lasers, 6kW are extracted from one disk in an industrial product at beam qualities suitable for welding. Moreover, scaling laser power to 10 kW per disk and resonators with higher brilliance are discussed. These advances are enabled by a combination of power scaling and increase of optical-to-optical efficiency. In addition, applications of the disk laser principle to pulsed operation, from ns to ps duration, at infrared and green wavelengths are discussed. Finally, an outlook on the capabilities of disk lasers towards highest cw power and ultra-high peak powers of petawatts and beyond is given. © 2012 SPIE.


Houard A.,ENSTA ParisTech | Jukna V.,ENSTA ParisTech | Point G.,ENSTA ParisTech | Andre Y.-B.,ENSTA ParisTech | And 5 more authors.
Optics Express | Year: 2016

We study the propagation of intense, high repetition rate laser pulses of picosecond duration at 1.03 μm central wavelength through air. Evidence of filamentation is obtained from measurements of the beam profile as a function of distance, from photoemission imaging and from spatially resolved sonometric recordings. Good agreement is found with numerical simulations. Simulations reveal an important self shortening of the pulse duration, suggesting that laser pulses with few optical cycles could be obtained via double filamentation. An important lowering of the voltage required to induce guided electric discharges between charged electrodes is measured at high laser pulse repetition rate. © 2016 Optical Society of America.

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